Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katy Hartley

Social Worker in Yuba City, CA · enumerated 2022.

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

National Provider Identifier

1679202121

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Registry record

Entity type Individual (Type 1)

Name Katy Hartley

Sex Female

Practice address 1445 Veterans Memorial Cir, Yuba City, CA, 95993

Phone (530) 822-5998

Enumeration date Jun 9, 2022

Last updated in NPPES Jun 9, 2022

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers 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 1679202121 active?

Yes, as of the latest NPPES snapshot, NPI 1679202121 is active (record last updated 2022-06-09).

How do I verify Katy Hartley's NPI record?

Cross-check NPI 1679202121 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 2022-06-09.