Sergio Jr. Hermosillo, ACSW

Primary specialty

Social WorkerTaxonomy code 104100000X

License

128854 Issued in CA

Practice address

3745 Overland Ave
Los Angeles, CA 90034-6311

Phone

(310) 392-5855

NPI assigned

Apr 15, 2025

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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.

• Step Up on Second Street, Inc.

  • Community/Behavioral Health Agency
  • Los Angeles, CA
  • NPI 1669193413
  NPD

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

{
    "created_epoch": "1744675200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1745280000000",
    "number": "1851187181",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3745 OVERLAND AVE",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900346311",
            "telephone_number": "310-392-5855"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3745 OVERLAND AVE",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900346311",
            "telephone_number": "310-392-5855"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HERMOSILLO",
        "first_name": "SERGIO JR.",
        "credential": "ACSW",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-04-15",
        "last_updated": "2025-04-22",
        "certification_date": "2025-04-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "ASW128854",
            "primary": false
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "CA",
            "license": "128854",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• James Hermon III
• Adriana Hermosillo
• Carlos Hermosillo
• Carol Hermosillo
• Leslie Grande Hermosillo
• Daniel Jared Hermosisima
• Joan Rae M Hermosura, PT
• Kerstin Hern
• Roberto Hernal
• Eve Nathalia Hernandez Alvarez

• 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 Apr 22, 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.