Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jennifer Callahan, PSY.D

Clinical Psychologist in Westlake Village, CA · enumerated 2013.

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

National Provider Identifier

1013354166

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Registry record

Entity type Individual (Type 1)

Name Dr. Jennifer Callahan

Credential PSY.D

Sex Female

Practice address 3835 E Thousand Oaks Blvd # 364, Westlake Village, CA, 91362

Phone (818) 583-6221

Enumeration date May 30, 2013

Last updated in NPPES Nov 12, 2022

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY25258 (CA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

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

How do I verify Jennifer Callahan's NPI record?

Cross-check NPI 1013354166 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1013354166 active?

Yes, as of the latest NPPES snapshot, NPI 1013354166 is active (record last updated 2022-11-12).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-12.