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Dr. Michael Fastenberg, MD, FAAD

Dr. Michael Fastenberg, MD, FAAD

Dermatologist
44 W Main St, Patchogue, NY
4.75
“Excellent Dr Fastenberg was extremely Professional and knowledgeable conveying confidence as he listened to my medical issues and concerns. Dr Fastenberg without any hesitation, communicated his medical plan of action to resolve my medical issues. Dr Fastenberg took the time to make sure that I understood and that I agreed with his medical solution. I have been a patient of Dr. Fastenberg's for many years and I am always warmly greeted by the Doctor and his entire staff. I recommend Zocdoc for making appointments and I highly recommend Dr Fastenberg ”
FREDERICK H.December 5, 2025
Excellent wait time
94% of patients waited less than 30 minutes
New patient appointments
Appointments available for new patients

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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

99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Emblem Health
Medicare
UnitedHealthcare
UnitedHealthcare Oxford

Areas of expertise

This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Rash
Psoriasis
Benign or precancerous skin growths
Acute skin infection
Rash
Psoriasis
Benign or precancerous skin growths
Acute skin infection

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.
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Office locations

Schweiger Dermatology Group - Patchogue (1 of 5)
44 W Main St, Patchogue, NY 11772
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Schweiger Dermatology Group - Smithtown (2 of 5)
260 Middle Country Rd, Ste 208, Smithtown, NY 11787
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Schweiger Dermatology Group - Great Neck (3 of 5)
825 Northern Blvd, Ste 300, Great Neck, NY 11021
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Schweiger Dermatology Group - Rykowski Lane (4 of 5)
28 Rykowski Ln, Middletown, NY 10941
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Schweiger Dermatology Group - Mattituck (5 of 5)
13405 Main Rd, Mattituck, NY 11952
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1 of 5

Education and background

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

Awards and publications

  • Castle Connolly Top Doctor
  • 2024 Castle Connolly Top Doctor

Languages spoken

  • English
  • Spanish

Provider's gender

Male

NPI number

1073735593

Patient reviews

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