Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Peter Westervelt, MD

Medical Oncology Physician in Brunswick, ME · enumerated 2005.

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

National Provider Identifier

1043292246

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Registry record

Entity type Individual (Type 1)

Name Dr. Peter Westervelt

Credential MD

Sex Male

Practice address 329 Maine St, Brunswick, ME, 04011

Phone (207) 373-2266

Fax (314) 454-5902

Enumeration date Nov 15, 2005

Last updated in NPPES Nov 28, 2023

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 2006008771 (MO) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 211561 (MA) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License MD27026 (ME) 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
209744622	Medicaid	MO	-

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 Westervelt?

The National Provider Identifier (NPI) for Peter Westervelt is 1043292246, a Type 1 (individual) record in the CMS NPPES registry.

Where does Peter Westervelt practice?

The practice location on file with NPPES is in Brunswick, ME. 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 2023-11-28.