Youjin Chang

Primary specialty

Social WorkerTaxonomy code 104100000X

Practice address

1100 San Leandro Blvd Ste 400
San Leandro, CA 94577-1670

Phone

(510) 920-6169

NPI assigned

Aug 20, 2025

Sex

Unspecified or another gender identity

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Practice roles

Locations

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.

• Alameda County Office of Dental Health

  • Dental Clinic/Center
  • San Leandro, CA
  • NPI 1619122561
  NPD

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

{
    "created_epoch": "1755648000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755648000000",
    "number": "1538046438",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1100 SAN LEANDRO BLVD STE 400",
            "city": "SAN LEANDRO",
            "state": "CA",
            "postal_code": "945771670",
            "telephone_number": "510-920-6169"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1100 SAN LEANDRO BLVD STE 400",
            "city": "SAN LEANDRO",
            "state": "CA",
            "postal_code": "945771670",
            "telephone_number": "510-920-6169"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHANG",
        "first_name": "YOUJIN",
        "sole_proprietor": "NO",
        "sex": "X",
        "enumeration_date": "2025-08-20",
        "last_updated": "2025-08-20",
        "certification_date": "2025-08-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• James H Chang, M.D.
• Lesley Chang, RD
• Linda Y. Chang, PHARM D
• Olivia Chang, RD
• Yoon Young Chang, PHARMD
• Chao Ho MD Inc
• Johnny Chao
• Faith Chappell
• Jordan Alexandra Chappell
• Kenny Chargois Jr.

• Social Worker in San Leandro, CA
• Providers in San Leandro, 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 20, 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.