About Dr. Karen Hammerman
Board-Certified Dermatologist, Karen Hammerman completed her undergraduate education at Columbia University, where she graduated with honors in Environmental Biology. She received her medical degree from SUNY Downstate Medical Center, where she also completed her residency in Dermatology. Dr Hammerman also completed a preliminary year in General Surgery and a two year fellowship in wound healing.
Dr. Hammerman enjoys practicing all aspects of Dermatology including cosmetic and medical dermatology for all ages.
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 locations
Schweiger Dermatology Group - Forest Hills (1 of 2)
118-35 Queens Blvd, Lower Lobby Level, Forest Hills, NY 11375
Schweiger Dermatology Group - Garden City (2 of 2)
229 7th St, Ste 105, Garden City, NY 11530
1 of 2
Education and background
Hospital affiliations
- The Mount Sinai Hospital
Board certifications
- American Board of Dermatology
Education and training
- Medical School - State University of New York, Downstate Medical Center, Doctor of Medicine
- State University of New York, Downstate Medical Center, Residency in Dermatology
Awards and publications
- Castle Connolly Top Doctor
- 2024 Castle Connolly Top Doctor
Languages spoken
- English
Provider's gender
Female
NPI number
1083934087
Patient reviews
Overall rating
4.60
Wait time
4.61
Bedside manner
4.69
Your trust matters. All reviews have been submitted by verified patients after seeing the provider. Any content containing private health information is not published.
1813 reviews
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Quick visit and to the point. Minimal wait time. The doctor took care of what I needed and I was in and out of the office.
June 1, 2025Marta R.Verified patient
Dr Hammerman is wonderful. She communicates well and cares. The staff is friendly and the office is clean.
August 4, 2025Josephine B.Verified patient
Always a pleasure. Dr. Hammerman saw me promptly and took time to discuss my concerns.
January 27, 2026Rita C.Verified patient
Office is clean and staff are friendly. Dr Hammerman is very professional and knowledgeable.
November 16, 2025Diana R.Verified patient
Waited over 45 mins…….again…..staff rather cold and unfriendly. Convenient location but we will probably not return.
December 11, 2024Lauren D.Verified patient
Dr Hammerman was on time, communicated, listened and provided excellent care. Highly recommend her !
July 9, 2025Loren G.Verified patient
Dr. Hamerman is a Great doctor! Knowledgable, friendly and caring! I would definitely recommend.
June 30, 2025Andrea S.Verified patient
She good! Quick and was able to give me solution that solve my issues. I would recommend any one to her.
April 4, 2025David D.Verified patient
Amazing beside manners, extremely informative and well versed on the issues I had concerns about.
June 19, 2025Cassie B.Verified patient
My experience was wonderful . The doctor was great . She listened to all my concerns ?? and answered all the questions.
March 25, 2024Jennyfer S.Verified patient
Great doctor. Knew what to do after clearly listening to the issue.
December 28, 2025Rosario P.Verified patient
Great experience — minimal wait time, easy-to-onboard paperwork process, knowledgeable doc and kindness all around.
August 8, 2023Patricia M.Verified patient
Dr Hammerman is the best dermatologist. Shes extremely professional, kind and considerate.
February 19, 2025James D.Verified patient
Got a quick history. Spoke about the issue and recommended some next steps. Very easy virtual visit. Friendly and welcoming.
May 7, 2020Initials hiddenVideo visit
I had a nice experience with this doctor and all my concerns were addressed. I also liked that a treatment plan was made up.
August 29, 2016Anthony D.Verified patient
Dr. Hammerman saw me a few minutes after I arrived for my appointment. Very knowledgeable, and a very nice person, to boot.
September 12, 2017Thomas G.Verified patient
She is professional and explained everything with details.
December 20, 2025Diana R.Verified patient
The doctor was amazing and it was so fast I’ve never been in and out of an office effectively that fast. Thank you!
June 20, 2022Jamilah M.Verified patient
She is very knowledgeable and professional. She always remembers her patient's history. My skin is getting much better.
More than 1 year agoInitials hiddenVideo visit
It was a really nice experience; the office is beautiful and the staff and physician were professional and so kind.
More than 1 year agoInitials hidden
The Dr. quickly assessed my situation and took care of right during the appt. She was reassuring and knowledgeable.
May 5, 2020Linda B.Verified patient
It was my first time doing a video call to the doctor I felt comfortable confident and I had a very great experience
April 2, 2020Candice K.Verified patientVideo visit
Great experience. Clean office. Doctor was very friendly and I would recommend her to friends and family.
More than 1 year agoInitials hidden
The wait time was about 30 minutes. The actual meeting with a dermatologist was about 7 minutes max. Very fast.
January 9, 2022Patrick K.Verified patient
she was proffessional and courteous. examined me but no results yet. had a cortizone shot and antibiotic prescibed
August 8, 2018Francisco M.Verified patient
I chkd in on ipad and turned around to be escorted right into the Drs office. No wait! Nice staff,clean office
January 19, 2021Rochelle G.Verified patient
Saw Shivani Thakker for my visit. Wonderful person. Was knowledgeable, kind and thorough. Highly recommend her!
June 21, 2021Initials hidden
Karen is extremely knowledgeable and helpful. She has a great personality and very friendly!
May 13, 2024Diane C.Verified patient
My visit was very pleasant. The provider listened to my concerns and explained and treated my problems.
April 20, 2023Cristina A.Verified patient
Excellent service ?, This is my third appointment with the same doctor.?
May 13, 2025Oksana B.Verified patient
Dr. Hammerman was very efficient and she had impeccable bed side manner. Extremely informative and very bright.
March 15, 2016Kristen G.Verified patient
Dr. Hammerman was most knowledgeable, professional, and had a very nice manner as well. I highly recommend her!!
September 15, 2014Initials hidden
Dr. Hammerman was kind and thorough. Her staff was very nice and helpful.
More than 1 year agoInitials hidden
They gave me the help I needed I recommend this place to anyone who needs to get skincare
June 9, 2024Justin K.Verified patient
Everyone was pleasant and helpful and timely. I was very satisfied with my visit.
November 13, 2024paul K.Verified patient
I did not know the doctor does not attend patients and it’s the PA. PA was rude and completely uninterested.
May 16, 2018Nishat B.Verified patient
Amazing staff! A great experience. Everyone was kind and lovely and I will be a returning patient!
June 28, 2023Ashley L.Verified patient
Answered all my questions thoroughly and was patient. Implemented a plan to help. Let's see if it works.
March 31, 2021Isaac A.Verified patient
It was my first time but so far so good just waiting to see if what happens from here on...hopefully good
June 18, 2015Carolina E.Verified patient
State of the art facility with almost no wait time and great service. I highly recommend this office.
More than 1 year agoDavid K.Verified patient
Very good bedside manner. Jessica was great as well.
September 17, 2025Karen B.Verified patient
I appreciate her listening to my concerns and the fact that she gives me options on which route to take.
December 12, 2017Jessica M.Verified patient
Hizo su trabajo.. pero esperaba mas consejos para cuidar mi piel ya que mi familia hay cancer de piel.
February 24, 2020Initials hidden
She was ok , not very friendly , felt rushed.
Had more questions but felt like i was bothering her .
More than 1 year agoInitials hidden
Extremely polite staff the doctor was excellent I will recommend them to friends and family
April 5, 2023Ricardo S.Verified patient
Very clean place nice ppl and no wait Time loved that she talked me through everything she was doing
September 14, 2017Sharese G.Verified patient
Very polite, professional, relaxed doctor who addressed all of my concerns. Her PA is also very nice.
February 9, 2016Initials hidden
The Doctor was very understanding about my situation and was knowledgeable on the subjects.
April 21, 2023Norma V.Verified patient
A wonderful doctor, very very thorough.
Would recommend to family and friends
July 29, 2024Michele K.Verified patient
Dr. Hammerman was great!
She answered all my questions and had great recommendations for my skin.
July 11, 2016Beatriz M.Verified patient
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