John Y. Jao, M.D.
Internal Medicine Physician · Boston, MA
John Y. Jao, M.D. is an internal medicine physician with a practice address in Boston, Massachusetts, and NPI 1538359674, issued on Jul 25, 2007. Check the license (Massachusetts 31168, 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 Y. Jao
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 31168 MA
Self-reported in NPPES; status is on the state search - Practice location
- 110 Chauncy St, Boston, MA 02111
- Phone
- (617) 654-7535
- Enumerated
- Jul 25, 2007
- Record last updated
- Jul 25, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 110 Chauncy St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Y. Jao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 31168Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2,320 internal medicine physician records list a practice address in Boston
They are 2,320 of the 41,865 NPPES records with a practice address in Boston, and 6,825 internal medicine physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,320 in Boston → All 6,825 in Massachusetts → Every provider in Boston →
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Common questions
What is John Y. Jao, M.D.'s NPI number?
John Y. Jao, M.D.'s National Provider Identifier (NPI) is 1538359674, issued on Jul 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Y. Jao, M.D. located?
The NPPES record lists a practice address at 110 Chauncy St, Boston, MA, 02111. Phone: (617) 654-7535. Providers update this record themselves, so call before visiting.
How can I verify John Y. Jao, M.D.'s license?
NPPES lists Massachusetts license number 31168, 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.