Occupational Health Centers of California, a Medical Corporation
NPI 1225505340 · Occupational Medicine Clinic/Center · Ontario, CA
Occupational Health Centers of California, a Medical Corporation is a Occupational Medicine Clinic/Center organization in Ontario, CA (NPI 1225505340).
Provider details
- NPI number
- 1225505340
- Entity type
- Organization
- Primary specialty
- Occupational Medicine Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- John Anderson, Vp(972) 364-8000
Specialties & taxonomies
Ambulatory Health Care Facilities
- Health Service Clinic/Center261QH0100X
Ambulatory Health Care Facilities
- Physical Therapy Clinic/Center261QP2000X
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Concentra Medical Center
- Doing business as
- Concentra Medical Center
Registry dates
- Enumerated
- 2018-10-26
- Last updated
- 2025-06-19
- Certified
- 2025-06-19
Frequently asked questions
- What is Occupational Health Centers of California, a Medical Corporation's NPI number?
- Occupational Health Centers of California, a Medical Corporation's National Provider Identifier (NPI) is 1225505340, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Occupational Health Centers of California, a Medical Corporation?
- Occupational Health Centers of California, a Medical Corporation is classified in the NPPES registry as Occupational Medicine Clinic/Center (Ambulatory Health Care Facilities).
- Where is Occupational Health Centers of California, a Medical Corporation located?
- Occupational Health Centers of California, a Medical Corporation's practice location on file with NPPES is 2171 S Grove Ave Ste a, Ontario, CA 91761-4600.
- What is Occupational Health Centers of California, a Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Occupational Health Centers of California, a Medical Corporation is (909) 923-4080.
- Who is the authorized official for Occupational Health Centers of California, a Medical Corporation?
- The authorized official listed on Occupational Health Centers of California, a Medical Corporation's NPPES record is John Anderson, Vp. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Occupational Health Centers of California, a Medical Corporation's NPI active?
- Yes — Occupational Health Centers of California, a Medical Corporation's NPI (1225505340) is active in the NPPES registry as of the last update on 2025-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.