Isaac Adam Gendelman, MD
Surgery Physician · Boston, MA
Isaac Adam Gendelman, MD is a surgery physician with a practice address in Boston, Massachusetts, and NPI 1407484843, issued on Mar 31, 2020. Check the license (Massachusetts 284131, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Isaac Adam Gendelman
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 284131 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (617) 636-5000
- Enumerated
- Mar 31, 2020
- Record last updated
- Jun 15, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 1,003 in Massachusetts → Look up another NPI →
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Aalberg, MD, MPHSurgery Physician1326788027
- Omer Abbak, PHARMDPharmacist1114500337
- Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
- Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
- Ahmad AboalfarajSurgery Physician1538517651
- Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250
Verify Isaac Adam Gendelman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 284131Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average surgery physician in 2024
22 Medicare Part D claims for 15 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 11 claims were for opioids.
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.
Industry payments in 2024: $450.05
4 payments; by number, the most common kind was food and beverage; the largest payer was ShockWave Medical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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.
Isaac Adam Gendelman among 1,003 surgery physician records in Massachusetts
Isaac Adam Gendelman, MD is one of 1,003 surgery physician records with a practice address in Massachusetts. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2020 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
443 surgery physician records list a practice address in Boston
They are 443 of the 41,865 NPPES records with a practice address in Boston, and 1,003 surgery physician records in Massachusetts.
All 1,003 in Massachusetts → Every provider in Boston → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Ghada Al Mubarak, M.D.Boston, MA 021111407034911
- Nada Alkaki, M.D.Boston, MA 021111316268790
- Nora AlmanaBoston, MA 021111114248770
- Heba Almutairi, M.D.Boston, MA 021111205120680
- Timothy Curran, DPMBoston, MA 021111063447597
- Martin Goodman, M.D.Boston, MA 021111992846091
- Monica Goodstein, M.D., M.P.H.Boston, MA 021111245525120
- Roger Graham, M.D.Boston, MA 021111952358681
Common questions
What is Isaac Adam Gendelman, MD's NPI number?
Isaac Adam Gendelman, MD's National Provider Identifier (NPI) is 1407484843, issued on Mar 31, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Isaac Adam Gendelman, MD located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-5000. Providers update this record themselves, so call before visiting.
How can I verify Isaac Adam Gendelman, MD's license?
NPPES lists Massachusetts license number 284131, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Isaac Adam Gendelman, MD prescribe under Medicare Part D?
In 2024, Isaac Adam Gendelman, MD had 22 Medicare Part D claims for 15 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
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.