Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kathryn Hook, PA-C

Physician Assistant in Antioch, CA · enumerated 2015.

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

National Provider Identifier

1528450343

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Registry record

Entity type Individual (Type 1)

Name Kathryn Hook

Credential PA-C

Sex Female

Practice address 3901 Lone Tree Way, Antioch, CA, 94509

Phone (925) 779-7200

Enumeration date Mar 3, 2015

Last updated in NPPES Mar 24, 2021

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 52342 (CA) 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 1528450343 active?

Yes, as of the latest NPPES snapshot, NPI 1528450343 is active (record last updated 2021-03-24).

How do I verify Kathryn Hook's NPI record?

Cross-check NPI 1528450343 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 2021-03-24.