Derek Yi

Primary specialty

Social WorkerTaxonomy code 104100000X

Practice address

3478 Buskirk Ave Ste 260
Pleasant Hill, CA 94523-4358

Phone

(925) 943-1794

NPI assigned

Oct 21, 2019

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

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": "1571616000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751846400000",
    "number": "1083257273",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1038 POST ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941095603",
            "telephone_number": "415-775-2636"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3478 BUSKIRK AVE STE 260",
            "city": "PLEASANT HILL",
            "state": "CA",
            "postal_code": "945234358",
            "telephone_number": "925-943-1794"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8945 Golf Links Rd",
            "address_purpose": "LOCATION",
            "city": "Oakland",
            "state": "CA",
            "postal_code": "946054124",
            "country_code": "US",
            "telephone_number": "510-317-1444",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2396 University Ave",
            "address_purpose": "LOCATION",
            "city": "East Palo Alto",
            "state": "CA",
            "postal_code": "94303",
            "country_code": "US",
            "telephone_number": "650-331-1611",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2015 Pioneer Ct Ste B",
            "address_purpose": "LOCATION",
            "city": "San Mateo",
            "state": "CA",
            "postal_code": "944031736",
            "country_code": "US",
            "telephone_number": "650-348-6603",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1038 Post St",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941095603",
            "country_code": "US",
            "telephone_number": "415-775-2636",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "YI",
        "first_name": "DEREK",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-10-21",
        "last_updated": "2025-07-07",
        "certification_date": "2025-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "171M00000X",
            "taxonomy_group": "",
            "desc": "Case Manager/Care Coordinator",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "172V00000X",
            "taxonomy_group": "",
            "desc": "Community Health Worker",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "CA",
            "license": null,
            "primary": false
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Danna Yang
• Michael Chikang Yang, PHARMD
• Qi Yang
• Jerry C S Yao, DDS
• Regina Valderrama Yen, PT
• Soon Ai Yoon, L.AC. O.M.D.
• Ashley Young
• Isabelle Young
• Stella Young, DC
• Your East Bay Doulas

• Social Worker in Pleasant Hill, CA
• Providers in Pleasant Hill, CA by specialty
• Social Worker in California

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