Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David B. Peterson, MD

Internal Medicine Physician in Westfield, MA · enumerated 2006.

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

National Provider Identifier

1619918752

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Registry record

Entity type Individual (Type 1)

Name David B. Peterson

Credential MD

Sex Male

Practice address 115 W Silver St, Westfield, MA, 01085

Phone (413) 568-2811

Fax (610) 834-2862

Enumeration date Jun 9, 2006

Last updated in NPPES Feb 1, 2023

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 51297 (MA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 51297 (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
110198433	Other	MA	RAILROAD MEDICARE
15373	Other	MA	HEALTHCARE NEW ENGLAND
000000033017	Other	MA	BMC HEALTH NET
3054667	Medicaid	MA	-
PEJ07622	Other	MA	BLUE SHIELD

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 David Peterson?

David Peterson is registered in NPPES with the primary taxonomy of Internal Medicine Physician. 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 2023-02-01.