Welcome to Walk-in Dermatology

Walk-in Dermatology combines the convenience of urgent care with the same services you expect at any dermatology office.

Are you in need of medical treatment? Considering a cosmetic procedure? No problem, we have you covered.

Learn More

Board-Certified Dermatologists

Convenient Location

Same-Day Appointments

We’re committed to keeping you healthy and giving you the confidence to look and feel your best. Walk-in Dermatology is improving the quality of patient care by providing timely treatment and using the latest technologies available.

Medical Treatment

We offer expert evaluation and treatment for all medical dermatologic issues. If you’re concerned about anything related to your skin, hair or nails, we’re here for you.

Cosmetic Procedures

Whether you’re looking for Botox, fillers, laser therapy or a skin care regimen, our board-certified dermatologists will help you look your best with the latest cosmetic procedures.

State-of-the-Art Technology

We use the most current technologies available in every aspect of what we do. You’ll notice the difference from the moment you walk into our modern office.

View All Services

The Doctor is Ready to See You Now

Office

Walk-in Dermatology Greenvale Main Entrance in rear

Conveniently located next to the LIRR
(Greenvale Station)

Visit our first Long Island location whenever it suits your schedule. Our facilities are designed to meet your needs, on your time.

Schedule online, on the phone, or by walking in today. Our friendly staff and board-certified dermatologists are ready to see you now.

Book Your Appointment

Doctors

Stacey F. Brisman, MD, FAAD

Medical Director

Board-certified dermatologist and member of the American Academy of Dermatology, Women’s Dermatology Society and Skin Cancer Foundation. B.S., University of Michigan; Doctor of Medicine, 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.

Louis Siegel, DO, FAAD

Board-certified dermatologist affiliated with St. John’s Episcopal Hospital-South Shore; medical degree from Touro College of Osteopathic Medicine; Dermatology residency at St. John’s Episcopal Hospital; diplomat of the American Board of Dermatology; Bachelor of Science from University of Maryland; specializing in comprehensive medical, surgical, and cosmetic dermatology including light-based therapies.

Kumar Sukhdeo, MD, PhD, FAAD

Member of the American Academy of Dermatology, American Hair Research Society, and Cicatricial Alopecia Research Foundation. B.S. from Duke University; Doctor of Medicine and Doctor of Philosophy from Case Western Reserve University; internship in Internal Medicine at the University of Chicago Hospital; dermatology residency at NYU Langone Health. Published in Journal of American Academy of Dermatology, Proceedings of the National Academy of Sciences, Cell, and Cancer Cell.

Aesthetician

Florentina Haffey

Licensed Aesthetician

Licensed Aesthetician since 2002; trained in San Dona di Piave, Italy and in the United States at Long Island Nail & Skin Care Institute and the Institute for Laser Medicine. Florentina served as a Licensed Aesthetician in Italy before moving to New York, where she has served as Head Aesthetician at several medical spas and wellness centers across Long Island.

Insurance Plans Accepted

View full list of accepted insurance