Georgianna Simone Marchesseault, ASW

Primary specialty

Social WorkerTaxonomy code 104100000X

License

133417 Issued in CA

Practice address

3800 Coolidge Ave
Oakland, CA 94602-3399

Phone

(510) 482-2244

NPI assigned

Jul 13, 2023

Last updated

Sep 12, 2025By the provider in NPPES

Sex

Female

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

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• County of San Mateo

  dba Shasta

  • Community/Behavioral Health Agency
  • Redwood City, CA
  • NPI 1528432481
  NPD (past)

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

{
    "created_epoch": "1689206400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757635200000",
    "number": "1982383352",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3800 COOLIDGE AVE",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946023399",
            "telephone_number": "510-482-2244"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3800 COOLIDGE AVE",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946023399",
            "telephone_number": "510-482-2244"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARCHESSEAULT",
        "first_name": "GEORGIANNA",
        "middle_name": "SIMONE",
        "credential": "ASW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-07-13",
        "last_updated": "2025-09-12",
        "certification_date": "2025-09-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "CA",
            "license": "133417",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Natalie V Maravillas
• Christina Marbrey
• Paul Joseph Marc, M.D. PH.D.
• Marjoe Marcelus
• Eden Marchant, LCSW
• Thomas Marchevsky
• Jaclyn Marchio
• Danielle Lynn Marchman
• Leanne T Marcotrigiano, M.D.
• Alon Marcus, DOM

• Social Worker in Oakland, CA
• Providers in Oakland, CA by specialty
• Social Worker in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 12, 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.