Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dr. Ezra Hazan is a board certified dermatologist and fellowship trained Mohs surgeon. He graduated with honors from Jefferson Medical College in Philadelphia, PA. Dr. Hazan went on to do an internship in internal medicine at Maimonides Medical Center in Brooklyn, NY. He then completed his dermatology residency at Thomas Jefferson University Hospital and fellowship in Mohs micrographic surgery and cosmetic dermatology at Mount Sinai Hospital. There he gained extensive knowledge and experience in procedural dermatology, including surgery of the skin as well as advanced cosmetic procedures like injectables, lasers and light based technologies.
Dr. Hazan is on staff at Mount Sinai Hospital, where he helps train dermatology residents, and at Penn Medicine Princeton Medical Center. He has published many academic journal articles and authored multiple textbook chapters on various topics in the field of dermatology. Dr. Hazan is a member of the American Academy of Dermatology, American Society for Dermatologic Surgery and American College of Mohs Surgery. He is passionate about the management and treatment of skin cancers, as well as cosmetic treatments and general dermatologic conditions. He strives to provide personalized quality care to all of his patients.
Board-Certified Dermatologist | Upper East Side, NYC
Dr. Sydney Liang, MD, is a board-certified dermatologist and Fellow of the American Academy of Dermatology. She specializes in medical, cosmetic, and surgical dermatology, delivering compassionate, high-quality, and patient-centered care to patients in Manhattan’s Upper East Side and throughout New York City.
Dr. Liang combines academic excellence, surgical precision, and aesthetic artistry to help patients achieve healthy skin and natural-looking cosmetic results.
Dr. Liang’s academic background reflects exceptional achievement and dedication to excellence.
She completed her undergraduate degrees in cell biology, genetics, and human development at the University of Maryland, graduating summa cum laude and earning early acceptance to the Phi Beta Kappa Honor Society as a junior.
She earned her medical degree from the New York University School of Medicine, where she was elected to the prestigious Alpha Omega Alpha Medical Honor Society and graduated at the top of her class.
Dr. Liang completed her dermatology residency at the NYU Langone Health, within the Ronald O. Perelman Department of Dermatology. During residency, she received multiple awards for academic excellence, leadership, and research, culminating in the Morris Leider MD Award for “Best All-Around Resident.”
Her commitment to ongoing education ensures patients receive the most current, cutting-edge, and evidence-based dermatologic treatments available.
Dermatologic Expertise & Special Interests
Dr. Liang provides comprehensive care for conditions of the skin, hair, and nails, with particular expertise in:
Skin Cancer Prevention & Surgical Management
Skin cancer screenings
Early detection and prevention
Surgical treatment of skin cancers
Precision excisions
Medical Dermatology
Acne and acne scarring
Rosacea
Psoriasis
Complex inflammatory skin disorders
Cosmetic Dermatology
Cosmetic injectables (neuromodulators and fillers)
Laser treatments
Skin resurfacing procedures
Personalized aesthetic treatment planning
Her approach emphasizes safety, evidence-based medicine, and treatments tailored to each patient’s unique goals and skin type.
Academic Leadership & Research
In addition to treating patients at SINY®, Dr. Liang teaches future dermatologists at New York University School of Medicine. She has presented at numerous regional and national dermatology conferences and has authored scholarly publications in leading dermatology journals.
Her dedication to advancing dermatologic science reinforces her commitment to delivering exceptional patient care.
Patient Experience & Satisfaction
Dr. Liang places patients at the forefront of every visit. Known for her empathetic demeanor and exceptional communication skills, she creates a comfortable environment where patients feel heard and respected.
Practice Location
Upper East Side
69 E 76th St, New York, NY 10021 Phone: 800-778-3090
Hours:
Mon: 9:00 AM – 5:00 PM
Tue-Thu: 9:00 AM – 8:00 PM
ri: 8:00 AM – 4:00 PM
Sat-Sun: Closed
Serving patients from: Upper East Side, Lenox Hill, Carnegie Hill, Yorkville, Midtown East, Roosevelt Island, Upper West Side, East Harlem, and surrounding Manhattan communities.
Accepted Insurance Plans
Dr. Liang participates with many major insurance plans, including:
Aetna
Blue Cross Blue Shield (including Empire BCBS)
Cigna
EmblemHealth
HealthFirst (NY)
UnitedHealthcare
Oscar Health
Medicare
1199SEIU
Multiplan PHCS
Fidelis Care
For specific plan verification, patients are encouraged to contact the office directly.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York. SINY Dermatology physicians combine academic excellence, clinical research, and patient-focused care to deliver advanced skin treatments tailored to each individual.
Board-Certified Dermatologist | Acne, Hair Loss & Medical Dermatology Specialist
Dr. Peter Saitta is a highly regarded board-certified dermatologist at the Skin Institute of New York (SINY Dermatology), known nationally and internationally for his expertise in acne, hair loss, contact dermatitis, and complex medical dermatology. He treats both adult and pediatric patients, combining advanced clinical research experience with compassionate, patient-centered care.
Dr. Saitta’s academic background and leadership training distinguish him as a leader in modern dermatology:
Bachelor of Arts – New York University (NYU)
Doctor of Osteopathic Medicine – University of Medicine and Dentistry of New Jersey
Dermatology Residency (Chief Resident) – Affiliated with Michigan State University
Recipient of national awards for leadership and academic excellence
During his residency, Dr. Saitta trained under a world-recognized authority in acne, where he also served as Clinical Research Director on multiple acne treatment studies. His work contributed to the development and refinement of some of the most advanced acne therapies available today—innovations he now brings directly to his patients at SINY Dermatology.
Clinical Expertise & Special Interests
Dr. Saitta provides comprehensive medical dermatology care with particular focus on:
Acne treatment (teen and adult acne, hormonal acne, treatment-resistant acne)
Hair loss and scalp disorders
Contact dermatitis and complex rashes
Hand, face, and scalp rashes
Skin cancer screening, diagnosis, and treatment
Pediatric dermatology
Research, Publications & National Leadership
Dr. Saitta is deeply involved in advancing the field of dermatology through research, education, and professional leadership:
Member, American Osteopathic College of Dermatology
National committee member, Dermatology Resident In-Service Examination
Recognized author and subject-matter leader in contact dermatitis in the Yearbook of Dermatology
International lecturer on acne, hair loss, and the psychological effects of skin disease
Author of numerous peer-reviewed publications, many widely available online
He is also joining the Dermatology Residency Program at St. Barnabas Hospital in New York, where he will help train the next generation of dermatologists.
Patient Experience & Satisfaction
Patients frequently highlight Dr. Saitta’s thorough approach, clear communication, and ability to treat complex or long-standing skin concerns with leading-edge yet practical solutions.
Convenient Locations in New York
Dr. Saitta sees patients at multiple SINY Dermatology locations across Brooklyn and Long Island, providing convenient access to expert dermatologic care for surrounding neighborhoods and communities. Patients can easily request an appointment with Dr. Peter Saitta online using the location scheduling links below.
Bay Ridge, Brooklyn
7901 4th Ave, Brooklyn, NY 11209 Phone: 800-778-3090
Hours:
Mon-Thu: 9:00 AM – 8:00 PM
Fri: 9:00 AM – 6:30 PM
Sat: 9:00 AM – 3:00 PM
Sun: 9:00 AM – 2:00 PM
Serving patients from: Bay Ridge, Dyker Heights, Bensonhurst, Sunset Park, Fort Hamilton, Staten Island, and surrounding South Brooklyn communities.
76 7th Ave, Brooklyn, NY 11217 Phone: 800-778-3090
Hours:
Mon-Tue: 9:00 AM – 8:00 PM
Wed-Thu: 8:00 AM – 8:00 PM
Fri: 9:00 AM – 7:00 PM
Sat: 9:00 AM – 5:00 PM
Sun: 10:00 AM – 3:00 PM
Serving patients from: Park Slope, Prospect Heights, Gowanus, Boerum Hill, Carroll Gardens, Cobble Hill, Downtown Brooklyn, and surrounding neighborhoods.
Dr. Saitta accepts a wide range of major insurance plans, including:
Aetna
Anthem Blue Cross Blue Shield / Empire Blue Cross Blue Shield
Blue Cross Blue Shield (including Federal Employee Program)
Cigna & Cigna-HealthSpring
UnitedHealthcare & Oxford
EmblemHealth (GHI)
Healthfirst (NY)
Medicare
Humana
Fidelis Care (NY)
Oscar Health
MetroPlus Health Plan
1199SEIU
Additional plans accepted. Please contact SINY Dermatology to confirm coverage prior to your visit.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York. SINY Dermatology physicians combine academic excellence, clinical research, and patient-focused care to deliver advanced skin treatments tailored to each individual.
Dr. Regina Zambrano DiFiore is a board-certified dermatologist at the Skin Institute of New York (SINY®), providing comprehensive dermatologic care at the Massapequa, Long Island location. Born and raised on the South Shore of Long Island, Dr. Zambrano DiFiore is proud to serve the community she calls home, caring for patients of all ages with a compassionate, highly personalized approach.
She is trained in medical, pediatric, and cosmetic dermatology, with advanced experience treating all skin types. Patients appreciate her thorough evaluations, clear communication, and commitment to developing treatment plans that align with each individual’s needs and goals.
Dr. Zambrano DiFiore’s academic excellence and leadership background reflect her dedication to high-quality, evidence-based dermatologic care:
Bachelor of Science in Biology (Honors) – Stony Brook University Specialization: Developmental Genetics
Doctor of Osteopathic Medicine (DO) – Nova Southeastern University, Fort Lauderdale, FL
Master of Public Health (MPH) – Nova Southeastern University
Internship & Dermatology Residency – St. John’s Episcopal Hospital Chief Resident, Final Year
Her dual medical and public health training allows Dr. Zambrano DiFiore to approach dermatology with a broad, patient-centered perspective that emphasizes both treatment and long-term skin health.
Clinical Expertise & Special Interests
Dr. Zambrano DiFiore provides comprehensive care for conditions affecting the skin, hair, and nails, including both common and complex dermatologic concerns. Her areas of focus include:
Medical dermatology for acute and chronic skin conditions
Pediatric dermatology
Skin cancer screening and early detection
Hair and scalp disorders
Nail conditions
Cosmetic dermatology, including:
Neurotoxins (Botox® and similar treatments)
Dermal fillers
With a thoughtful, minimalistic approach to aesthetics, she focuses on enhancing her patients’ natural beauty—creating treatment plans that are subtle, balanced, and tailored to individual goals. Her philosophy centers on helping patients look refreshed, confident, and like the best version of themselves.
Patient-Centered Philosophy
Dr. Zambrano DiFiore is deeply committed to building long-term relationships with her patients. She strives to create an approachable, supportive environment where patients feel heard, respected, and actively involved in their care.
She is passionate about patient education, empowering individuals to understand their conditions and treatment options so they can confidently participate in their dermatologic journey. Dr. Zambrano DiFiore remains actively engaged with the latest advancements in dermatology to ensure her patients receive safe, effective, and innovative care.
Patient Experience & Satisfaction
Patients consistently describe Dr. Zambrano DiFiore as attentive, knowledgeable, and genuinely caring. Many highlight her ability to listen closely, explain treatment options clearly, and follow up personally to ensure optimal outcomes.
Convenient Location in Long Island
Dr. Zambrano DiFiore sees patients at the SINY Dermatology Massapequa office, serving families and individuals throughout the South Shore of Long Island.
Massapequa, Long Island
83A Grand Ave, Massapequa, NY 11758 Phone: 800-778-3090
Hours:
Mon, Thu & Fri: 9:00 AM – 5:00 PM
Tue: 12:00 PM – 8:00 PM
Wed: Closed
Sat: By appointment
Sun: Closed
Serving patients from: Massapequa, Massapequa Park, Seaford, Wantagh, Bellmore, Amityville, Farmingdale, and surrounding Long Island communities.
Dr. Zambrano DiFiore accepts many major insurance plans commonly used throughout Long Island and New York, including:
Aetna
Anthem Blue Cross Blue Shield / Empire Blue Cross Blue Shield
Blue Cross Blue Shield
Cigna & Cigna-HealthSpring
UnitedHealthcare & Oxford
EmblemHealth (GHI)
Healthfirst (NY)
Medicare
Humana
Fidelis Care (NY)
AvMed
1199SEIU
Multiplan PHCS
Additional plans may be accepted. Please contact SINY Dermatology to confirm coverage prior to your visit.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York (SINY®) is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York. SINY Dermatology physicians combine academic excellence, advanced clinical training, and patient-focused care to deliver high-quality, individualized treatment for every patient.
Dr. Costner McKenzie is a board-certified dermatologist at the Skin Institute of New York (SINY®), providing comprehensive dermatologic care to adult and pediatric patients in Manhattan. With expertise in both medical and cosmetic dermatology, Dr. McKenzie combines academic excellence, research leadership, and compassionate patient care to deliver individualized, evidence-based treatment plans.
Dr. McKenzie’s academic and clinical training reflect a deep commitment to excellence:
Bachelor’s Degree in Human Biology – Stanford University
Doctor of Medicine (MD) – Northwestern University Feinberg School of Medicine
Inducted into the prestigious Alpha Omega Alpha Honor Medical Society
Dermatology Residency (Chief Resident) – New York University
At Northwestern, Dr. McKenzie’s academic performance and dedication to medicine earned him membership in Alpha Omega Alpha, recognizing exceptional academic achievement and professionalism. During residency at NYU, he refined his diagnostic, surgical, and cosmetic skills under nationally recognized leaders in dermatology and served as Chief Resident in his final year.
Clinical Expertise & Special Interests
Dr. McKenzie provides comprehensive dermatologic care with special focus on:
Eczema and inflammatory skin disorders
Acne and acne scarring
Hair loss and scalp conditions
Skin cancer screening and prevention
Cosmetic dermatology and injectables
Pediatric dermatology
His clinical and research interests also include health disparities in dermatology, reflecting his commitment to equitable and inclusive skin care for patients of all backgrounds
Dr. McKenzie is known for combining scientific rigor with a highly personalized approach, ensuring each patient feels heard, supported, and confident in their treatment plan.
Research, Publications & Academic Leadership
Dr. McKenzie is a well-published author with research featured in respected dermatology journals. He has presented his work at national and international meetings, contributing to advancements in the understanding and treatment of eczema, acne, hair loss, and dermatologic health disparities
He remains actively involved in medical education and is committed to mentoring and training future dermatologists.
Active Member, American Academy of Dermatology
Contributor to peer-reviewed dermatology literature
National and international presenter
Patient Experience & Satisfaction
Patients consistently describe Dr. McKenzie as personable, knowledgeable, and exceptionally attentive. Many highlight his outstanding bedside manner, noting that they never feel rushed and always feel fully heard. He is frequently praised for clearly explaining diagnoses and treatment options, providing structured care plans, and ensuring patients leave feeling confident and informed.
Patients also commend the professionalism and friendliness of the SINY team, efficient scheduling, and welcoming office environment
Patient Experience & Satisfaction
Patients consistently describe Dr. McKenzie as personable, knowledgeable, and exceptionally attentive. Many highlight his outstanding bedside manner, noting that they never feel rushed and always feel fully heard. He is frequently praised for clearly explaining diagnoses and treatment options, providing structured care plans, and ensuring patients leave feeling confident and informed.
Patients also commend the professionalism and friendliness of the SINY team, efficient scheduling, and welcoming office environment.
Convenient Locations in New York
Dr. McKenzie sees patients at two SINY Dermatology locations in Manhattan, offering convenient access to expert dermatologic care.
Upper East Side
69 E 76th St, New York, NY 10021 Phone: 800-778-3090
Hours:
Mon: 9:00 AM – 5:00 PM
Tue-Thu: 9:00 AM – 8:00 PM
ri: 8:00 AM – 4:00 PM
Sat-Sun: Closed
Serving patients from: Upper East Side, Lenox Hill, Carnegie Hill, Yorkville, Midtown East, Roosevelt Island, Upper West Side, East Harlem, and surrounding Manhattan communities.
1000 Park Ave, New York, NY 10028 Phone:800-778-3090
Hours:
on-Tue: 9:00 AM – 5:00 PM
Wed: 12:00 PM – 8:00 PM
Thu: 9:00 AM – 5:00 PM
Fri: Closed
Sat: 10:00 AM – 3:00 PM
Sun: Closed
Serving patients from: Upper East Side, Carnegie Hill, Lenox Hill, Yorkville, Midtown East, Central Park East, and surrounding Manhattan neighborhoods.
Dr. McKenzie accepts a wide range of major insurance plans, including:
Aetna
Anthem Blue Cross Blue Shield / Empire Blue Cross Blue Shield
Blue Cross Blue Shield (including Federal Employee Program)
Cigna & Cigna-HealthSpring
UnitedHealthcare & Oxford
EmblemHealth (GHI)
Healthfirst (NY)
Medicare
Fidelis Care (NY)
Humana
Oscar Health
MetroPlus Health Plan
MagnaCare
1199SEIU
Additional plans accepted. Patients are encouraged to contact SINY Dermatology to confirm coverage prior to their visit.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York. SINY Dermatology physicians combine academic excellence, clinical research, and patient-focused care to deliver advanced skin treatments tailored to each individual.
Founder of SINY Dermatology | Board-Certified Dermatologist | Clinical Professor of Dermatology
Dr. Ronald R. Brancaccio is the founder of the Skin Institute of New York (SINY®), a leading dermatology group serving New York City and Long Island since 1979. A board-certified dermatologist with decades of clinical experience, Dr. Brancaccio diagnoses and treats a wide range of dermatologic conditions affecting the skin, hair, and nails.
Throughout his career, he has combined patient care with academic leadership, dermatology research, and physician education. In addition to treating patients at SINY Dermatology offices in Manhattan and Brooklyn, he serves as a clinical professor at New York University School of Medicine, where he helps train future dermatologists.
Known for his depth of expertise, thoughtful diagnostic approach, and commitment to patient-centered care, Dr. Brancaccio has built a reputation as one of New York’s most respected dermatologists.
Dr. Brancaccio’s medical training laid the foundation for a long and distinguished career in dermatology.
Doctor of Medicine (MD) – George Washington University School of Medicine
Medical Internship – Lenox Hill Hospital, New York City
Dermatology Residency – Oregon Health & Science University (formerly University of Oregon Health Sciences Center)
Following his residency training, Dr. Brancaccio returned to New York where he later founded SINY Dermatology in 1979.
Founder of the Skin Institute of New York
Dr. Brancaccio established the Skin Institute of New York (SINY®) with the vision of creating a dermatology practice that combined clinical excellence, academic expertise, and compassionate patient care.
Since its founding, SINY has grown into one of the region’s most respected dermatology groups, providing medical, surgical, and cosmetic dermatology services throughout New York City and Long Island.
His leadership and mentorship have helped shape the careers of many dermatologists and physician assistants who practice at SINY today.
Clinical Expertise
Dr. Brancaccio treats a broad spectrum of dermatologic conditions and has particular expertise in the diagnosis and treatment of skin allergies and complex dermatologic disorders.
Areas of focus include:
Skin cancer screenings and lesion evaluation
Contact dermatitis and skin allergies
Acne and inflammatory skin conditions
Eczema and psoriasis
General medical dermatology
Preventative skin care and long-term skin health management
His decades of experience and academic involvement allow him to provide patients with evidence-based care informed by the latest dermatology research and clinical guidelines.
Academic Leadership & Research
Dr. Brancaccio has remained actively involved in dermatology education and research throughout his career.
He currently serves as a Clinical Professor at New York University School of Medicine, where he teaches dermatology residents and contributes to medical education.
In addition to his clinical work, Dr. Brancaccio:
Has authored more than 40 scholarly publications, many focusing on skin allergies and contact dermatitis
Lectures nationally and internationally on dermatology-related topics
Contributes to dermatology education and professional development within the specialty
Professional Leadership & Memberships
Dr. Brancaccio has served in numerous leadership roles within dermatology organizations.
He currently serves on the Board of Directors of the American Contact Dermatitis Society and the New York State Society of Dermatology and Dermatologic Surgery.
He has also served as president of several professional organizations, including:
New York Dermatologic Society
Bay Ridge Medical Society
Dermatologic Society of Greater New York
Dr. Brancaccio maintains active memberships in these organizations as well as the:
American Academy of Dermatology
Dermatology Foundation (Annenberg Circle Committee)
He is also an honorary member of both the Brazilian Society of Dermatology and the Canadian Dermatology Association.
Awards & Recognition
Dr. Brancaccio has received numerous professional honors throughout his career recognizing his contributions to dermatology and patient care.
Highlights include:
Multiple appearances on **New York Magazine Best Doctors list
2014 Practitioner of the Year – Dermatology Foundation
These recognitions reflect his longstanding leadership and impact within the dermatology community.
Patient Experience & Satisfaction
Many patients have trusted Dr. Brancaccio with their dermatologic care for decades. Reviews frequently highlight his deep expertise, professionalism, and reassuring bedside manner. Patients often note the confidence they feel knowing their care is guided by one of New York’s most experienced dermatologists.
Convenient Locations in New York
Dr. Brancaccio sees patients at SINY Dermatology offices in Brooklyn and Manhattan.
Bay Ridge
7901 4th Ave Brooklyn, NY 11209 Phone: 800-778-3090
Hours:
Mon–Thu: 9:00 AM – 8:00 PM
Fri: 9:00 AM – 6:30 PM
Sat: 9:00 AM – 3:00 PM
Sun: 9:00 AM – 2:00 PM
Serving patients from: Bay Ridge, Dyker Heights, Bensonhurst, Sunset Park, Fort Hamilton, Staten Island, and surrounding South Brooklyn communities.
67 Perry Street New York, NY 10014 Phone: 800-778-3090
Hours:
Mon: 9:00 AM – 5:00 PM
Tue: 8:00 AM – 4:00 PM
Wed–Fri: 9:00 AM – 5:00 PM
Sat–Sun: Closed
Serving patients from: West Village, Greenwich Village, Chelsea, SoHo, Tribeca, Lower Manhattan, Meatpacking District, Union Square, and surrounding Manhattan neighborhoods.
Dr. Brancaccio accepts many widely used insurance plans across New York, including:
Aetna
Anthem Blue Cross Blue Shield / Empire Blue Cross Blue Shield
Blue Cross Blue Shield
Cigna
UnitedHealthcare & Oxford
EmblemHealth (GHI / HIP)
Healthfirst (NY)
Medicare
Fidelis Care (NY)
Humana
Multiplan PHCS
Oscar Health
Surest Health Plans
1199SEIU
Patients are encouraged to confirm coverage with the office prior to scheduling.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York (SINY®) is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York City and Long Island. SINY physicians combine advanced clinical training, academic excellence, and patient-centered care to deliver individualized, evidence-based treatment for every patient.
Board-Certified Dermatologist | Medical & Cosmetic Dermatology
Lisa M. Gruson is a board-certified dermatologist at the Skin Institute of New York (SINY®), where she specializes in medical dermatology, cosmetic dermatology, and advanced laser procedures. She treats adult patients across multiple SINY® locations in New York City and Brooklyn.
Dr. Gruson is known for her thorough approach, clear communication, and patient-focused care, helping patients achieve healthier skin through personalized treatment plans. She has particular expertise in skin allergies and contact dermatitis, along with the diagnosis and management of a wide range of skin conditions.
Patients appreciate her ability to explain treatment options clearly and take the time to answer questions, ensuring every patient feels confident in their care.
Dr. Gruson completed her undergraduate studies at the University of Michigan in Ann Arbor, graduating with Phi Beta Kappa honors.
She went on to earn her medical degree from the NYU Grossman School of Medicine, where she received the prestigious Marion B. Sulzberger Dermatology Award and was inducted into the Alpha Omega Alpha Honor Medical Society.
Dr. Gruson completed her dermatology residency at NYU Medical Center, serving as Chief Resident and receiving the Morris Leider Award for Excellence in Dermatology.
Academic & Professional Leadership
In addition to her clinical work, Dr. Gruson is a Clinical Assistant Professor of Dermatology at NYU School of Medicine, where she teaches dermatology residents and mentors medical students considering careers in dermatology.
She is a Fellow of the American Academy of Dermatology and an active member of several professional organizations, including:
New York State Medical Society
American Contact Dermatitis Society
Dermatologic Society of Greater New York
Dr. Gruson has also conducted dermatology research and published scholarly articles, particularly focused on skin allergies and contact dermatitis, and has presented her work at national dermatology conferences.
Clinical Expertise
Dr. Gruson provides comprehensive dermatology care, including:
Medical Dermatology
Acne and acne scarring
Eczema and dermatitis
Psoriasis
Skin allergy testing and treatment
Skin infections
Skin cancer screenings and evaluation of suspicious moles
Cosmetic Dermatology
Laser skin treatments
Skin rejuvenation procedures
Treatment for sun damage and pigmentation concerns
Patient Experience & Satisfaction
Patients consistently praise Lisa M. Gruson for her thorough, attentive approach and clear communication. Many patients note that she takes the time to carefully listen to their concerns, explain diagnoses and treatment options, and ensure they feel comfortable and informed throughout their visit. Her ability to balance efficiency with a thoughtful bedside manner helps patients feel well cared for while keeping appointments running smoothly.
Convenient Locations in New York
Dr. Gruson sees patients at multiple Skin Institute of New York offices.
Bay Ridge, Brooklyn
7901 4th Ave, Brooklyn, NY 11209 Phone: 800-778-3090
Hours:
Mon-Thu: 9:00 AM – 8:00 PM
Fri: 9:00 AM – 6:30 PM
Sat: 9:00 AM – 3:00 PM
Sun: 9:00 AM – 2:00 PM
Serving patients from: Bay Ridge, Dyker Heights, Bensonhurst, Sunset Park, Fort Hamilton, Staten Island, and surrounding South Brooklyn communities.
Serving patients from: Upper East Side, Lenox Hill, Carnegie Hill, Yorkville, Midtown East, Roosevelt Island, Upper West Side, East Harlem, and surrounding Manhattan communities.
Dr. Gruson accepts many major insurance providers, including:
Aetna
Anthem Blue Cross Blue Shield
Blue Cross Blue Shield
Cigna
EmblemHealth
Empire Blue Cross Blue Shield
HealthFirst (NY)
UnitedHealthcare
UnitedHealthcare Oxford
Fidelis Care (NY)
Humana
Medicare
Multiplan PHCS
1199SEIU
Patients should contact the office to confirm coverage for their specific plan.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York (SINY®) is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York City and Long Island. SINY physicians combine advanced clinical training, academic excellence, and patient-centered care to deliver individualized, evidence-based treatment for every patient.
Dr. Aurash Bina is a board-certified dermatologist at the Skin Institute of New York (SINY®) specializing in medical dermatology, skin cancer screening and prevention, and cosmetic dermatology. Known for his attentive bedside manner and thorough diagnostic approach, Dr. Bina is dedicated to delivering high-quality, patient-centered dermatologic care.
Dr. Bina believes that effective dermatology care begins with listening. He prioritizes patient education and personalized treatment plans, helping individuals understand their skin conditions and empowering them to make informed decisions about their care.
In addition to treating a wide range of medical dermatology conditions, Dr. Bina also provides cosmetic dermatology treatments designed to enhance skin health, appearance, and patient confidence.
Dr. Bina’s training reflects a strong foundation in dermatology and patient-centered clinical care.
Bachelor of Science – University of Texas at Austin
Doctor of Osteopathic Medicine (DO) – Touro University California College of Osteopathic Medicine
Medical Internship – St. John's Episcopal Hospital, Queens, New York
Dermatology Residency – St. John's Episcopal Hospital
During residency, Dr. Bina’s clinical excellence and leadership led to his appointment as Chief Dermatology Resident, where he gained extensive experience diagnosing and managing a wide range of skin conditions.
Dermatology Expertise
Dr. Bina treats patients with a wide variety of dermatologic concerns affecting the skin, hair, and nails.
His clinical interests include:
Skin cancer screening and prevention
Acne and inflammatory skin conditions
Eczema and psoriasis
Rosacea and chronic skin irritation
Skin infections and rashes
Hair and scalp disorders
Preventative skin care and long-term skin health
Dr. Bina’s comprehensive approach focuses not only on treating current symptoms but also on preventing future skin concerns and maintaining long-term skin health.
Cosmetic Dermatology
In addition to medical dermatology, Dr. Bina offers advanced cosmetic dermatology treatments to help patients look and feel their best.
Services may include:
Injectable treatments such as Botox® and dermal fillers
Laser skin treatments
Skin rejuvenation procedures
Treatment for sun damage and uneven skin tone
By combining aesthetic treatments with medical dermatology expertise, Dr. Bina helps patients achieve both healthy and confident skin.
Commitment to Dermatology Advancement
Dr. Bina remains committed to staying current with the latest dermatology research, technologies, and treatment methods.
He regularly participates in continuing education and contributes to the dermatology community through clinical presentations and collaborative research efforts, helping advance the understanding of dermatologic care and treatment.
Patient Experience & Satisfaction
Patients consistently describe Dr. Bina as attentive, compassionate, and thorough. He takes the time to understand each patient’s concerns and explain treatment options clearly. Dr. Bina believes that building trust and open communication with patients is essential to successful dermatologic care.
Convenient Dermatology Locations in Brooklyn
Dr. Bina sees patients at two SINY Dermatology offices in Brooklyn.
Bay Ridge
7901 4th Ave Brooklyn, NY 11209 Phone: 800-778-3090
Hours:
Mon–Thu: 9:00 AM – 8:00 PM
Fri: 9:00 AM – 6:30 PM
Sat: 9:00 AM – 3:00 PM
Sun: 9:00 AM – 2:00 PM
Serving patients from: Bay Ridge, Dyker Heights, Bensonhurst, Sunset Park, Fort Hamilton, Staten Island, and surrounding South Brooklyn communities.
Dr. Bina accepts many widely used insurance plans across New York, including:
Aetna
Anthem Blue Cross Blue Shield / Empire Blue Cross Blue Shield
Blue Cross Blue Shield
Cigna
UnitedHealthcare and Oxford
EmblemHealth (GHI / HIP)
Healthfirst (NY)
Medicare
Fidelis Care (NY)
MetroPlus Health Plan
MagnaCare
1199SEIU
Patients are encouraged to confirm coverage with the office prior to their appointment.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York (SINY®) is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York City and Long Island. SINY physicians combine advanced clinical training, academic excellence, and patient-centered care to deliver individualized, evidence-based treatment for every patient.
Dr. Vignesh Ramachandran is a board-certified dermatologist at the Skin Institute of New York (SINY®), providing comprehensive dermatologic care for adults and children across Brooklyn and Queens. He treats a wide spectrum of conditions affecting the skin, hair, and nails, combining advanced academic training with compassionate, patient-centered care.
Originally immigrating with his family as a child to a small town in Ontario, Canada, Dr. Ramachandran developed a strong appreciation for hard work, humility, and community. He brings those small-town values to every patient interaction—merging clinical excellence with empathy, honesty, and careful listening.
Patients frequently note his thoughtful bedside manner, clear explanations, and commitment to helping them understand both their diagnosis and treatment options.
Dr. Ramachandran’s academic path reflects exceptional achievement at every stage of his training.
Presidential Scholar – Dean’s Scholars Honors Program, University of Texas at Austin
Doctor of Medicine (MD) – Baylor College of Medicine (graduated #1 in his class)
Inducted into the Alpha Omega Alpha Honor Medical Society and Gold Humanism Honor Society
Internal Medicine Internship – Texas Health Presbyterian Hospital Dallas Awarded Outstanding Intern of the Year
Dermatology Residency – Ronald O. Perelman Department of Dermatology at New York University
During residency, Dr. Ramachandran became nationally recognized as a three-time “Rising Derm Star.” He also participated in multiple dermatology clinical trials, published more than 100 peer-reviewed research papers, and contributed to national dermatology committees.
He concluded residency by receiving the Irwin M. Freedberg, M.D. Award, recognizing the resident who contributed the most to advancing dermatology within the broader “House of Medicine.”
Clinical Expertise
Dr. Ramachandran provides full-spectrum dermatologic care for adults and children, including medical, surgical, and cosmetic dermatology.
Common conditions and treatments include:
Acne and acne scarring
Eczema and psoriasis
Hair loss and scalp disorders
Skin cancer screenings and lesion evaluation
Rosacea and inflammatory skin conditions
Pediatric dermatology
Nail disorders
Cosmetic dermatology and skin rejuvenation
Preventative skin care and long-term skin health management
His clinical approach focuses on thorough diagnosis, personalized treatment planning, and clear communication, ensuring patients feel confident and informed throughout their care.
Academic Dermatology & Teaching
In addition to his clinical work at SINY Dermatology, Dr. Ramachandran remains actively involved in academic medicine.
He serves as a Clinical Instructor in the Ronald O. Perelman Department of Dermatology at New York University, where he:
Teaches dermatology residents
Conducts hospital consultations
Participates in dermatology education and clinical training
He also provides inpatient consultations at NYU Langone Hospital—Brooklyn, helping manage complex dermatologic conditions in hospitalized patients.
This ongoing academic involvement allows him to stay closely connected with the latest dermatology research, treatments, and clinical innovations.
Patient Experience & Satisfaction
Patients consistently describe Dr. Ramachandran as compassionate, attentive, and highly knowledgeable. Many appreciate the time he takes to listen carefully to concerns and explain treatment plans in a clear, reassuring manner.
Convenient Locations in New York
Dr. Ramachandran sees patients at SINY Dermatology offices in Brooklyn and Queens.
Bay Ridge
7901 4th Ave Brooklyn, NY 11209 Phone: 800-778-3090
Hours:
Mon–Thu: 9:00 AM – 8:00 PM
Fri: 9:00 AM – 6:30 PM
Sat: 9:00 AM – 3:00 PM
Sun: 9:00 AM – 2:00 PM
Serving patients from: Bay Ridge, Dyker Heights, Bensonhurst, Sunset Park, Fort Hamilton, Staten Island, and surrounding South Brooklyn communities.
109-33 71st Road, Suite 1F Forest Hills, NY 11375 Phone: 800-778-3090
Hours:
Mon: 9:00 AM – 8:00 PM
Tue: 9:00 AM – 7:00 PM
Wed–Thu: 8:00 AM – 8:00 PM
Fri: 9:00 AM – 7:00 PM
Sat: 9:00 AM – 5:00 PM
Sun: 10:00 AM – 3:00 PM
Serving patients from: Forest Hills, Rego Park, Kew Gardens, Flushing, Jamaica, Richmond Hill, Elmhurst, Corona, Middle Village, and surrounding Queens communities.
Dr. Ramachandran accepts many major insurance plans commonly used across New York, including:
Aetna
Anthem Blue Cross Blue Shield / Empire Blue Cross Blue Shield
Blue Cross Blue Shield
Cigna
UnitedHealthcare & Oxford
EmblemHealth (GHI / HIP)
Healthfirst (NY)
Medicare
Fidelis Care (NY)
Humana
MagnaCare
Multiplan PHCS
Oscar Health
1199SEIU
Additional plans may also be accepted. Patients are encouraged to confirm coverage prior to scheduling.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York (SINY®) is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York City and Long Island. SINY physicians combine advanced clinical training, academic excellence, and patient-centered care to deliver individualized, evidence-based treatment for every patient.
Brendan Camp, MD, is double board-certified in dermatology and dermatopathology and sees patients at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery, which has locations in Upper East Side, Hampton Bays, Commack, Smithtown, Plainview, and Midtown East of Manhattan, New York. Patients have been coming to him for his expertise managing medical conditions like acne, rosacea, eczema, warts, psoriasis, moles, and skin cancer, as well as cosmetic concerns and treatments with Botox®, fillers, lasers, and other skin rejuvenation devices.
Dr. Camp graduated with honors from Cornell University, earning a degree in biochemistry. As a medical student at SUNY Upstate Medical University in Syracuse, he participated in a one-year epidemiology fellowship at the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, where he participated in viral outbreak investigations. He completed his internship in internal medicine at the University of Chicago and later completed additional residency training in dermatology at New York-Presbyterian Hospital/Weill Cornell Medical Center. He also completed a fellowship in dermatopathology at Memorial Sloan-Kettering Cancer Center in 2012.
He has previously served as an assistant professor of dermatology at George Washington University School of Medicine and Health Sciences and worked in private practice just outside Washington DC in Northern Virginia.
Dr. Camp is the author of several scientific articles that have been published in the Journal of the American Academy of Dermatology, the Journal of Cutaneous Pathology, and the Journal of Clinical Oncology. He has also presented at meetings of the American Academy of Dermatology, the American Society of Dermatopathology, and the Society for Investigative Dermatology. Additionally, he is a reviewer for the Journal of the American Academy of Dermatology Case Reports, a member of the Curriculum Task Force and previous member of the Public Education Committee of the American Academy of Dermatology, and a contributor to Men’s Health magazine.
In his spare time, he enjoys cooking, golfing, and photography. He has also been published twice in the New York Times.
“Dr. Camp was excellent. He was very knowledgeable, took his time in answering all my questions, and was thorough, which I greatly appreciated. I always recommend friends, family and colleagues to MCDS!”
Dr. Brendan Camp
Dermatologist
353 Veterans Memorial Highway
Suite 101
Commack, NY 11725
4.92(1195)
4.91
(2018)
Dr. Noah Gratch, MD
Dermatologist 29.0 mi
4.91(2018)
353 Veterans Memorial Highway
Suite 101
Commack, NY 11725
Noah Gratch, MD, FAAD, a board-certified dermatologist, serves patients from throughout Manhattan, Commack, Hampton Bay and Plainview, NY at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery. He provides a wide variety of treatments for acne, eczema, hyperhidrosis, rosacea, psoriasis, and skin cancer as well as procedures including advanced skin cancer treatment such as Mohs Surgery, sclerotherapy, mole removal and cosmetic dermatology services such as Botox®, fillers, and laser treatments.
Dr. Gratch is a graduate of University of California Los Angeles, University of Southern California and Cornell. Following residency, Dr. Gratch became a Clinical Instructor of Dermatology at the Weill Medical College of Cornell University in New York City. Dr. Gratch is a fellow of the American Academy of Dermatology and the American Society of Dermatologic Surgery.
Patients benefit from Dr. Gratch’s extensive training and experience in dermatology and cosmetic services. He wants to help each and every patient not only look and feel great but maintain the best possible skin health.
Dr. Gratch and his colleagues at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery are currently welcoming new patients and accept most major forms of insurance.
Dr. Gratch has previously served as a Clinical Instructor of Dermatology at the Weill Medical College of Cornell University. He is also an active contributor in the academic world of dermatology, having overseen numerous research projects in cutaneous diseases with published papers and articles in several scientific journals and books.
Dr. Gratch is a fellow of the American Academy of Dermatology and the American Society of Dermatologic Surgery.
We are excited to welcome Dr. Kalee Shah to MDCS Dermatology! Dr. Shah is double board-certified in Dermatology and Micrographic Dermatologic Surgery by the American Board of Dermatology
She grew up in Southern California and graduated as a Presidential and Renaissance scholar from the University of Southern California. She subsequently moved to New York to earn her medical degree at Weill Cornell Medical College. During medical school, she was inducted into the Alpha Omega Alpha honor society and a recipient of the Glasgow-Rubin Memorial Achievement Award honoring select women for academic achievement.
Dr. Shah completed her internship at Memorial Sloan Kettering Cancer Center and her dermatology residency at New York-Presbyterian Weill Cornell Medical Center. In her final year, she served as Chief Resident. Following residency, she completed subspecialty fellowship training in Mohs micrographic surgery, cutaneous oncology, and reconstructive surgery at Memorial Sloan Kettering Cancer Center and Weill Cornell Medicine. She then became Director of Mohs Micrographic Surgery at Northwell-Lenox Hill Hospital.
Dr. Shah's primary clinical focus is the management of skin cancers including squamous cell carcinoma, basal cell carcinoma, early-stage melanoma, and rare cutaneous tumors. She additionally provides medical, cosmetic, and laser dermatology services. Dr. Shah lives in New York City with her husband and miniature dachshund, Gus.
Board certifications:
Dermatology - American Board of Dermatology
Academic titles
Assistant Professor, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell
Education:
Weill Cornell Medical College
Residencies:
New York Hospital Weill Cornell Medical Center
Fellowships:
Memorial Sloan-Kettering Cancer Center
Practice
MDCS Dermatology: Medical Dermatology and Cosmetic Surgery
Regina Yavel, MD, FACMS, FAAD is a board certified and fellowship trained Mohs Surgeon, is a graduate of Brown University and SUNY Downstate Medical Center. Dr. Yavel is a Fellow of the American Academy of Dermatology, Dermatology Foundation Leaders Society, American Society of Dermatologic Surgery and American College of Mohs Surgery.
“The day of my appointment, Dr Husain was having trouble with the machine that analysis skin samples. The Doctor kept me informed and had his staff provide updates as my surgery progressed. They did not leave me in a room wondering what was going on but kept me up to date. That was greatly appreciated. ”
Dr. Regina Yavel, MD
Dermatologist
353 Veterans Memorial Highway
Suite 101
Commack, NY 11725
4.92(991)
4.91
(1187)
Dr. Michelle Ma, MD
Dermatologist 29.0 mi
4.91(1187)
353 Veterans Memorial Highway
Suite 101
Commack, NY 11725
Michelle W. Ma, MD, FAAD is a Board Certified Dermatologist who completed her residency through the Albert Einstein College of Medicine in June 2017. We're very excited to have her as a full-time provider at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery, located in Plainview, Commack, Manhattan, Upper East Side and Hampton Bays, New York. In her professional and educational work, Dr. Ma has:
Completed multiple postdoctoral programs
Published articles in a variety of professional journals
Participated in presentations across the nation
Dr. Ma graduated from Cornell University with a degree in biological sciences. She then:
Pursed her Doctor of Medicine at the New York University School of Medicine
Served as an intern at Tufts Medical Center in Boston, Massachusetts
Began and continues her dermatology residency at MDCS
She has completed two postdoctoral fellowships. Dr. Ma was a Dermatopharmacology Fellow at the Montefiore Medical Center/Albert Einstein College of Medicine, in Bronx, New York. She was also a Melanoma Translational Research Fellow at the Department of Dermatology at New York University.
Dr. Ma has also been the recipient of numerous awards. These include:
The Maurice Husik Prize for the best paper written by a dermatology resident/fellow
The Todd Nagel Research Grant Award from The Skin Cancer Foundation
The Medicine Clerkship Award for outstanding essay in medical science
Merrill Presidential Scholar
The William T. Keeton Prize for academic excellence in introductory biology
“Dr. Ma has been my dermatologist for a few years now after changing from my previous doctor. She is very warm and caring. Her skin exams are extremely thorough of which they should be. I would highly recommend Dr. Ma for anyone searching for an excellent Dermatologist.”
Dr. Michelle Ma, MD
Dermatologist
353 Veterans Memorial Highway
Suite 101
Commack, NY 11725
4.91(1187)
4.92
(1019)
Christos Zouzias
Dermatologist 29.0 mi
4.92(1019)
353 Veterans Memorial Highway
Suite 101
Commack, NY 11725
Christos Dimitris Zouzias, MD, MBA, is a board-certified dermatologist and fellowship-trained Mohs Micrographic Surgeon at MDCS Dermatology. Dr. Zouzias specializes in procedural dermatology, skin cancer management, and Mohs micrographic surgery, offering personalized and patient-centered care to ensure the best outcomes for his patients. He serves patients at MDCS Dermatology's Long Island locations, including Commack, Hampton Bays, and Plainview.
Dr. Zouzias earned both his Bachelor of Arts and Doctor of Medicine degrees at New York University (NYU) in New York City. He also holds a Master of Business Administration (MBA) from NYU’s Stern School of Business. Prior to medical school, he completed a student research fellowship in supportive oncodermatology, studying the dermatologic side effects of chemotherapy and radiation therapy under the mentorship of Dr. Beth McLellan, the current chief of dermatology at Montefiore Medical Center.
Following his medical degree, Dr. Zouzias completed his internship in internal medicine at North Shore Long Island Jewish Medical Center and his dermatology residency at Albert Einstein College of Medicine/Montefiore Medical Center, where he was recognized as the Outstanding House Officer for his compassion, clinical excellence, and professional rapport. He further specialized by completing his fellowship training in Mohs Micrographic Surgery at Affiliated Dermatologists and Dermatologic Surgeons in New Jersey.
In his free time, Dr. Zouzias enjoys cooking and spending time with his nieces and nephews.
Practice
MDCS Dermatology: Medical Dermatology and Cosmetic Surgery
Lauren Penzi, MD, is an experienced dermatologist with the team at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery. Dr. Penzi welcomes patients at the practice’s locations in Commack, Plainview, and Hampton Bays, New York.
Dr. Penzi completed her bachelor’s degree in biology and mathematical sciences at Loyola University Maryland, where she graduated summa cum laude. She went on to finish her medical degree at New York Medical College in Valhalla, where she was a member of the Alpha Omega Alpha honors society. After graduating, Dr. Penzi completed an internal medicine preliminary internship at NYU Winthrop Hospital in Mineola, New York, before pursuing an alopecia clinical and research fellowship at Massachusetts General Hospital in Boston. She then furthered her training with a dermatology residency at Johns Hopkins Hospital in Baltimore, Maryland.
Dr. Penzi is a member of various academic and professional organizations, including the Phi Beta Kappa Honor Society, American Academy of Dermatology, American Society for Dermatologic Surgery, Society for Pediatric Dermatology, American Society for Laser Medicine & Surgery, and the Women’s Dermatologic Society.
In addition to her clinical training, Dr. Penzi has been published in numerous peer-reviewed medical journals and presented her research findings at various medical conferences and additionally has authored a book chapter on emergency dermatology.
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Dr. Lauren Penzi is a board-certified dermatologist who specializes in medical and cosmetic dermatology. Dr. Penzi’s training and credentials set her apart as a premier dermatologist on Long Island. She attended New York Medical College, where she was admitted to the prestigious Alpha Omega Alpha honor society for graduating in the top 10% of her medical school class. She completed her intern year at NYU Winthrop Hospital and went on to complete her dermatology residency training at the renowned Johns Hopkins Hospital. Additionally, Dr. Penzi also spent a year at Harvard Dermatology for a hair loss fellowship at Massachusetts General Hospital. Throughout her training, Dr. Penzi has made many notable research contributions, and has been published in some of the top dermatology journals including JAMA Dermatology, as well as the Journal of the American Academy of Dermatology. She continues to stay at the forefront of dermatologic education and research in order to provide the best care to her patients.
Dr. Penzi is dedicated to the health and beauty of her patients’ skin. She prioritizes preventative measures to combat both skin cancer and aging. Dr. Penzi treats patients of all ages and has a special interest in acne, rosacea, skin cancer, eczema, psoriasis, and hair loss. She believes in a personalized, comprehensive, and natural approach to cosmetic dermatology. She enjoys performing a wide range of cosmetic procedures including neurotoxins, fillers, platelet rich plasma injections, and cutting-edge laser treatments.
Dr. Penzi was born and raised on Long Island, NY, where she now resides with her husband and son. She is thrilled to be able to practice dermatology in her hometown. Dr. Penzi welcomes patients at the Plainview, Commack, and Hampton Bays locations.
“I've been going to Dr. Penzi for many years now and couldn't recommend her more. From skin checks, to mole removals, to botox, Dr. Penzi is the best!”
Dr. Lauren Penzi, MD
Dermatologist
353 Veterans Memorial Highway
Suite 101
Commack, NY 11725
4.92(1195)
Shirley Xu, FNP-BC
Family Nurse Practitioner 30.0 mi
Shirley Xu, DNP, FNP-BC is a Board-Certified Family Nurse Practitioner specializing in medical and cosmetic dermatology. She received her Bachelor’s degree from the University at Buffalo and her Master’s degree and Doctor of Nursing Practice (DNP) degree from Columbia University.
Shirley Xu sees patients for dermatology concerns including but not limited to eczema, acne, rosacea, hair loss, and psoriasis as well as aesthetic and procedural treatments. She is dedicated to treating patients with an individualized approach. She understands how dermatological conditions can impact the quality of one’s life and is committed to helping her patients feel empowered and confident in their own skin. She is passionate about skincare and utilizes her research background to stay up to date about skincare ingredients, treatments, and procedures.
Born and raised in New York City. Shirley is fluent in two dialects of Chinese. In her free time, she enjoys playing with her bunny Momo, biking and traveling internationally.
Dr. Regina Zambrano DiFiore is a board-certified dermatologist at the Skin Institute of New York (SINY®), providing comprehensive dermatologic care at the Massapequa, Long Island location. Born and raised on the South Shore of Long Island, Dr. Zambrano DiFiore is proud to serve the community she calls home, caring for patients of all ages with a compassionate, highly personalized approach.
She is trained in medical, pediatric, and cosmetic dermatology, with advanced experience treating all skin types. Patients appreciate her thorough evaluations, clear communication, and commitment to developing treatment plans that align with each individual’s needs and goals.
Dr. Zambrano DiFiore’s academic excellence and leadership background reflect her dedication to high-quality, evidence-based dermatologic care:
Bachelor of Science in Biology (Honors) – Stony Brook University Specialization: Developmental Genetics
Doctor of Osteopathic Medicine (DO) – Nova Southeastern University, Fort Lauderdale, FL
Master of Public Health (MPH) – Nova Southeastern University
Internship & Dermatology Residency – St. John’s Episcopal Hospital Chief Resident, Final Year
Her dual medical and public health training allows Dr. Zambrano DiFiore to approach dermatology with a broad, patient-centered perspective that emphasizes both treatment and long-term skin health.
Clinical Expertise & Special Interests
Dr. Zambrano DiFiore provides comprehensive care for conditions affecting the skin, hair, and nails, including both common and complex dermatologic concerns. Her areas of focus include:
Medical dermatology for acute and chronic skin conditions
Pediatric dermatology
Skin cancer screening and early detection
Hair and scalp disorders
Nail conditions
Cosmetic dermatology, including:
Neurotoxins (Botox® and similar treatments)
Dermal fillers
With a thoughtful, minimalistic approach to aesthetics, she focuses on enhancing her patients’ natural beauty—creating treatment plans that are subtle, balanced, and tailored to individual goals. Her philosophy centers on helping patients look refreshed, confident, and like the best version of themselves.
Patient-Centered Philosophy
Dr. Zambrano DiFiore is deeply committed to building long-term relationships with her patients. She strives to create an approachable, supportive environment where patients feel heard, respected, and actively involved in their care.
She is passionate about patient education, empowering individuals to understand their conditions and treatment options so they can confidently participate in their dermatologic journey. Dr. Zambrano DiFiore remains actively engaged with the latest advancements in dermatology to ensure her patients receive safe, effective, and innovative care.
Patient Experience & Satisfaction
Patients consistently describe Dr. Zambrano DiFiore as attentive, knowledgeable, and genuinely caring. Many highlight her ability to listen closely, explain treatment options clearly, and follow up personally to ensure optimal outcomes.
Convenient Location in Long Island
Dr. Zambrano DiFiore sees patients at the SINY Dermatology Massapequa office, serving families and individuals throughout the South Shore of Long Island.
Massapequa, Long Island
83A Grand Ave, Massapequa, NY 11758 Phone: 800-778-3090
Hours:
Mon, Thu & Fri: 9:00 AM – 5:00 PM
Tue: 12:00 PM – 8:00 PM
Wed: Closed
Sat: By appointment
Sun: Closed
Serving patients from: Massapequa, Massapequa Park, Seaford, Wantagh, Bellmore, Amityville, Farmingdale, and surrounding Long Island communities.
Dr. Zambrano DiFiore accepts many major insurance plans commonly used throughout Long Island and New York, including:
Aetna
Anthem Blue Cross Blue Shield / Empire Blue Cross Blue Shield
Blue Cross Blue Shield
Cigna & Cigna-HealthSpring
UnitedHealthcare & Oxford
EmblemHealth (GHI)
Healthfirst (NY)
Medicare
Humana
Fidelis Care (NY)
AvMed
1199SEIU
Multiplan PHCS
Additional plans may be accepted. Please contact SINY Dermatology to confirm coverage prior to your visit.
About SINY Dermatology (Skin Institute of New York)
The Skin Institute of New York (SINY®) is a leading dermatology group providing medical, surgical, and cosmetic dermatology services across New York. SINY Dermatology physicians combine academic excellence, advanced clinical training, and patient-focused care to deliver high-quality, individualized treatment for every patient.
