Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peter A. Fischer, M.D.

Rheumatology Physician in Mansfield, MA · enumerated 2006 · practices at Sturdy Health, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1235150756

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Registry record

Entity type Individual (Type 1)

Name Peter A. Fischer

Credential M.D.

Sex Male

Practice address 200 Copeland Dr, Mansfield, MA, 02048

Phone (508) 339-4144

Fax (508) 261-9940

Enumeration date Jul 21, 2006

Last updated in NPPES Jun 16, 2011

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 74937 (MA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
J12977	Other	MA	MABC
43614	Other	-	FALLON
3098800	Medicaid	MA	-
000000028126	Other	-	BMC HEALTHNET
405734	Other	-	RIBC
IM-B10235901	Other	-	CIGNA
65743	Other	-	HPHC
RH-B10235906	Other	-	CIGNA
074937	Other	-	TUFTS
3200141	Other	-	UHC

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Peter Fischer?

The National Provider Identifier (NPI) for Peter Fischer is 1235150756, a Type 1 (individual) record in the CMS NPPES registry.

Where does Peter Fischer practice?

The practice location on file with NPPES is in Mansfield, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-16.