Fastenberg, Michael

  • 2020 - 2025

Michael Fastenberg, MD

Fastenberg, Michael
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.

About Michael Fastenberg, MD

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.

  • 2020 - 2025

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.

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About Schweiger Dermatology Group

Founded by Dr. Eric Schweiger in 2010, Schweiger Dermatology Group began as a single office in Midtown Manhattan with a mission to deliver high-quality dermatologic care without long waits. As demand grew, so did the practice. Today we have over 120 locations across 8 states with more than 400 of the nation's leading providers and were ranked as the number one practice nationally in cosmetic and reconstructive care by Castle Connolly. In 2023, we broadened our expertise by integrating allergy care into our services. We remain committed to offering exceptional medical, cosmetic, and surgical dermatology as well as comprehensive allergy services, ensuring patients receive expert care in a modern, state-of-the art environment.

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