Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Napier, M.D.

Specialist in Springfield, MA · enumerated 2006 · practices at Pioneer Valley Radiation Oncology, PC.

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

National Provider Identifier

1750480422

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Napier

Credential M.D.

Sex Male

Practice address 3350 Main St, Springfield, MA, 01107

Phone (413) 794-9175

Enumeration date Sep 21, 2006

Last updated in NPPES Oct 23, 2015

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 77215 (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
8601251	Other	MA	CIGNA
14683	Other	MA	HEALTH NEW ENGLAND
AA452151	Other	MA	HARVARD PILGRIM AND TUFTS THROUGH VALLEY HEALTH PHO
1750480422	Other	MA	MASS HEALTH
1750480422	Other	MA	BCBS
P01463302	Other	MA	RAILROAD MEDICARE
1533553	Other	MA	COVENTRY INDIV. ID #
000000139814	Other	MA	BOSTON MEDICAL CENTER THROUGH VALLEY HEALTH PHO
96513602	Other	MA	NETWORK HEALTH

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

What specialty is Thomas Napier?

Thomas Napier is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-23.