Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diane S Messersmith, M.D.

Diagnostic Radiology Physician in Templeton, MA · enumerated 2006.

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

National Provider Identifier

1841239035

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Registry record

Entity type Individual (Type 1)

Name Diane S Messersmith

Credential M.D.

Sex Female

Practice address 14 Rice Rd, Templeton, MA, 01468

Phone (978) 939-2035

Fax (978) 939-2039

Enumeration date Jun 5, 2006

Last updated in NPPES Jul 31, 2016

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 152677 (MA) Primary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License 152677 (MA) Secondary

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
3193845	Other	MA	HEALTHY START
300100562	Other	MA	RAILROAD MEDICARE
042477296	Other	MA	UNITED HEALTH CARE
402347	Other	MA	TUFTS HEALTH PLAN
45817	Other	MA	FALLON COMMUNITY HEALTH P
72316	Other	MA	CIGNA
042477296	Other	MA	HEALTH CARE VALUE MANAGEM
3193845	Medicaid	MA	-
40010	Other	MA	HEALTH NEW ENGLAND
98774503	Other	MA	NETWORK HEALTH
J21048	Other	MA	BLUE CROSS BLUE SHIELD
0007041	Other	MA	NEIGHBORHOOD HEALTH
042477296	Other	MA	PRIVATE HEALTH CARE SYSTE
241192	Other	MA	HARVARD PILGRIM HEALTH CA

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Diane Messersmith?

Diane Messersmith is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-31.