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South Nassau Dermatology has served as a comprehensive skin care center for over 30 years. Our team of 8 board-certified physicians is dedicated to treating all skin conditions with the latest in medical, surgical, and laser techniques. What has always set South Nassau Dermatology apart from other medical practices is the personalized care we provide to our patients.

We hope that our website helps you learn more about the many cosmetic and medical procedures we provide. We offer various dermatological services including Botox, laser hair removal, Mohs Surgery for skin cancer, and more.
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Our physicians run the Dermatology Department at South Nassau Communities Hospital. They also serve as professors at New York University Medical Center, SUNY Downstate Medical Center. At these major medical centers, they serve as faculty in teaching dermatology residents the basics of dermatology as well as the latest medical and aesthetic treatments.
Michael S. Cohen, MD has been a board certified dermatologist who has been in practice since 1994. He attended the six-year medical education program at Boston University School of Medicine. He performed his internship in internal medicine at Mount Sinai Hospital in New York City. He trained in dermatology at UCLA Medical Center in Los Angeles, California.
Mohs Micrographic Surgery performed by Dr. Michael S. Cohen and Dr. Sari B. Weinstein is a highly specialized treatment for the total removal of skin cancer. This method differs from all other methods of treating skin cancer by the use of Complete Microscopic Examination of all the tissues removed surgically as well as detailed mapping techniques to allow the surgeon to remove all the roots and extensions of the skin cancer. The procedure begins after the skin is injected with a local anesthetic to make it completely numb.
Are you one of the many Americans today who is unhappy with their skin? One of the primary reasons so many of us are tired of what looks back at us in the mirror every day is normal aging, as its effects often leave us with unwanted wrinkles, age lines, and creases where smooth, beautiful skin used to be.
Reviews (10)
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Sara Siegel
Jun 10, 2022
I commend Dr. Sari Weinstein and her nursing and reception staff. Top marks for excellent care and courtesy. Couldn't be happier for the best in routine visits as well as handling delicate Moh's surgery.
Niesha Blair
Jun 09, 2022
In a country of possibility & equality racism still exists & will never get better. Today I experience such first hand. Was at your office @ 2:00 pm for a @2:10 pm appointment. Patients come, went, even those who had @3:00pm appointment got through and leave while I'm sitting there like i don't exist all because I was the only black person in that room. Went to enquire from the nurse only to be told the doctor running late & I'm next (last)yet still every patients after me left before me.

When I asked why that guy that got a 3:00 pm appointment went in before me the nurse had no rational answer for me. Your office don't need black patients u should state such than to have us at ur clinic disrespected. By the way when paying for a service it don't have white money nor black money. SAME MONEY, SAME BLOOD IN OUR VEINS.
Arlene Turk
Jan 10, 2022
I have been a patient at South Nassau Dermatology for over 30 years and have had very positive experiences. That is until today. I was seen by Dr Silverman whom I have been to many times before. The reason for my visit today was for a full body skin cancer check, and growths all over my body. Due to Covid, as required, I wore a mask as did Dr Silverman. However, his mask was not medical grade did not fit properly, nor was he wearing a face shield or gloves.

In any case Dr. Silverman gave me a quick glance only. During previous cancer screenings he went as far as checking between my toes but this time he didn't even touch me including not looking anywhere that was covered up. Every other time, my entire body was exposed as to get a proper look. I told him that I had growths on my face primarily along my forehead hair line and the back of my neck.

He replied" I am not going anywhere near your face because I don't want to catch Covid from you." I was masked, vaccinated and boosted. He prescribed Acne medication and facial moisturizer without having seen my face. I do not have acne and he told me on a previous visit NOT to moisturize. I am writing this rant of a review because it is beyond my comprehension that a doctor would open his office, see patients, bill and not even come close to doing thir job. I
Richard McCaw
Aug 08, 2021
Dr Russell Cohen is one of the best physicians in the field of medicine. When it comes to knowledge and treatment, he is second to none. His passion and fierce conviction toward wellness is personified during each visit. Richard McCaw treatment
Amanda Kessler
Apr 17, 2020
Story time. I called to make an appointment because I ran out of my prescription. The lady on the phone told me the doctor would be back in on the 6th and then suddenly told me she could squeeze me in on the 4th. She gave me very confusing information and then HUNG UP on me. This made me very angry, however I was glad I at least had an appointment.

Or so I thought! I was supposed to come in this morning, but I called beforehand to confirm since the whole thing seemed sketchy. I'm pretty sure the same woman picked up the phone and she told me I did NOT have an appointment. Although I like my doctor, I may have to switch offices due to this experience.
John W.
Apr 13, 2020
I am a regular patient at this practice. I have seen multiple doctors here over the years and they are all great. Very knowledgeable and kind. There can be a wait at times, but that is to be expected. I am never rushed once in a room-they make sure to take their time with me and answer all my questions. Would definitely recommend this practice.
Michael Dillon
May 12, 2019
The worst doctors office I have ever had to deal with (and we've all dealt with a few). So unbelievably unreliable. They never answer the phone and when they do they keep you on hold for an eternity. My pharmacy can never get in contact with them either. Everything is a massive production with this dermatology office. Would not recommend to anyone who values their time.
Marcy D'Ambrosio
May 08, 2019
Love Dr. Kornreich, caring, compassionate doctor. He will always call personally good or bad news. The staff is always friendly. My family has been going for years.
M. Rojas
May 05, 2019
I have been a patient of Dr. Kornreich for years. The last 2 appointments have been impossible to see him. I call and I'm told he's not available for weeks. I've seen 2 other doctors my last 2 visits but my last visit sent me on a hunt for a new doctor. The wait time is always ridiculous but this last visit really did it. I was called to the back and asked to enter a room where a lady was still getting dressed.

I was brought back to the waiting room where I was forgotten about. They were very apologetic when I was finally called. The doctor spent a whole 30 seconds with me. I'm looking for a new doctor they are too busy for you and I deserve to have the undivided attention of my provider
Scott Gerstner
Nov 18, 2018
Waited over 1 hour before I left without seeing doctor. When I went to receptionist and asked about why so backed she couldn't answer me. Definitely over book time slots, but they need to keep the patient informed not tell them they don't know why or didn't realize. Need to rethink about going back here.