Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Mcdougall, DO

Internal Medicine Physician in Brookings, OR · enumerated 2005.

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

National Provider Identifier

1598763302

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Registry record

Entity type Individual (Type 1)

Name William Mcdougall

Credential DO

Sex Male

Practice address 503 Railroad St, Brookings, OR, 97415

Phone (707) 954-8661

Enumeration date Jul 14, 2005

Last updated in NPPES Feb 18, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D024746 (OR) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A7843 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License DO24746 (OR) 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
274898	Medicaid	OR	-

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 specialty is William Mcdougall?

William Mcdougall 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-18.