Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert P Johnson, PHD

Psychologist in San Luis Obispo, CA · enumerated 2012.

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

National Provider Identifier

1134478399

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Robert P Johnson

Credential PHD

Sex Male

Practice address 285 South St, San Luis Obispo, CA, 93401

Phone (805) 269-0141

Fax (805) 928-4270

Enumeration date Sep 4, 2012

Last updated in NPPES Sep 30, 2019

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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 Robert Johnson practice?

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

What is the NPI number for Robert Johnson?

The National Provider Identifier (NPI) for Robert Johnson is 1134478399, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-30.