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

Mr. Matthew Arthur Barraza, L.C.S.W.

Clinical Social Worker in Los Angeles, CA · enumerated 2007.

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

National Provider Identifier

1871634543

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Registry record

Entity type Individual (Type 1)

Name Mr. Matthew Arthur Barraza

Credential L.C.S.W.

Sex Male

Practice address Los Angeles, CA, 90020

Phone (213) 996-1343

Enumeration date Feb 8, 2007

Last updated in NPPES Jun 1, 2022

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCS23013 (CA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
383955	Other	CA	MHN NETWORK PROVIDER NO.

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

Where does Matthew Barraza practice?

The practice location on file with NPPES is in Los Angeles, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Matthew Barraza?

The National Provider Identifier (NPI) for Matthew Barraza is 1871634543, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Los Angeles County Department of Mental Health Mental Health Clinic/Center (Including Community Mental Health Center) · Los Angeles, CA NPI 1477569754 Stephanie Lamarche Clinical Social Worker · Los Angeles, CA NPI 1609901990 Bradley Albano Psychiatric/Mental Health Registered Nurse · Los Angeles, CA NPI 1295854594 Beatriz Patron Marriage & Family Therapist · Los Angeles, CA NPI 1194970509 Los Angeles County Department of Mental Health Mental Health Clinic/Center (Including Community Mental Health Center) · Los Angeles, CA NPI 1417186719 Jennifer Hercules Clinical Social Worker · Los Angeles, CA NPI 1487988085 Joanna Hernandez Clinical Social Worker · Los Angeles, CA NPI 1649545781 Dwight Andrew Osorio Psychiatric/Mental Health Registered Nurse · Los Angeles, CA NPI 1518219385

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-01.