Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Gary S. Katz, Ph.D., A Professional Psychology Corporation

Clinical Psychologist in Thousand Oaks, CA · enumerated 2012 · authorized official Gary Katz, President.

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

National Provider Identifier

1457605164

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Registry record

Entity type Organization (Type 2)

Legal business name Gary S. Katz, Ph.D., A Professional Psychology Corporation

Practice address 509 Marin St, Suite 124, Thousand Oaks, CA, 91360

Phone (805) 405-8994

Fax (805) 426-8096

Enumeration date Nov 1, 2012

Last updated in NPPES Nov 1, 2012

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY17371 (CA) Primary

Authorized official

Name Gary Katz

Title President

Phone (805) 405-8994

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.

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Frequently asked questions

Where is Gary S. Katz, Ph.D., A Professional Psychology Corporation located?

The practice location on file with NPPES is in Thousand Oaks, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-11-01. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-01.