About Dr. Tamara Koss
Dr. Tamara Koss is a board-certified dermatologist practicing at the Schweiger Dermatology Group in Smithtown, Long Island. Dr. Koss specializes in all areas of dermatology, including general, pediatric dermatology and dermatologic surgery. Dr. Koss also has advanced training in cosmetic and laser surgery of the skin. Dr. Koss graduated magna cum laude with highest honors in psychology from Harvard University. While at Harvard, she was elected to the Phi Beta Kappa honor society. Dr. Koss received her M.D. degree with honors from the Yale University School of Medicine, where she was elected to the Alpha Omega Alpha medical honor society. She completed her internal medicine internship at Long Island Jewish Medical Center and her dermatology residency at Columbia University, where she served as chief resident. She then completed a one-year cosmetic dermatology fellowship at the Boston Dermatology and Laser Center, a practice affiliated with Massachusetts General Hospital. Dr. Koss has authored numerous articles in leading medical journals and has coauthored two book chapters. She has lectured at many national dermatology meetings and has performed collaborative research with the Centers for Disease Control and Prevention. Dr. Koss is an attending physician at Columbia-Presbyterian Medical Center and Huntington Hospital. She is a native Spanish speaker.
In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Emblem Health
Medicare
UnitedHealthcare
UnitedHealthcare Oxford
Practice
Schweiger Dermatology Group
Schweiger Dermatology, founded by Eric S. Schweiger, M.D., a Board Certified Manhattan dermatologist, is a state of the art dermatology facility that uses cutting edge medical technology and procedures to effectively treat a multitude of skin disorders. Common skin problems treated include acne, eczema, hair loss, psoriasis, rosacea, skin cancer and warts.Office location
Schweiger Dermatology Group - Smithtown
260 Middle Country Rd, Ste 208, Smithtown, NY 11787
Education and background
Hospital affiliations
- NewYork-Presbyterian / Columbia University Irving Medical Center
Board certifications
- American Board of Dermatology
Education and training
- Medical School - Yale University, Doctor of Medicine
- Long Island Jewish Medical Center, Internship in Internal Medicine
- Columbia University, Residency in Dermatology
- Boston Dermatology and Laser Center, Massachusetts General Hospital, Fellowship in Dermatology
Professional memberships
- American Academy of Dermatology
Awards and publications
- Castle Connolly Top Doctor
- Phi Beta Kappa honor society
- Alpha Omega Alpha medical honor society
- 2024 Castle Connolly Top Doctor
Languages spoken
- English
- Spanish
Provider's gender
Female
NPI number
1013989599
Patient reviews
Overall rating
4.92
Wait time
4.48
Bedside manner
4.94
Your trust matters. All reviews have been submitted by verified patients after seeing the provider. Any content containing private health information is not published.
439 reviews
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ive been there for 4 years. always a great experience. clean. good staff .no complaints. dr is very nice . great job
September 27, 2025Mark V.Verified patient
Dr Koss was thorough and no wait time in waiting room especially since my appointment was in the middle of the day..
August 9, 2025debra M.Verified patient
I have been a patient of Dr. Koss about 20 years with total confidence and gratitude for every decision.
November 3, 2025Initials hidden
Dr Koss could not be kinder nor more thorough. Takes the time to answer questions and gives detailed follow up instructions
January 24, 2024Initials hidden
Dr. Koss is very patient and thorough. She listened and addressed all my concerns.
October 24, 2025Susan E.Verified patient
Dr Koss is thorough and explains everything very well. She is very nice and interested in your concerns
February 26, 2025Robin P.Verified patient
I have been going to Dr Koss for several years and she is a very good Doctor
November 5, 2025Louise M.Verified patient
The doctor was professional, kind and knowledgeable. They medical assistants and front desk personnel were as well.
October 19, 2023Kerry C.Verified patient
Very thorough and Dr. was very nice to deal with. Answered all concerns and questions.
Less than 1 year agoInitials hidden
Dr. Koss is always quick but thorough. Her bedside manner is amazing and she’s one of the best derm doctors I’ve ever seen.
December 22, 2020Colleen J.Verified patient
The first time meeting with a doctor online and she made it very easy. Had great advice and was able to see me right away!
More than 1 year agoJessica I.Verified patientVideo visit
I waited a long time, but Dr, Koss is the ultimate professional! She made me feel at ease and forget that I waited so long!
September 14, 2017Linda K.Verified patient
Schweiger should allow the doctor
More than 10 minutes with their patients.
July 22, 2025Joanne L.Verified patient
Dr. Koss was very helpful in describing my options. She has a lovely bedside manner. I knew I was in capable hands.
May 31, 2022Kathleen F.Verified patient
Easy check in and short wait time.
Doctor friendly and thorough.
November 1, 2025Amy D.Verified patient
I would recommend this doctor. It’s easier to get an appointment through zoc doc than through the doctor’s office.
September 22, 2021Sandra S.Verified patient
She is very professional and listens to your problems. She is so sweet and I would recommend her to all my friends.
December 13, 2017Maria S.Verified patient
Dr Koss was very clear and precise. Been seeing her for years
September 18, 2025Joann D.Verified patient
Friendly staff knowledge and friendly M A Dr always takes time to explain never feel rushed visit always pleasant
November 7, 2016Kathy F.Verified patient
Dr. Koss is an excellent doctor. Very knowledgeable and kid.
September 10, 2025Barbara G.Verified patient
The office did not have a record of my appointment. Please work with your physicians to insure better service.
More than 1 year agoInitials hidden
The doctor was professional and excellent communicator. The staff was friendly and helpful.
March 15, 2024Andrew P.Verified patient
Dr. Koss listens when you speak , answers all my questions and concerns and is very good at being a doctor!
April 10, 2017Deborah K.Verified patient
Though, professional, gave great medical advice and look forward for my next appointment soon.
Thank you!
June 16, 2020Karren K.Verified patientVideo visit
She is very knowledgeable and pleasant. Listens to my questions without rushing my visit with expert care!
April 24, 2017Kathryn L.Verified patient
Dr. Koss was thorough. Ask about any concerns I may have had. I already recommended her to my daughter.
March 23, 2017Helene E.Verified patient
She was amazing didn’t rush at all and answered all my questions, I would absolutely recommend her!!!
June 17, 2020Ranjeet G.Verified patientVideo visit
She heard my concerns and provided a solution. She was very informative and made me feel comfortable.
May 18, 2020Apolonia S.Verified patient
Dr. Koss had a great bedside manner. The appointment was efficent and educational. Highly recommend.
May 1, 2019Katherine O.Verified patient
The best and most thorough total body exam I have ever had. Dr. Koss is wonderful and very caring!
April 27, 2017Bonnie M.Verified patient
The doctor was good but the assistant was "quick" more talk then listening, room for improvement.
More than 1 year agoInitials hidden
Great office and Dr see her every year for my skin cancer screening check.
August 2, 2024Linda O.Verified patient
Dr. Koss is very professional. I felt I was listened to and the recommendations were spot on.
More than 1 year agoJulie D.Verified patient
Always professional, friendly, helpful. Very pleased with Dr Koss and recommend her highly.
More than 1 year agoBarbara C.Verified patientVideo visit
This was a follow up. It went fine. Dr Koss is very through and listens to your concerns.
May 11, 2017Richard I.Verified patient
I enjoyed meeting Dr. Koss and found her to be thoroughly professional and knowledgeable.
March 28, 2017June Z.Verified patient
I absolutely love Dr. Koss. She is approachable , knowledgeable, friendly caring.
December 7, 2016Nancy L.Verified patient
Dr Koss was extremely patient, very knowledgeable and would highly recommend Dr Koss!
May 7, 2020Carol L.Verified patientVideo visit
Courteous and knowledgeable staff very helpful. Nice office
March 16, 2024Initials hidden
Dr kos and her staff are very professional and the best I’ve ever felt with .
December 6, 2017William B.Verified patient
Outstanding, compassionate doctor! Highly recommend her! The best!!! Thanks!
September 23, 2020Roberta S.Verified patient
She was very professional and very good with my daughter. She loved Dr. Koss
October 6, 2017Luann G.Verified patient
Dr Koss is very professional and knowledgeable, highly recommend
June 6, 2023Joanne L.Verified patient
Great doctor with great knowledge. Listens and answers all the questions.
May 1, 2020Steven R.Verified patientVideo visit
Extremely professional and friendly. One of the best doctors I've seen!
More than 1 year agoInitials hidden
Dr. Koss is great. Professional and thorough. Very attentive.
April 26, 2023Kathy V.Verified patient
Very professional, great bedside manner and addressed all my concerns.
More than 1 year agoColleen C.Verified patient
Very nice, very personable. Quick visit which is just what I wanted!
December 23, 2020Hannah W.Verified patient
I was very impressed with the Dr. loss and the entire staff. Thank You
January 31, 2017Diane D.Verified patient
very professional and thorough very happy my internist recommended her
December 8, 2016Kathy C.Verified patient
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