Ranked guide · Long Island, New York
The 10 Best Dermatologists in Long Island (2026)
The 10 dermatology practices in Long Island with the strongest public record, out of the 17 we list, ranked by Google rating weighted by how many reviews back it. Paid placement never changes this order.
- 1
Open SaturdaysMDCS Dermatology: Medical Dermatology and Cosmetic Surgery
353 Veterans Memorial Hwy #101, Commack, NY 11725
- 2
Open SaturdaysMDCS Dermatology: Medical Dermatology and Cosmetic Surgery
225 W Montauk Hwy #3, Hampton Bays, NY 11946
- 4
MDCS Dermatology: Medical Dermatology and Cosmetic Surgery
309 E Main St #201, Smithtown, NY 11787
- 5
Open SaturdaysMDCS Dermatology: Medical Dermatology and Cosmetic Surgery
516 Old Country Rd, Plainview, NY 11803
- 6
- 7
Open SaturdaysSchweiger Dermatology Group - Smithtown
260 Middle Country Rd #208, Smithtown, NY 11787
Photos from each practice's Google Business Profile.
Medical vs. cosmetic dermatology
Dermatologists handle two kinds of visits. Medical dermatology covers skin checks, changing moles, acne, eczema, psoriasis, and rashes; cosmetic dermatology covers lasers, injectables, and skin-quality treatments. Most practices above do both, but book the right visit type, and see a dermatologist promptly for any mole that is changing in size, shape, or colour, a spot that bleeds or won't heal, or a new growth. Those are screening visits, not cosmetic consultations, and they should never wait behind one.