NPIMap

Organization Active NPI

Occupational Health Centers of California, a Medical Corporation

  • Occupational Medicine Clinic/Center
  • Ontario, CA
National Provider Identifier
1245374693
Registry record updated Jun 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Occupational Medicine Clinic/CenterTaxonomy code 261QX0100X
Legal business name
OCCUPATIONAL HEALTH CENTERS OF CALIFORNIA, A MEDICAL CORPORATION
Practice address
1101 S. Milliken Avenue
Suite C
Ontario, CA 91761
Phone
(909) 390-2799
Fax
(909) 390-0929
NPI assigned
Feb 19, 2007
Organization subpart
No

Authorized official

NPPES NPI Registry
Name
John Anderson, DO
Title
Vice President
Phone
(972) 364-8000

Corporate family (same tax ID) 24

Organizations that report the same tax identification number in the National Provider Directory.

National Provider Directory

National Provider Directory
Tax ID family
Concentra Medical Center (158 organizations share this tax ID)

Specialties & licenses 3

NPPES NPI Registry
Specialty (taxonomy)CodeLicenseStatePrimary
Health Service Clinic/Center 261QH0100X
Physical Therapy Clinic/Center 261QP2000X
Occupational Medicine Clinic/Center 261QX0100X Primary

Addresses

NPPES NPI Registry

Primary practice location

1101 S. Milliken Avenue
Suite C
Ontario, CA 91761

Mailing address

5080 Spectrum Drive
Suite 1200 West Tower
Addison, TX 75001
Phone (972) 364-8000

Other names 1

NPPES NPI Registry
  • Concentra Medical Center, A Medical Corporation Doing business as

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format, last updated by the provider on Jun 19, 2025.

{
    "created_epoch": "1171843200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1750291200000",
    "number": "1245374693",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5080 SPECTRUM DRIVE",
            "address_2": "SUITE 1200 WEST TOWER",
            "city": "ADDISON",
            "state": "TX",
            "postal_code": "75001",
            "telephone_number": "972-364-8000",
            "fax_number": "214-775-4502"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1101 S. MILLIKEN AVENUE",
            "address_2": "SUITE C",
            "city": "ONTARIO",
            "state": "CA",
            "postal_code": "91761",
            "telephone_number": "909-390-2799",
            "fax_number": "909-390-0929"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "OCCUPATIONAL HEALTH CENTERS OF CALIFORNIA, A MEDICAL CORPORATION",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-02-19",
        "last_updated": "2025-06-19",
        "certification_date": "2025-06-19",
        "status": "A",
        "authorized_official_last_name": "ANDERSON",
        "authorized_official_first_name": "JOHN",
        "authorized_official_title_or_position": "VICE PRESIDENT",
        "authorized_official_telephone_number": "972-364-8000",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "261QH0100X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Health Service",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "261QP2000X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Physical Therapy",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "261QX0100X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Occupational Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Concentra Medical Center, A Medical Corporation",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Ontario, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 19, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.