Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Richard S Barth, PH.D.
Psychologist in Union City, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1790852150
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Richard S Barth
Credential PH.D.
Sex Male
Practice address 3555 Whipple Rd Bldg C, Union City, CA, 94587
Phone (510) 675-4312
Fax (510) 675-4315
Enumeration date Nov 29, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY11975 (CA) 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.
Frequently asked questions
What is the NPI number for Richard Barth?
The National Provider Identifier (NPI) for Richard Barth is 1790852150, a Type 1 (individual) record in the CMS NPPES registry.
Where does Richard Barth practice?
The practice location on file with NPPES is in Union City, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.