Timothy Donald Simpson

Primary specialty

Social WorkerTaxonomy code 104100000X

License

132817 Issued in CA

Practice address

500 S San Pedro St
Los Angeles, CA 90013-2102

Phone

(213) 285-4260

NPI assigned

Sep 26, 2024

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

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

{
    "created_epoch": "1727308800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754524800000",
    "number": "1093533382",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "811 GRAMERCY DR APT 208",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900053477",
            "telephone_number": "609-304-1856"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 S SAN PEDRO ST",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900132102",
            "telephone_number": "213-285-4260"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIMPSON",
        "first_name": "TIMOTHY",
        "middle_name": "DONALD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2024-09-26",
        "last_updated": "2025-08-07",
        "certification_date": "2025-08-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "CA",
            "license": "132817",
            "primary": true
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "172V00000X",
            "taxonomy_group": "",
            "desc": "Community Health Worker",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "373H00000X",
            "taxonomy_group": "",
            "desc": "Day Training/Habilitation Specialist",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Marizela Guerrero Simpson, MFT
• Martha Simpson, LMFT, CSAT
• Shelly Marie Simpson, LMSW
• Squire Simpson
• Stuart Simpson
• William Simpson, M.D.
• Irine Sims-Komatsu, DDS
• Arlethia Sims
• Candace Renee Sims, LMFT
• Charles Arthur Sims, M.D.

• Social Worker in Los Angeles, CA
• Providers in Los Angeles, CA by specialty
• Social Worker in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 7, 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.