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Dr. Michael Fastenberg, MD, FAAD

Dermatologist

Smithtown, NY

About Dr. Michael Fastenberg

Long Island native Dr. Michael Fastenberg is a board-certified dermatologist at Schweiger Dermatology Group in Smithtown, New York. Dr. Fastenberg attended Jericho High School and received his undergraduate degree from Duke University (cum laude). Dr. Fastenberg returned to Long Island after working and living in various places around the world. He received his medical degree from the Stony Brook School of Medicine (Alpha Omega Alpha) and completed his internship in internal medicine at Winthrop University Hospital in Mineola. He then completed his dermatology residency at the University of North Carolina Hospitals in Chapel Hill, NC. He has performed research in biochemistry, cell biology and dermatology, has been published in peer reviewed journals and has presented at local and national meetings. Dr. Fastenberg specializes in general adult, pediatric and surgical dermatology as well as cosmetic dermatology, including Botox, fillers and laser procedures. Dr. Fastenberg is on faculty at St. Catherine of Siena Medical Center in Smithtown, NY.

In-network insurances

  • 1199SEIU
  • AARP
  • Aetna

Specialties

  • Dermatologist

Practice names

Board certifications

  • American Board of Dermatology

Education and training

  • Medical School - State University of New York, Stony Brook, Doctor of Medicine
  • Winthrop-University Hospital, Internship in Internal Medicine
  • University of North Carolina, Residency in Dermatology
  • Duke University (Bachelor’s)

Professional memberships

  • American Academy of Dermatology

Zocdoc awards

See you again
Speedy response

Languages spoken

  • English

Provider's gender

Male

NPI number

1073735593

Dr. Michael Fastenberg's office location

Schweiger Dermatology Group

Smithtown

260 Middle Country Rd, #208

Smithtown, NY 11787

Patient reviews for Dr. Michael Fastenberg

All reviews have been submitted by patients after seeing the provider. For more information, check out our Patient Knowledge Base.
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The MD was very informative and answered all my questions and concerns.
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Very short wait time and Dr. Fastenberg came in right away. We had a nice conversation during the exam and he is very personable.
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Was great and was a very fast visit . Everyone was very nice
Less than 1 year ago
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As always, Dr. Fastenberg was terrific. I see him on a regular basis and would not see anyone else. He is the best!
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Visit was professional and friendly. Addressed everything I needed to be treated for.
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I was told that the lines around my mouth would be gone with the injections I received two weeks ago. The lines are still there a little better but still there. The person taking my pictures then wanted to get meready for more injections and more money. I feel like I paid a lot of money there and did not get the results I was told I would get. I was not offered a refund or any option without paying more money to get the results I was told I would get. Will never recommend or go back there!
Source: Zocdoc
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Dr Fastenberg is a very thorough physician. He also listens to what you are saying and advises. He didn't rush through the visit to go to the next patient.
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Very professional and thirough
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Very pleasant and thorough. He seemed a bit rushed but the waiting room was full so I could understand.
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Nice Doctor Seem Very Rushed .
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he seemed rushed today
More than 1 year ago
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I am a regular patient of Dr. Fastenberg and think he is terrific. Would follow him anywhere!
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Very personable and attentive to your comments.
Source: Zocdoc
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was greeted as soon as I entered the office, witch was spotless, well light and plenty off seating. the women behind the counter were courteous and pleasant. was taken onto the exam room and only waited 30 seconds for the DRto see. his assistant fully explained the dr's orders and sent my prescription immediately . this office is a well run machine. very professional . the only thing I did not like was there insistence on keeping a record off my bank card. that is what is my not giving a 5 star rating.
Source: Zocdoc
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Dr. Fastenberg is a competent, knowledgeable, and sensitive person. He informs his patients of all of their options by making them aware of the various treatments. He is friendly and reassuring. I would highly recommend him. Regina Goldstein
Source: Zocdoc
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I am a regular patient of Dr. Fastenberg and think he is terrific
Source: Zocdoc
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He always has a great demeanor and naturally puts you at ease. Clearly he knows his stuff and gets right to the heart of things. Because he is such a pleasure that is why I have sent him 3 other patients.
Source: Zocdoc
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Very thorough
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Doctor Fastenberg was very professional and pleasant, and put my mind at ease right away. He explained everything he was doing before hand, and I felt incredibly confident in his ability.
Source: Zocdoc
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Dr. Fastenberg is very nice, knowledgeable and has a great bedside manner. He's not an alarmist and has put my mind at ease on several occasions. I have, and will continue to recommend him to friends and family.
Source: Zocdoc
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Doctor Fastenberg, is a highly competent professional, with a pleasant and reassuring personality, always with a smile. His medical assistants are equally as pleasant, always presenting themselves in a professional manner. Many thanks for their professional service.
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He and his staff are friendly and professional!
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Dr. Fastenberg is wonderful; caring, personable and professional. Sad that we have to post "poll comments" in this era.
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I have taken my daughter to see Dr. Fastenberg for a couple of years now. He is extremely knowledgeable, kind and very funny. No matter what our concerns, he has always been able to resolve them.
Source: Zocdoc
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I am a regular patient of Dr. Fastenberg. He is terrific!
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I'm not from around here and have just recently moved to the area. I have gone to numerous dermatologists and not one has been as good as him! When I first was there he had 5 people in the room withhim, teaching them and getting input! I have had a great experience so far with him and am happy to know that I have found my go-to guy!
More than 1 year ago
Source: Zocdoc
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I was glad to see my cut was healing and gave advice in what to do w her. Zap a brown spot by eyebrow awesome . Will decide on how the cysts gel in head to call and get them removed.
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Doc Fastenberg was the best! He was kind and really was very knowledgeable ! Best doc around !
More than 1 year ago
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Dr. Fastenberg and his assistant Rita were extremely professional while being friendly, respectful and making me feel very comfortable. l highly recommend them and am happy to be his patient.
More than 1 year ago
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He's very personable and knowledgable. Explains things so you can understand.
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Quick, Kind, competent and professional.
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The doctor was a nice person and seemed to care about educating his assistant; however, as a patient I felt very rushed and the diagnosis of my condition left me feeling skeptical at best. After showing him an irritation on myskin, he told me a lot of it could be one thing or it could be another, with no real clarification other than googling images of other people's irritations. I left with a sample of a cream and a prescription that might or might not help, "but it's good to have in the house maybe if someone gets poison ivy". After going to the pharmacy that the Doctor recommended because he said my pharmacy would not have this cream in stock, I was told that with my insurance it would be hundreds of dollars to fill so of course I left the pharmacy. I left the doctor's office feeling worse about my slight skin irritation than when I went in, partially due to the fact that the doctor was throwing grand diagnosis around like I was in an episode of house, but also because for the 2 hours after I left the office, I was trying to call to change the pharmacy that my prescription would be filled at to my own, only to repeatedly be hung up on, transferred to a random mans cell phone who has no affiliations with the doctors office, and on more than one occasion be transferred to the Doctor voicemail box which is full and can not receive messages at this time. When I finally spoke to someone, they told me they were going to have a medical assistant call me back to help me within the hour, it has been over 4 hours and I am now confident I will not be receiving a call back. To say this office failed to meet my expectations is an understatement at best. I am appalled at the treatment I received both by the doctor and the reception staff, and will NOT be going back to this practice ever again.
Source: Zocdoc
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Good but a little rushed.
More than 1 year ago
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Dr. Fastenberg is terrific. Very professional and remembers all my information between visits. I recommend Dr. Fastenberg to anyone looking for a dermatologist
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Totally amazed at his reassuring manor the Accuracy of treatment/ diagnosis. He afforded me the time to not only explain but also reviewed my diagnosis with me on the computer, answered all of my questions/ explains the treatment in detail and future treatments and follow-ups.
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He was great- smart and engaging. Highly recommend
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Staff and Doc were terrific....
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Very caring and thorough
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Very professional and quick.
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He followed through on past treatments as well as new problems I presented. His exam was quick but he listened to me during the time I was there to see him. I feel that I got his full attention during my visit.
Source: Zocdoc
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My visit was very pleasant indeed. Dr. Fastenberg is my favorite dermatologist ever. I'd recommend to everyone.
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He is a caring Dr. I would recommend him to everyone.
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Great Doctor. Wouldn't go to anyone else.
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All good
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My visit was quick and my concerns were addressed efficiently! An overall pleasant Doctor visit!
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Dr. Fastenberg is a wonderful Dr., and I would HIGHLY recommend him.
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I and my family have known Dr. Peredo since our sons played soccer together in the same team. Now I'm told because I haven't been to the office in over three years I'm a new patient I don't like that atall I feel like the practice which was a family practice is now a faceless conglomerate
Source: Zocdoc
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Dr r Fastenbefg was very thorough and professional. I went in with several problems and he took the time to address them all. The treatments that he has prescribed after my first visit really helped. I am very pleased that hetakes the time to listen . I am very happy that I have a doctor that I trust
Source: Zocdoc
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Everything was great! This was my first time in the office, and after the paperwork was done, it was less than 5 minutes before I was called in. Then when I was in the exam room, I was seen right awayby the nurse to go through some info. Two minutes later a PA came in, and less than five minutes after he left, he came back with the Dr to discuss course of treatment. Overall a highly pleasant experience, not to mention there is a pharmacy in the building so I didn't have to make any additional stops on my way home.
Source: Zocdoc
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Great experience overall
Source: Zocdoc
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