Quick answers
- Where does Joseph P. James see patients?
- Medicare's clinician data lists 3 practice locations, including Riverside, CA and Norwalk, CA. Call before your visit to confirm the address.
- What is Joseph P. James's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Joseph P. James accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph P. James accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Joseph P. James?
- (951) 358-4390, as listed in official Medicare / NPI Registry data.
- What is Joseph P. James's NPI number?
- 1023030327. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Joseph P. James is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 County Farm RdRiverside, CA 92503 (951) 358‑4390
- 11401 Bloomfield AveNorwalk, CA 90650 (916) 651‑8811
- 9990 County Farm RdRiverside, CA 92503
Group practices
Medicare enrollment lists Joseph P. James as a member of these groups (CMS data updated 2026-10-02).
- Department of State Hospitals270 clinicians in the group
- County of Riverside193 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Riverside
Clinicians with the same Medicare primary specialty in Riverside, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1979 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023030327 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians