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OCCUPATIONAL HEALTH CENTERS OF CALIFORNIA, A MEDICAL CORPORATION
NPI 1225646318
Clinic/Center - Occupational Medicine in Fremont, CA

Active since July 15, 2020
3161 WALNUT AVE, FREMONT, CA 94538(510) 796-1000(510) 796-1050 Get Directions Write a Review

NPPES record last updated: June 19, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 19, 2025, Jul 15, 2020 (2 updates tracked since 2020).

About Occupational Health Centers Of California, A Medical Corporation NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OCCUPATIONAL HEALTH CENTERS OF CALIFORNIA, A MEDICAL CORPORATION (NPI 1225646318), doing business as Concentra Medical Centers, is a healthcare organization registered as an occupational medicine in Fremont, California and active in the NPI registry since July 2020. The organization lists John Anderson, Vice President, as its authorized official.

NPPES Registry Identity

NPI1225646318
Entity TypeOrganization
Primary Taxonomy261QX0100X
Legal Business NameOCCUPATIONAL HEALTH CENTERS OF CALIFORNIA, A MEDICAL CORPORATION
Location Address3161 WALNUT AVEFremont, CA 94538-2216
Mailing Address5080 Spectrum Dr Ste 1200wAddison, TX 75001-4624
Phone(510) 796-1000
Fax(510) 796-1050
Organization SubpartNo
Authorized OfficialJohn AndersonVice President · (972) 364-8000
Enumeration DateJuly 15, 2020
Last NPPES UpdateJune 19, 20252 updates tracked since enumeration
NPPES CertifiedJune 19, 2025
✔ NPI 1225646318 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyClinic/Center · Occupational MedicineAmbulatory Health Care Facilities
Taxonomy Code261QX0100X
Also ListedClinic/Center · Health ServiceTaxonomy 261QH0100X
Also ListedClinic/Center · Physical TherapyTaxonomy 261QP2000X
3161 WALNUT AVE, Fremont, CA 94538
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Other Names 1

Doing Business AsConcentra Medical Centers

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. ASHLEY PENLAND PA-C
Physician Assistant
3161 WALNUT AVE
FREMONT, CA 94538
Alameda County (510) 796-1000
MRS. MOHINI PANKAJ PATEL NP
Nurse Practitioner
3161 WALNUT AVE
FREMONT, CA 94538
Alameda County (510) 796-1000
CHARLETTE SHY WIGGINS-GURICH
Physical Therapist (Orthopedic)
3161 WALNUT AVE
FREMONT, CA 94538
Alameda County (510) 796-1000
MRS. ANNE MARIE NAUDIN P.T.
Specialist
3161 WALNUT AVE
FREMONT, CA 94538
Alameda County (510) 796-1000
KRISTINA WONG PT, DPT
Physical Therapist
3161 WALNUT AVE
FREMONT, CA 94538
Alameda County (510) 796-1000
MS. VERONICA BURCIAGA CABALLERO PA-C
Physician Assistant
3161 WALNUT AVE
FREMONT, CA 94538
Alameda County (510) 796-1000
DAVID THOMAS STACY P.A
Physician Assistant
3161 WALNUT AVE
FREMONT, CA 94538
Alameda County (510) 796-1000
TANYA RUTH IQBAL
Physical Therapist
3161 WALNUT AVE
FREMONT, CA 94538
Alameda County (510) 796-1000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Occupational Health Centers Of California, A Medical Corporation's NPI number?

The NPI number for Occupational Health Centers Of California, A Medical Corporation is 1225646318. It was assigned to this organization in the NPPES registry on July 15, 2020. The provider is doing business as Concentra Medical Centers.

Where is Occupational Health Centers Of California, A Medical Corporation located?

Occupational Health Centers Of California, A Medical Corporation is located at 3161 Walnut Ave, Fremont, CA 94538. The listed phone number is (510) 796-1000.

What is Occupational Health Centers Of California, A Medical Corporation's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Occupational Medicine, with taxonomy code 261QX0100X.

When was this NPI record last updated?

The NPPES record for Occupational Health Centers Of California, A Medical Corporation was last updated on June 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.