Individual provider Active NPI

Josiah David Cox, MD

  • Child & Adolescent Psychiatry Physician
  • Oakland, CA
National Provider Identifier
1891292082
Registry record updated Oct 27, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Child & Adolescent Psychiatry PhysicianTaxonomy code 2084P0804X
License
186172 Issued in CA
Practice address
5275 Claremont Ave
Oakland, CA 94618-1032
Phone
(510) 428-3571
Fax
(510) 597-7171
NPI assigned
Apr 12, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 27, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Child & Adolescent Psychiatry Physician 2084P0804X 186172 CA Primary

Addresses

Primary practice location

5275 Claremont Ave
Oakland, CA 94618-1032

Mailing address

5275 Claremont Ave
Oakland, CA 94618-1032
Phone (510) 428-3571

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20230912000021 CA Practitioner - Psychiatry 5092068635 Reassigns benefits to 2 organizations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
186172CAMDChild & Adolescent Psychiatry Physician

Practice roles

OrganizationSpecialtyStatusNew patients
UCSF Medical Group Business Services CurrentSince Jul 29, 2023 Accepting new patients
University of California San Francisco CurrentSince Jul 29, 2023 Accepting new patients
UCSF Psychiatry Psychiatry CurrentSince Jul 29, 2023 Accepting new patients
University of California San Francisco CurrentSince Jul 29, 2023 Accepting new patients
University of California San Francisco Current Accepting new patients
UCSF Medical Group Business Services CurrentSince Jul 29, 2023 Accepting new patients

Locations

5275 Claremont Ave
Oakland, CA 94618
Phone (510) 428-3050

747 52nd St
Oakland, CA 94609
Phone (510) 428-3070

401 Parnassus Ave
#984
San Francisco, CA 94143
Phone (415) 476-7527

2330 Post St
San Francisco, CA 94115
Phone (415) 502-4444

675 18th St
Ste PB5250
San Francisco, CA 94143

401 Parnassus Ave
San Francisco, CA 94143
Phone (415) 476-7500

2001 The Embarcadero
Ofc Of
San Francisco, CA 94143
Phone (628) 224-5503

675 18th St
San Francisco, CA 94143
Phone (415) 476-7527

400 Parnassus Ave
#A632
San Francisco, CA 94143
Phone (415) 473-1000

Interoperability endpoints

  • Direct secure messaging: jcox309003@direct-ucsfmedicalcenter.org
  • Direct secure messaging: josiah.cox.1@11331.direct.athenahealth.com

Organizations & group practices 6

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1523491200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761523200000",
    "number": "1891292082",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5275 CLAREMONT AVE",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946181032",
            "telephone_number": "510-428-3571",
            "fax_number": "510-597-7171"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5275 CLAREMONT AVE",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946181032",
            "telephone_number": "510-428-3571",
            "fax_number": "510-597-7171"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "COX",
        "first_name": "JOSIAH",
        "middle_name": "DAVID",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-04-12",
        "last_updated": "2025-10-27",
        "certification_date": "2025-10-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0804X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Child & Adolescent Psychiatry",
            "state": "CA",
            "license": "186172",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Oakland, CA

Sources for this page

Verify at the official NPI Registry.