Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John P Nadeau, D.O.

Surgery Physician in Biddeford, ME · enumerated 2007.

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

National Provider Identifier

1366623548

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Registry record

Entity type Individual (Type 1)

Name Dr. John P Nadeau

Credential D.O.

Sex Male

Practice address 9 Healthcare Dr Ste 204, Biddeford, ME, 04005

Phone (207) 284-2630

Enumeration date Nov 16, 2007

Last updated in NPPES Mar 11, 2019

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 036131230 (IL) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License DO2732 (ME) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
036131230	Medicaid	IL	-

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 John Nadeau?

John Nadeau is registered in NPPES with the primary taxonomy of Surgery 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 2019-03-11.