Frank N. Finkelstein, M.D.
Internal Medicine Physician · Cambridge, MA
Frank N. Finkelstein, M.D. is an internal medicine physician with a practice address in Cambridge, Massachusetts, and NPI 1528021425, issued on Apr 11, 2006. Check the license (Massachusetts 45776, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Frank N. Finkelstein
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 45776 MA
AF45776 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1611 Cambridge St, Cambridge, MA 02138
- Phone
- (617) 661-5100
- Enumerated
- Apr 11, 2006
- Record last updated
- Oct 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 0107387 MA
- Entity
- Type 1 · individual
Also registered at 1611 Cambridge St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Frank N. Finkelstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 45776Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
12 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
300 internal medicine physician records list a practice address in Cambridge
They are 300 of the 5,145 NPPES records with a practice address in Cambridge, and 6,825 internal medicine physician records in Massachusetts.
All 300 in Cambridge → All 6,825 in Massachusetts → Every provider in Cambridge →
Other internal medicine physician records in Massachusetts
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- Bassima Abdallah, MDBoston, MA1912327305
- Maya Abdallah, MDBoston, MA1861854937
- Samah Abdallah, MDBrighton, MA1730814971
- Omar Abdel-Wahab, M.D.Boston, MA1023042777
- Mohab AbdelhalimBoston, MA1871388496
Common questions
What is Frank N. Finkelstein, M.D.'s NPI number?
Frank N. Finkelstein, M.D.'s National Provider Identifier (NPI) is 1528021425, issued on Apr 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frank N. Finkelstein, M.D. located?
The NPPES record lists a practice address at 1611 Cambridge St, Cambridge, MA, 02138. Phone: (617) 661-5100. Providers update this record themselves, so call before visiting.
How can I verify Frank N. Finkelstein, M.D.'s license?
NPPES lists Massachusetts license number 45776, 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 Frank N. Finkelstein, M.D. prescribe under Medicare Part D?
In 2024, Frank N. Finkelstein, M.D. had 12 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.