Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexandra Sinclair, DO

Internal Medicine Physician in Corvallis, OR · enumerated 2024.

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

National Provider Identifier

1548009434

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexandra Sinclair

Credential DO

Sex Female

Practice address 3600 Nw Samaritan Dr, Corvallis, OR, 97330

Phone (541) 768-4906

Enumeration date May 21, 2024

Last updated in NPPES May 21, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License PG220458 (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

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 Alexandra Sinclair?

Alexandra Sinclair 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 2024-05-21.