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Casandra is a board-certified Nurse Practitioner in family medicine. She has been a Nurse Practitioner since 2020. She has a bachelor's degree in nursing from SUNY EmpireState College and a master's degree from Mount Saint Mary College as a family nurse practitioner. Casandra has worked in critical care, emergency medicine, and surgerical services for over 30 years. During her time spent in the acute care setting, she developed a desire to help patients with their health before they fall ill. Casandra has a special interest in integrative health, anti-aging medicine, hormone replacement therapy, and weight loss with a focus on peptide therapy.

When she has free time, she likes to be in the kitchen cooking.

Medical & Cosmetic Dermatology – Long Island Offices

Brooke Cahill, PA-C, is a board-certified physician assistant specializing in medical and cosmetic dermatology at MDCS Dermatology’s Long Island locations. She holds a Master of Science in Physician Assistant Studies from Stony Brook University and a Bachelor of Science in Biology and Chemistry with Honors from Sacred Heart University.

A Diplomate Fellow of the Society of Dermatology Physician Assistants, Brooke is also an active member of the New York State Society of Physician Assistants and the American Academy of Physician Assistants. She maintains certifications in Advanced Cardiovascular Life Support (ACLS).

Brooke has advanced training in diagnosing and treating a wide spectrum of skin conditions including acne, eczema, psoriasis, hair loss, and skin cancer. She is skilled in an array of cosmetic treatments such as laser therapies, microneedling, chemical peels, platelet-rich plasma (PRP) for hair restoration, neurotoxins, and dermal fillers.

With a patient-centered philosophy, Brooke is passionate about providing individualized, evidence-based care. She remains committed to continuous learning to ensure her patients benefit from the most advanced dermatologic treatments available.

Meet Estelle, a passionate healthcare professional originally from the quaint rural town of Cumberland, MD. Her journey in the field of healthcare began with her academic pursuits at West Virginia University, where she earned her Bachelor of Science in Chemistry and Business Administration. At WVU, Estelle excelled academically and showcased her commitment to service as a leader in philanthropy for women's cardiac care through Alpha Phi Sorority.

With a solid foundation in science and business, Estelle spent five years in dermatology before pursuing a Master's degree in Physician Assistant studies at Saint Elizabeth University, focusing on dermatology and plastic surgery.

Estelle's comprehensive training at institutions such as Saint Joe's University Hospital, Good Samaritan, and Atlantic Health Systems reflects her dedication and diverse clinical experience. Board-certified (PA-C) and licensed in New York and New Jersey, she is a member of professional organizations, including the American Academy of Physician Assistants and the Society of Dermatology Physician Assistants. Her commitment to ongoing education is highlighted by completing a diplomats fellowship in dermatology.

Estelle's practice focuses on medical and dermatological care for all skin types, with a particular emphasis on cosmetic procedures to boost confidence in her patients. Her patients benefit from her approach, ensuring each individual receives personalized and comprehensive care. With a passion for advancing dermatological knowledge and enhancing the well-being of her patients, Estelle continues to make a meaningful impact in the field of dermatology. 

Sara Scalia, MS, PA-C    , is a board-certified Physician Assistant in who brings her expertise and dedication to dermatology to our Clifton New Jersey office at MDCS Dermatology. Sara’s passion for dermatology emerged during her time at the Rutgers University Physician Assistant Program, where she earned her Master of Science in Physician Assistant Studies.. Following graduation, she began practicing dermatology, previously working with Dermatology Associates of Central NJ, where she honed her skills in medical and cosmetic dermatology.
Sara's educational background includes a Bachelor’s degree in Neuroscience from Northeastern University in Boston. Her commitment to dermatology was strengthened through hands-on experience gained during dermatology and surgical rotations at Rutgers, which provided her with a strong foundation in treating a wide range of skin conditions. Sara is dedicated to delivering compassionate and patient-centered dermatologic care to each of her patients.

Dr. Juliet Ovshayev is a board certified physician of osteopathic medicine practicing for thirty-one years. She practices a unique blend of internal and holistic medicine to provide patients with the best results. By combining natural compounds, vitamins, herbs, and prescription medicines, she is able to reduce symptoms, alleviate suffering, and treat "the root of the problem". Her expertise goes beyond the basic expectation of primary care physicians. She has experience in functional and cosmetic medicine, and is an esteemed member of the American Academy of Anti-Aging Medicine. Her approach utilizes the medicine of tomorrow today.

Board-certified physician Seth Sullivan, MD, welcomes adults to his concierge practice in New Canaan, Connecticut, where he provides person-centered care while building relationships with patients and promoting their health and vitality.

As a primary care physician, Dr. Sullivan gives patients a compassionate, trusted person to call when they have health care concerns. And as a concierge provider, he offers a membership-based practice. 

He bills a set fee each quarter, and in return for that fee, patients receive specific services, prompt appointments, electronic scheduling, and direct access to his cell phone number.

In addition to providing physicals and men’s health care, Dr. Sullivan specializes in nutrition, weight loss, and chronic disease management. Patients also appreciate the convenience of onsite labs and urgent care when they need prompt medical attention.

After receiving his medical degree from the University of Kansas School of Medicine in Kansas City, Dr. Sullivan completed his family medicine residency at the University of Missouri Health Care in Kansas City, Missouri.

Dr. Sullivan is board certified in family medicine. He’s proud to be a Castle Connelly Top Doc 2022, with recognition in the Top Doctors New York Metro Area and New York Magazine. He’s also a recipient of the 2016 Vasculitis Foundation’s Recognizing Excellence in Diagnostics award (V-RED).

A hands-on professional who values each patient’s concerns, Dr. Sullivan is well-known for excellence in personalized medical care. To learn more about concierge membership or to schedule an appointment, call the office of Seth Sullivan, MD, or request one online today.