NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Kathy A Winzer, ARNP

Clinic/Center in Nespelem, WA · enumerated 2006.

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

National Provider Identifier

1639191091

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Registry record

Entity type Individual (Type 1)
Name Mrs. Kathy A Winzer
Credential ARNP
Sex Female
Practice address Nespelem, WA, 99155
Phone (509) 634-2900
Fax (509) 634-2945
Enumeration date Jul 24, 2006
Last updated in NPPES Sep 27, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

261Q00000X Clinic/Center Ambulatory Health Care Facilities · License AP30005393 (WA) Primary

Other identifiers

Identifier Type State Issuer
7139660 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 1639191091 active?
Yes, as of the latest NPPES snapshot, NPI 1639191091 is active (record last updated 2011-09-27).
How do I verify Kathy Winzer's NPI record?
Cross-check NPI 1639191091 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 2011-09-27.