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

Alex Castenon, PSC

Community Health Worker in Fresno, CA · enumerated 2009.

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

National Provider Identifier

1629201934

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Registry record

Entity type Individual (Type 1)

Name Alex Castenon

Credential PSC

Sex Male

Practice address Fresno, CA, 93705

Phone (559) 264-7521

Enumeration date Sep 2, 2009

Last updated in NPPES Feb 14, 2024

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

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary

171M00000X Case Manager/Care Coordinator Other Service Providers Secondary

172V00000X Community Health Worker Other Service Providers 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

How do I verify Alex Castenon's NPI record?

Cross-check NPI 1629201934 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1629201934 active?

Yes, as of the latest NPPES snapshot, NPI 1629201934 is active (record last updated 2024-02-14).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-14.