Individual provider Active NPI

Joshua Simpson

  • Clinical Social Worker
  • Walnut, CA
National Provider Identifier
1104350792
Registry record updated Jul 25, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
License
LCSW118202 Issued in CA
Practice address
340 S Lemon Ave Ste 9892
Walnut, CA 91789-2706
Phone
(415) 403-2156
NPI assigned
Apr 20, 2017
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 25, 2025

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Social Worker 1041C0700X ASW97971 CA
Case Manager/Care Coordinator 171M00000X
Rehabilitation Practitioner 225400000X
Clinical Social Worker 1041C0700X LCSW118202 CA Primary

Addresses

Primary practice location

340 S Lemon Ave Ste 9892
Walnut, CA 91789-2706

Mailing address

PO Box 14824
Long Beach, CA 90853-4824
Phone (909) 241-1746

Other practice location 1

801 E Chapman Ave
#203
Fullerton, CA 92831-3839
Phone (714) 680-9000 ext. 9034

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
ASW97971CAMDClinical Social Worker
LCSW118202CAMDClinical Social Worker

Practice roles

OrganizationSpecialtyStatusNew patients
Cerebral Medical Group, a Professional Corporation CurrentSince Aug 17, 2025 Accepting new patients

Locations

340 S Lemon Ave
Ste 9892
Walnut, CA 91789
Phone (415) 617-9894

Organizations & group practices 1

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": "1492646400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753401600000",
    "number": "1104350792",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 14824",
            "city": "LONG BEACH",
            "state": "CA",
            "postal_code": "908534824",
            "telephone_number": "909-241-1746"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "340 S LEMON AVE STE 9892",
            "city": "WALNUT",
            "state": "CA",
            "postal_code": "917892706",
            "telephone_number": "415-403-2156"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "801 E Chapman Ave",
            "address_2": "#203",
            "address_purpose": "LOCATION",
            "city": "Fullerton",
            "state": "CA",
            "postal_code": "928313839",
            "country_code": "US",
            "telephone_number": "714-680-9000 x9034",
            "fax_number": "714-680-8233",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIMPSON",
        "first_name": "JOSHUA",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2017-04-20",
        "last_updated": "2025-07-25",
        "certification_date": "2025-07-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "ASW97971",
            "primary": false
        },
        {
            "code": "171M00000X",
            "taxonomy_group": "",
            "desc": "Case Manager/Care Coordinator",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "225400000X",
            "taxonomy_group": "",
            "desc": "Rehabilitation Practitioner",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "LCSW118202",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 25, 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.