John M. Fagnou, M.D.
Diagnostic Radiology Physician · Boston, MA
John M. Fagnou, M.D. is a diagnostic radiology physician with a practice address in Boston, Massachusetts, and NPI 1730319369, issued on Jul 16, 2009. Check the license (Massachusetts L-239520, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John M. Fagnou
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- L-239520 MA
Self-reported in NPPES; status is on the state search - Practice location
- Massachusetts General Hospital, Boston, MA 02114
- Phone
- (617) 726-8323
- Enumerated
- Jul 16, 2009
- Record last updated
- Jul 16, 2009 (not updated in 17 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at Massachusetts General Hospital
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John M. Fagnou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license L-239520Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
896 diagnostic radiology physician records list a practice address in Boston
They are 896 of the 41,865 NPPES records with a practice address in Boston, and 1,658 diagnostic radiology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 896 in Boston → All 1,658 in Massachusetts → Every provider in Boston →
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- Shadi Abdar Esfahani, MD, MPHBoston, MA1497137590
- Essmaeel Abdel-Dayem, MDSouth Weymouth, MA1427088335
- Scott Abel, MDLowell, MA1124020201
- Godwin Abiola, MDBoston, MA1740645035
- Janeiro Achibiri, M.D.Boston, MA1548641822
- Jeanne Ackman, M.D.Boston, MA1285692897
Common questions
What is John M. Fagnou, M.D.'s NPI number?
John M. Fagnou, M.D.'s National Provider Identifier (NPI) is 1730319369, issued on Jul 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is John M. Fagnou, M.D. located?
The NPPES record lists a practice address at Massachusetts General Hospital, Boston, MA, 02114. Phone: (617) 726-8323. Providers update this record themselves, so call before visiting.
How can I verify John M. Fagnou, M.D.'s license?
NPPES lists Massachusetts license number L-239520, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.