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

Rock B. Jocelyn

Addiction (Substance Use Disorder) Counselor in Antioch, CA · enumerated 2007.

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

National Provider Identifier

1578785267

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Registry record

Entity type Individual (Type 1)
Name Rock B. Jocelyn
Sex Male
Practice address Antioch, CA, 94509
Phone (925) 754-3673
Fax (925) 754-2002
Enumeration date May 3, 2007
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier Type State Issuer
56571 Other CA STAFF ID NUMBER
07531 Other CA ADULT TX ANTIOCH
07551 Other CA ADULT TX BRENTWOOD

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

Where does Rock Jocelyn practice?
The practice location on file with NPPES is in Antioch, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Rock Jocelyn?
The National Provider Identifier (NPI) for Rock Jocelyn is 1578785267, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.