Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Harris

Specialist in Auburn, ME · enumerated 2009.

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

National Provider Identifier

1538303003

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Registry record

Entity type Individual (Type 1)

Name William Harris

Sex Male

Practice address 415 Rodman Rd, Auburn, ME, 04210

Phone (207) 376-3022

Fax (207) 333-3501

Enumeration date Apr 28, 2009

Last updated in NPPES Oct 27, 2009

Taxonomy & licenses

174400000X Specialist Other Service Providers · License OT1056 (ME) Primary

Other identifiers

Identifier	Type	State	Issuer
199550199	Medicaid	ME	-

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

Where does William Harris practice?

The practice location on file with NPPES is in Auburn, ME. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for William Harris?

The National Provider Identifier (NPI) for William Harris is 1538303003, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-27.