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Dr. Sydney Liang, MD

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.

Schedule an Appointment with Dr. Liang

Education & Academic Distinction

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.

Book Online

Vignesh Ramachandran, MD, is a board-certified dermatologist and fellow of the American Academy of Dermatology who treats adults and children in full-spectrum general, medical, and cosmetic dermatology conditions affecting the skin, hair and nails. When he was a child, he and his family immigrated to a small town of 16,000 in Ontario, Canada before his educational journey brought him to the United States. Dr. Ramachandran still maintains those small town values, merging relentless hard work with compassion, honesty and humility to care for his patients and community.

Dr. Ramachandran graduated as a Presidential Scholar from the Dean’s Scholars Honors Program at the University of Texas at Austin. He then graduated #1 in his medical school class at the top-ranked Baylor College of Medicine in Houston, Texas, where he was inducted into the prestigious Gold Humanism and Alpha Omega Alpha Honor Societies. He went on to complete his internship in Internal Medicine at Texas Health Presbyterian Hospital Dallas, where he was awarded Outstanding Intern of the Year. Dr. Ramachandran then completed his dermatology residency at the world-renowned Ronald O. Perelman Department of Dermatology at New York University. By the end of his three years of residency, he was nationally recognized as a 3-time 'Rising Derm Star’, was an investigator in several clinical trials, published 100 peer-reviewed research papers, and served on national dermatology committees. He culminated his residency training with the Irwin M. Freedberg, M.D. Award for the resident who has done the most to advance Dermatology in the ‘House of Medicine’.

Dr. Ramachandran sees patients at the SINY® Dermatology offices in Bayridge and Forest Hills. He also serves as a Clinical Instructor in the Ronald O. Perelman Department of Dermatology at New York University, where he conducts hospital consultations at NYU Langone Hospital Brooklyn and teaches residents.

Dr. Regina Zambrano DiFiore, DO

Board-Certified Dermatologist | Medical, Pediatric & Cosmetic Dermatology

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.

Schedule an Appointment with Dr. Zambrano DiFiore

Education & Training

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.

Schedule an Appointment at Massapequa

Accepted Insurance Plans

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.

Book Online

Dr. Aurash Bina is a board-certified dermatologist with a robust background in medical dermatology and skin cancer screening and prevention. His dedication to delivering high-quality, patient-centered care is reflected in his thorough approach and unwavering commitment to ensuring each patient feels valued, understood, and reassured.

A native Texan, Dr. Bina earned his Bachelor of Science degree from the University of Texas in Austin. He then went on to receive his medical degree from Touro University in California, subsequently completing his medical internship and dermatology residency at St. John's Episcopal Hospital in Queens, NY. His tenacity and commitment to his field led to his appointment as Chief Dermatology Resident, a role that allowed him to hone his leadership skills and deepen his understanding of diverse skin conditions.

Dr. Bina brings an additional layer of expertise to his practice in the form of cosmetic dermatology. He takes pride in offering the latest in injectables and laser treatments, enhancing not only the health but also the confidence of his patients.

Keeping abreast of the latest advancements in dermatology, Dr. Bina is a proactive learner, always striving to refine his knowledge and techniques. His dedication to the profession extends beyond his practice, as he contributes to the broader understanding of dermatology through presentations and collaborative research efforts.

In his practice, Dr. Bina prioritizes personalized care, developing comprehensive treatment plans that address both immediate concerns and long-term skin health. He believes in fostering an environment where patients feel comfortable discussing their skin health concerns, and he understands the impact of skin health on overall well-being.

Outside of his practice, Dr. Bina maintains a well-rounded lifestyle, remaining active through community sports leagues and spending time with his family and close friends.

Dr. Bina looks forward to welcoming you to the Skin Institute of New York (SINY®) and working alongside you to achieve radiant, healthy skin.

Michael Tassavor, MD, MS, is a board-certified dermatologist and attending physician at MDCS: Medical Dermatology and Cosmetic Surgery with offices in the Midtown East and Upper East Side neighborhoods of New York City, as well as Smithtown, Commack, Hampton Bays, and Plainview, New York, and Clifton, Marlboro, and Englewood, New Jersey. 

Dr. Tassavor provides medical and cosmetic dermatology care and performs highly specialized Mohs surgery to treat skin cancer.

After earning his Bachelor of Science in molecular and cell biology at the University of Connecticut (UConn) in Storrs, Connecticut, Dr. Tassavor completed a Master of Science in biomedical sciences at Tufts University in Boston, Massachusetts.

He continued his schooling at the UConn School of Medicine in Farmington, Connecticut, earning his Doctor of Medicine. He completed a one-year medical internship at Tufts Medical Center in Boston before relocating to New York City for his dermatology residency at Icahn School of Medicine at Mount Sinai. 

Then, Dr. Tassavor completed his micrographic surgery and dermatologic oncology fellowship training with Brett Coldiron, MD, in Cincinnati, Ohio. 

Dr. Tassavor is a fellow of the American Academy of Dermatology (AAD), a resident member of the New York State Society of Dermatology and Dermatologic Surgery (NYSSDDS), and on the coding and reimbursement committee of the AAD.

Dedicated to his profession, Dr. Tassavor has published multiple scientific studies in peer-reviewed journals and authored a chapter in a dermatological surgery book.

While in school, Dr. Tassavor gained an interest in working with underserved and vulnerable individuals and continues to use his skills as a physician to provide expert care to those in need.

Carolyn Stull, MD, FAAD, is a board-certified dermatologist and fellowship-trained dermatologic surgeon. She treats the full spectrum of dermatologic conditions and specializes in Mohs micrographic surgery, surgical reconstruction following skin cancer removal, and facial aesthetics.

Dr. Stull is originally from Philadelphia and served as an Instructor of Dermatology at the University of Pennsylvania prior to joining MDCS. She earned her undergraduate degree from the University of Miami and her medical degree from Temple University School of Medicine. Dr. Stull completed dermatology residency at Rush University Medical Center in Chicago where she served as chief resident. She subsequently completed a fellowship in Mohs micrographic surgery and dermatologic oncology at the University of Texas M.D. Anderson Cancer Center. During fellowship she trained with experts in the management of rare and advanced skin cancers, complex surgical reconstruction and laser procedures. She also served as a sub-investigator for several clinical trials testing oncolytic viruses and immunotherapies for skin cancer treatment.

Dr. Stull has published numerous articles in peer-reviewed journals including the Journal of the American Academy of Dermatology, JAMA Dermatology and Dermatologic Surgery. She has been an invited speaker at regional and national meetings, and has been awarded grant funding from the University of Pennsylvania Center for Human Appearance and the Pennsylvania Medical Society for medical device innovation. She is a fellow of the American Academy of Dermatology and American Society for Dermatologic Surgery.

Outside of the office Dr. Stull enjoys traveling and spending time with her husband who is plastic surgeon and their daughter.

Toral Vaidya, MD, MPH, is a dermatologist serving New York City patients on the Upper East Side and Midtown Manhattan at MDCS Dermatology. She performs a wide variety of medical, cosmetic, and surgical dermatology services. 

Dr. Vaidya completed her undergraduate and graduate education at the University of Cincinnati in the BS/MD Dual Admissions Program in Medicine. She earned her MD and Master’s in Public Health from the University of Cincinnati College of Medicine. During medical school, Dr. Vaidya was selected for a prestigious clinical research fellowship in dermatology at Memorial Sloan Kettering Cancer Center, where she conducted studies in oncodermatology and procedural dermatology. She graduated at the top of her class with a Distinction in Dermatology. She then completed her internship in Internal Medicine at Mount Sinai Hospital and her residency in Dermatology at New York Presbyterian Hospital/Weill Cornell Medical Center. 

Throughout her training, she developed a keen interest in skincare, skin of color, and cosmetic dermatology. She has authored over 20 scientific publications in prominent dermatology journals and has presented her work at national and international meetings. She is a member of several professional organizations, including the Skin of Color Society, the American Society for Dermatologic Surgery, and the American Society for Laser Medicine and Surgery. 

Dr. Vaidya is a media expert who regularly writes for and contributes to medical and beauty publications, including Medscape Dermatology, US News and World Report, and Byrdie Beauty. Additionally, she pursued an elective in medical journalism at the ABC News Medical Unit, where she helped produce medical segments for Good Morning America and wrote digital articles. 

Dr. Vaidya's interests in aesthetics and procedural dermatology are complemented by her certification in Fashion Design and Garment Construction from Parsons School of Design in New York City. In her free time, she enjoys traveling and exploring the arts.

Snehal Amin, MD, FACMS, FAAD is co-founder and surgical director of MDCS Dermatology: Medical Dermatology & Cosmetic Surgery, located in Manhattan, Upper East Side, Commack, Hampton Bays and Plainview, NY, Clifton, and Englewood, New Jersey. As a board-certified dermatologic surgeon, he has:

• Provided top-notch patient care and life changing skin transformations
• Published numerous ongoing publications
• Focused on Mohs micrographic surgery, laser resurfacing, pediatric/adult lasers, and facial cosmetic reconstructions

Dr. Amin has:

• Previously served as Director of Mohs, Laser, and Dermatologic Surgery for New York Medical College
• Previously served as the interim Director of Mohs Surgery at Cornell - New York Presbyterian Medical Center
• Received numerous research grants for his groundbreaking work in melanoma, laser medicine, and skin cancer biology

Dr. Amin graduated from Harvard College (magna cum laude)with dual degrees in Biology and Sanskrit. He then:

• Graduated from  Albert Einstein College of Medicine Alpha omega alpha medical honor society
• Served as Chief Resident in dermatology at Cornell’s New York-Presbyterian Hospital
• Became board certified in skin cancer surgery and cosmetic dermatologic surgeries

Dr. Amin currently serves as Clinical Assistant Professor of Dermatology at Weill-Cornell Medical College. He is a fellow of both the American College of Mohs Surgery and the American Society of Dermatologic Surgery.

Monica Schadlow, MD, FAAD is a board-certified dermatologist at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery, who has been providing general and cosmetic dermatology care to patients of Manhattan since 2001. She has extensive experience in laser hair removal, peels, Botox, Restylane, Juvederm, and numerous other skin enhancement and rejuvenation services.

In addition to her unmatched skill and knowledge, patients praise Dr. Schadlow for her gentle nature and willingness to educate them about their condition.

She stands out for her ability and priority in putting patients at ease during procedures and the personalized attention she brings to all cases.

Dr. Schadlow earned her bachelor’s degree from Swarthmore College, then went on to earn her medical degree from Weill Cornell Medical College. She continued her post-graduate medical training with an internship in internal medicine at St. Vincent’s Hospital and Medical Center in New York City and later served as Chief Resident for her residency at NewYork Presbyterian Hospital. For the past 15 years, Dr. Schadlow has worked in private practice dermatology. She sees patients full-time at MDCS Dermatology: Medical Dermatology & Cosmetic Surgery.

In addition to treating patients, Dr. Schadlow is a contributor to online and print journals. Dr. Schadlow is an officer of the Dermatologic Society of Greater New York, a member of the American Dermatology Board, and is a fellow of the American Academy of Dermatology and the American Society of Dermatologic Surgery. In her free time, she enjoys hanging out with friends and family.

Dr. Marc Avram is a Harvard-trained board certified dermatologist and hair loss specialist, practicing in the Upper East Side of New York City. Dr. Avram treats men and women with a variety of services to treat hair loss, including hair transplants, platelet rich plasma (PRP) treatments, low laser light therapy, and medications for hair loss. 

In addition to treating patients, Dr. Avram is a clinical professor of dermatology at the New York Presbyterian Hospital - Weill Medical College at Cornell Medical Center and has authored five textbooks on hair loss, and hair transplantation.

Dr. Avram and his staff provide exceptional care to all patients at his practice, Marc Avram MD. He has been in practice for over 20 years and many of his staff have been with him since the beginning, perfecting their techniques and approach to ensure the best possible patient outcomes.

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.

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Vignesh Ramachandran, MD, is a board-certified dermatologist and fellow of the American Academy of Dermatology who treats adults and children in full-spectrum general, medical, and cosmetic dermatology conditions affecting the skin, hair and nails. When he was a child, he and his family immigrated to a small town of 16,000 in Ontario, Canada before his educational journey brought him to the United States. Dr. Ramachandran still maintains those small town values, merging relentless hard work with compassion, honesty and humility to care for his patients and community.

Dr. Ramachandran graduated as a Presidential Scholar from the Dean’s Scholars Honors Program at the University of Texas at Austin. He then graduated #1 in his medical school class at the top-ranked Baylor College of Medicine in Houston, Texas, where he was inducted into the prestigious Gold Humanism and Alpha Omega Alpha Honor Societies. He went on to complete his internship in Internal Medicine at Texas Health Presbyterian Hospital Dallas, where he was awarded Outstanding Intern of the Year. Dr. Ramachandran then completed his dermatology residency at the world-renowned Ronald O. Perelman Department of Dermatology at New York University. By the end of his three years of residency, he was nationally recognized as a 3-time 'Rising Derm Star’, was an investigator in several clinical trials, published 100 peer-reviewed research papers, and served on national dermatology committees. He culminated his residency training with the Irwin M. Freedberg, M.D. Award for the resident who has done the most to advance Dermatology in the ‘House of Medicine’.

Dr. Ramachandran sees patients at the SINY® Dermatology offices in Bayridge and Forest Hills. He also serves as a Clinical Instructor in the Ronald O. Perelman Department of Dermatology at New York University, where he conducts hospital consultations at NYU Langone Hospital Brooklyn and teaches residents.

Book Online

Dr. Rebeca Teplitz is a board-certified dermatologist specializing in medical, surgical, and cosmetic dermatology. She provides expert care for a diverse range of skin, hair, and nail conditions for patients of all ages.

Dr. Teplitz graduated magna cum laude from the George Washington University with a degree in cognitive neuroscience and a minor in business administration. She earned her medical degree from the New York Institute of Technology College of Osteopathic Medicine. She went on to complete her internship in Family Medicine and her Dermatology Residency at St. John's Episcopal Hospital, where she excelled as Chief Resident.

Dedicated to continuous learning and advancement in dermatology, Dr. Teplitz regularly contributes to research and has authored numerous articles in peer-reviewed journals. She serves on the editorial board for SKIN The Journal of Cutaneous Medicine and is an active member of the American Academy of Dermatology. Dr. Teplitz also dedicates time to educating the next generation of dermatologists as a Clinical Instructor at NYU.

With a patient-centered philosophy, Dr. Teplitz focuses on creating personalized care plans that aim to boost confidence and comfort, while enhancing the natural beauty of her patients. Her commitment ensures every patient feels fully supported throughout their treatment journey, helping them meet their unique needs and goals.

Beyond her clinical practice, Dr. Teplitz enjoys spending time with her family, practicing Pilates, and immersing herself in the vibrant culture of New York City. She stays up-to-date with the latest trends in dermatology and skincare to bring the most effective treatments to her patients.

Dr. Teplitz looks forward to welcoming you and working together to achieve healthy, glowing skin so you can feel your best, both inside and out!

Dr. Sydney Liang, MD

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.

Schedule an Appointment with Dr. Liang

Education & Academic Distinction

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.

Dr. Regina Zambrano DiFiore, DO

Board-Certified Dermatologist | Medical, Pediatric & Cosmetic Dermatology

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.

Schedule an Appointment with Dr. Zambrano DiFiore

Education & Training

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.

Schedule an Appointment at Massapequa

Accepted Insurance Plans

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. Sergey Petrosian, DO

Board-Certified Dermatologist | Medical & Pediatric Dermatology

Dr. Sergey Petrosian is a board-certified dermatologist at the Skin Institute of New York (SINY®), providing comprehensive dermatologic care to adult and pediatric patients across Brooklyn and Manhattan. A native New Yorker who grew up in Queens, Dr. Petrosian is deeply connected to the communities he serves in Park Slope, Bay Ridge, and the Upper East Side

Known for his thorough evaluations, attentive bedside manner, and patient-centered treatment plans, Dr. Petrosian is committed to delivering evidence-based dermatologic care in a welcoming, professional environment.

Schedule an Appointment with Dr. Petrosian

Education & Training

Dr. Petrosian’s academic and medical training reflect strong New York roots and rigorous clinical preparation:

• Graduate of Brooklyn Technical High School
• Bachelor of Science – University of Medicine and Dentistry of New Jersey
• Dermatology Residency (Chief Resident) – Stony Brook University
• Doctor of Osteopathic Medicine (DO) – New York Institute of Technology College of Osteopathic Medicine (formerly NYCOM)
• Dermatology Residency – St. John's Episcopal Hospital, affiliated with Lake Erie College of Osteopathic Medicine

His residency training provided comprehensive experience in medical dermatology, procedural dermatology, and the management of complex skin conditions across diverse patient populations

Clinical Expertise & Special Interests

Dr. Petrosian treats both adult and pediatric patients and provides care for a wide range of dermatologic conditions, including:

• Acne and inflammatory skin conditions
• Eczema and psoriasis
• Skin cancer screenings and lesion evaluation
• Pediatric dermatology
• General medical dermatology
• Preventative skin care

Patients consistently note his ability to listen carefully, thoroughly explain diagnoses, and create structured treatment plans that lead to measurable improvement.

Patient Experience & Satisfaction

Patients frequently describe Dr. Petrosian as kind, knowledgeable, and exceptionally thorough. Many appreciate that he takes the time to address concerns in detail and follows up thoughtfully to ensure progress and symptom improvement.

Convenient Locations in New York

Dr. Petrosian sees patients at SINY Dermatology offices in Brooklyn and Manhattan.

Park Slope, Brooklyn

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, Cobble Hill, Carroll Gardens, Windsor Terrace, Sunset Park, and surrounding Brooklyn communities.

Schedule an Appointment at Park Slope

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
• Fri: 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.

Schedule an Appointment on the Upper East Side

Accepted Insurance Plans

Dr. Petrosian accepts a wide range of major insurance plans, including:

• Aetna
• Anthem Blue Cross Blue Shield / Empire Blue Cross Blue Shield
• Blue Cross Blue Shield
• Cigna & Cigna-HealthSpring
• UnitedHealthcare & Oxford
• EmblemHealth (GHI / HIP)
• Healthfirst (NY)
• Medicare
• Fidelis Care (NY)
• Humana
• MagnaCare
• Meritain Health
• Multiplan PHCS
• Oscar Health
• 1199SEIU
• Surest Health Plans
• Regence Blue Cross Blue Shield

Additional plans accepted. Patients are encouraged to confirm coverage prior to scheduling.

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.

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Ronald R. Brancaccio, MD, founded the Skin Institute of New York (SINY®) in 1979. He diagnoses and treats a wide variety of skin conditions at SINY’s® three offices in the West Village of New York City and the Bay Ridge and Park Slope areas of Brooklyn, New York.

After earning his medical degree from George Washington University School of Medicine in Washington, D.C., Dr. Brancaccio completed an internship at Lenox Hill Hospital in New York City. He then completed his residency in dermatology at the University of Oregon Health Sciences Center in Portland, Oregon.

Dr. Brancaccio is board-certified in dermatology, and he is a clinical professor at New York University School of Medicine in New York City. When he’s not tending to patients at SINY® or teaching future dermatologists, he lectures on dermatology-related topics and has authored more than 40 scholarly publications, primarily on the subject of skin allergies.

Currently serving on the board of directors of the American Contact Dermatitis Society and the New York State Society of Dermatology and Dermatologic Surgery, Dr. Brancaccio has also served as president of the New York Dermatologic Society, the Bay Ridge Medical Society, and the Dermatologic Society of Greater New York,  He maintains active memberships in those professional organizations as well as the American Academy of Dermatology and the Annenberg Circle Committee for the Dermatology Foundation, which supports vital dermatology research. In addition, he is an honorary member of the Brazilian Society of Dermatology and the Canadian Dermatology Association.

Dr. Brancaccio has received numerous professional honors throughout his long and distinguished career. Besides multiple inclusions on the prestigious list of New York Magazine’s Best Doctors, the nonprofit Dermatology Foundation named him the 2014 Practitioner of the Year.

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Sherry H. Hsiung, MD, is a board-certified dermatologic surgeon at the Skin Institute of New York (SINY®). Dr. Hsiung also practices general and cosmetic dermatology at SINY’s® three New York City–area offices, in the city’s West Village and in the Bay Ridge and Park Slope areas of Brooklyn, New York.

At the Massachusetts Institute of Technology in Cambridge, Massachusetts, Dr. Hsiung earned undergraduate degrees in both biology and chemical engineering, graduating with honors. While earning her medical degree from the University of Pennsylvania Medical School in Philadelphia, she was a member of the prestigious Alpha Omega Alpha Honor Medical Society. She then completed her residency in dermatology at New York University School of Medicine in New York City, serving as chief resident.

Dr. Hsiung retains active memberships in the American Academy of Dermatology and the American Society of Dermatologic Surgery, and she has lectured on dermatology topics at local and national conferences. She serves as a medical editor for the Journal of Drugs in Dermatology and is a consultant for the Kiehl’s Dermatology Advisory Board.

As a crucial part of the SINY® medical team, Dr. Hsiung specializes in Mohs Micrographic Surgery, a surgical technique used to treat skin cancer, focused on removing all of the cancer cells while preserving the healthy tissue in sensitive areas such as the face, hands, feet or genitals. She completed a prestigious fellowship in Mohs surgery with Dr. Perry Robins at NYU, and she is an active member of the American College of Mohs Surgery. Dr. Hsiung’s surgical expertise ranges from the simplest excisions to the most extensive skin cancer surgeries and repairs.