Medical Providers

Walk-in Dermatology > Medical Providers

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Whether you have concerns about a specific dermatologic condition or are interested in a cosmetic procedure, our board-certified dermatologists, physician assistants and friendly medical staff are committed to keeping you healthy and giving you the confidence to look and feel your best.

Dr. Stacey Brisman

Stacey Brisman, MD, FAAD

Medical Director, Dermatologist

Board-certified dermatologist and member of the American Academy of Dermatology, Women's Dermatology Society and Skin Cancer Foundation. B.S. from the University of Michigan; Doctor of Medicine from Emory University School of Medicine; internship in Internal Medicine at Beth Israel Deaconess Medical Center; Dermatology residency at New York Presbyterian Hospital, Columbia University Medical Center. Published in Journal of the American Academy of Dermatology, Dermatologic Surgery and Pediatric Dermatology.

Dr Evelyn Greco

Evelyn Greco, DO, FAAD


Dr. Greco is a board-certified dermatologist who obtained her medical degree from New York College of Osteopathic Medicine. She completed her dermatology residency training at St. John’s Episcopal Hospital where she served as chief resident. She is currently a member of the American Academy of Dermatology, Women’s Dermatology Society, and the Hellenic Medical Society. Dr. Greco specializes in comprehensive medical and cosmetic dermatology and treats a wide variety of skin conditions including acne, rosacea, eczema, and psoriasis. She also performs full body skin exams and is passionate about educating her patients on the importance of sun protection.

Melissa Sanoff Wiener

Melissa Sanoff-Wiener, RPA-C

Physician Assistant

Melissa is a Physician Assistant certified through the National Commission on Certification of Physician Assistants. She has been treating dermatology patients for all their skin care needs since 2001. Melissa received her undergraduate degree from Binghamton University and completed her Physician Assistant studies at Weill Cornell Graduate School of Medical Sciences. Melissa treats all her patients like family, and greets them with a warm smile. She treats a wide array of skin conditions and diseases, ranging from acne to eczema to skin cancer. Melissa is a member of the American Academy of Physician Assistants and the New York State Society of Physician Assistants.

Robinder Singh

Robinder Singh, MD, FACS

Plastic Surgeon

Dr. Robinder Singh is double board certified by the American Board of Plastic Surgery and American Board of Surgery. He is a member of the American Society of Plastic Surgeons and the Aesthetic Society. Dr. Singh also holds a certificate from the American Head and Neck Society. Dr. Singh graduated Magna Cum Laude from the University of Maryland and was a member of the Phi Kappa Phi Honors Society. He was also ranked first in his graduating class and inducted into Iota Epsilon Alpha, an International Medical Honors Society at St. George’s University School of Medicine. He completed general surgery training at the State University of New York at Buffalo, where he served as chief resident, and conducted his post-graduate training at Roswell Park Cancer Institute, where he completed a Head and Neck Oncology and Reconstructive Surgery fellowship. He went on to complete an additional fellowship in Plastic & Reconstructive Surgery at The Medical University of South Carolina, where he served as Chief Fellow. Dr. Singh performs dermatologic surgeries at Walk-in Dermatology as well as cosmetic and reconstructive surgeries at his other offices in Great Neck and Lynbrook.

Mary Valinotti

Mary Valinotti, PA-C

Physician Assistant

Mary Valinotti received her master’s degree from the Physician Assistant Program at Marist College. She has specialized in general dermatology since 2019 and has worked with some of Long Island’s most prominent dermatology groups. Mary has specialized in many dermatological conditions including atopic dermatitis, psoriasis, acne, rosacea, melanoma and non-melanoma skin cancers and associated surgical procedures. She is an active member of the Society for Dermatology Physician Assistants.

Certifications and Professional Memberships

Certifications and Professional Memberships