Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Claire Louise Buchanan, M.D.

Surgery Physician in Seattle, WA · enumerated 2006.

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

National Provider Identifier

1689754467

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Registry record

Entity type Individual (Type 1)

Name Dr. Claire Louise Buchanan

Credential M.D.

Sex Female

Practice address 1550 N 115th St, Seattle, WA, 98133

Phone (206) 520-5000

Enumeration date Oct 16, 2006

Last updated in NPPES Mar 4, 2022

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License MD00045292 (WA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD00045292 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

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.

What specialty is Claire Buchanan?

Claire Buchanan 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-04.