Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stuart Kosh

Social Worker in Dublin, CA · enumerated 2013.

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

National Provider Identifier

1043640535

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Registry record

Entity type Individual (Type 1)

Name Stuart Kosh

Sex Male

Practice address 5325 Broder Blvd, Dublin, CA, 94568

Phone (209) 843-0285

Enumeration date Nov 19, 2013

Last updated in NPPES Aug 20, 2024

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License 249837 (CA) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 87142 (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 1043640535 active?

Yes, as of the latest NPPES snapshot, NPI 1043640535 is active (record last updated 2024-08-20).

How do I verify Stuart Kosh's NPI record?

Cross-check NPI 1043640535 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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Stacey Bellone Clinical Social Worker · Dublin, CA NPI 1750410163 Bonnie Cook Marriage & Family Therapist · Dublin, CA NPI 1942401856 Sarah Ulloa Marriage & Family Therapist · Dublin, CA NPI 1699976183 Josalyn Harris Mental Health Counselor · Dublin, CA NPI 1629270277 Penelope Russell Forensic Psychologist · Dublin, CA NPI 1508061516 Maxor National Pharmacy Services LLC Community/Retail Pharmacy · Dublin, CA NPI 1356547913 Manon Mashburn Psychiatry Physician · Dublin, CA NPI 1790984276 Sharmaynne Roberts Clinical Social Worker · Dublin, CA NPI 1376724310

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-20.