Michael Fastenberg, M.D.
Dermatology Physician · Smithtown, NY
Michael Fastenberg, M.D. is a dermatology physician with a practice address in Smithtown, New York, and NPI 1073735593, issued on May 3, 2007. Check the license (New York 252150-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Michael Fastenberg
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- 252150-1 NY
2006-01943 NC
Self-reported in NPPES; status is on the state search - Practice location
- 260 Middle Country RD, Smithtown, NY 11787
- Phone
- (631) 863-3223
- Enumerated
- May 3, 2007
- Record last updated
- Jan 26, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (631) 863-3334
- Medicare enrollment
- Enrolled (PECOS I20090909000436); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 1,211 in New York → Look up another NPI →
Also registered at 260 Middle Country RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eileen Bishop, M.D.Specialist1356349708
- Jennifer Cassidy, FNPNurse Practitioner1053579524
- David Dagate, M.D.Specialist1790784395
- Ezra Deutsch, M.D.Specialist1356349716
- David Farr, M.D.Specialist1407854912
- Thomas Gee, RPHPharmacist1396077335
Verify Michael Fastenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 252150-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% more Medicare Part D claims than the average dermatology physician in 2024
987 Medicare Part D claims for 421 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Ketoconazole275 claims
- Triamcinolone Acetonide133 claims
- Clobetasol Propionate52 claims
- Hydrocortisone52 claims
- Metronidazole36 claims
- Mupirocin35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 77.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $56,879.88
287 payments; by number, the most common kind was food and beverage; the largest payer was Arcutis Biotherapeutics, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Schweiger Dermatology PLLCSmithtown, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Fastenberg among 1,211 dermatology physician records in New York
Michael Fastenberg, M.D. is one of 1,211 dermatology physician records with a practice address in New York. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2005 · median 2004 among the 880 with a school on file
- Record last updated2011 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in New York
There are 1,211 dermatology physician records in New York.
All 1,211 in New York → Every provider in Smithtown → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Snehal Amin, M.D.Smithtown, NY 117871376585539
- Tamara Koss, MDSmithtown, NY 117871013989599
- Faith Leffel, RPA CSmithtown, NY 117871205901683
- Lawrence Lieblich, MDSmithtown, NY 117871619985462
- Carina Perrotta, R P.A.-CSmithtown, NY 117871699071159
- Donna Serure, D.O.Smithtown, NY 117871356494231
- Barry Solomon, MD, JD, FAADSmithtown, NY 117871740242031
- Jennifer Defazio, MDHauppauge, NY 117881255443925
Common questions
What is Michael Fastenberg, M.D.'s NPI number?
Michael Fastenberg, M.D.'s National Provider Identifier (NPI) is 1073735593, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Fastenberg, M.D. located?
The NPPES record lists a practice address at 260 Middle Country RD, Smithtown, NY, 11787. Phone: (631) 863-3223. Providers update this record themselves, so call before visiting.
How can I verify Michael Fastenberg, M.D.'s license?
NPPES lists New York license number 252150-1, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Fastenberg, M.D. prescribe under Medicare Part D?
In 2024, Michael Fastenberg, M.D. had 987 Medicare Part D claims for 421 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Michael Fastenberg, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.