Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Patricia Ann Williamson, N.P.-C.

Nurse Practitioner in Othello, WA · enumerated 2008.

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

National Provider Identifier

1639340193

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Registry record

Entity type Individual (Type 1)

Name Patricia Ann Williamson

Credential N.P.-C.

Sex Female

Practice address 1515 E Columbia St, Othello, WA, 99344

Phone (509) 488-5256

Fax (509) 488-9939

Enumeration date Mar 12, 2008

Last updated in NPPES Feb 17, 2020

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP60698663 (WA) Primary

Other identifiers

Identifier	Type	State	Issuer
2068766	Medicaid	WA	-

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 NPI 1639340193 active?

Yes, as of the latest NPPES snapshot, NPI 1639340193 is active (record last updated 2020-02-17).

How do I verify Patricia Williamson's NPI record?

Cross-check NPI 1639340193 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-17.