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

Mr. Matthew Holt

Clinical Social Worker in Hayward, CA · enumerated 2010.

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

National Provider Identifier

1538478318

Verified

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Registry record

Entity type Individual (Type 1)
Name Mr. Matthew Holt
Sex Male
Practice address Hayward, CA, 94541
Phone (510) 387-8992
Enumeration date Sep 28, 2010
Last updated in NPPES Feb 8, 2023

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 96472 (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.

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Frequently asked questions

What is the NPI number for Matthew Holt?
The National Provider Identifier (NPI) for Matthew Holt is 1538478318, a Type 1 (individual) record in the CMS NPPES registry.
Where does Matthew Holt practice?
The practice location on file with NPPES is in Hayward, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-08.