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

Jennifer L. Stark, M. A.

Marriage & Family Therapist in Los Banos, CA · enumerated 2007.

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

National Provider Identifier

1619006541

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Registry record

Entity type Individual (Type 1)

Name Jennifer L. Stark

Credential M. A.

Sex Female

Practice address Los Banos, CA, 93635

Phone (209) 509-5272

Fax (209) 826-3663

Enumeration date Mar 5, 2007

Last updated in NPPES Sep 16, 2009

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

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC41011 (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 1619006541 active?

Yes, as of the latest NPPES snapshot, NPI 1619006541 is active (record last updated 2009-09-16).

How do I verify Jennifer Stark's NPI record?

Cross-check NPI 1619006541 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-16.