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

Ms. Katherine Nagy, LICSW

Clinical Social Worker in Seattle, WA · enumerated 2019 · practices at Emily Program PC.

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

National Provider Identifier

1861955163

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Registry record

Entity type Individual (Type 1)

Name Ms. Katherine Nagy

Credential LICSW

Sex Female

Practice address Seattle, WA, 98109

Phone (206) 283-2220

Fax (206) 283-2223

Enumeration date Apr 12, 2019

Last updated in NPPES Apr 12, 2019

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 60896409 (WA) Primary

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 1861955163 active?

Yes, as of the latest NPPES snapshot, NPI 1861955163 is active (record last updated 2019-04-12).

How do I verify Katherine Nagy's NPI record?

Cross-check NPI 1861955163 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 2019-04-12.