Thalia Guillen, ACSW

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

License

103266 Issued in CA

Practice address

1640 N St
Merced, CA 95340-4657

Phone

(209) 381-4547

NPI assigned

Sep 30, 2021

Sex

Female

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

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.

• Aspiranet-Merced Office

  • Case Management Agency
  • Merced, CA
  • NPI 1427762772
  NPD (past)
• Le Grand Union Elementary School District

  • Local Education Agency (LEA)
  • Le Grand, CA
  • NPI 1477909968
  NPD (past)
• Merced County Office of Education

  • Local Education Agency (LEA)
  • Winton, CA
  • NPI 1700073343
  NPD (past)
• Planada Elementary School District

  • Local Education Agency (LEA)
  • Planada, CA
  • NPI 1891981569
  NPD (past)

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

{
    "created_epoch": "1632960000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763510400000",
    "number": "1851063697",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1640 N ST",
            "city": "MERCED",
            "state": "CA",
            "postal_code": "953404657",
            "telephone_number": "209-381-4547"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1640 N ST",
            "city": "MERCED",
            "state": "CA",
            "postal_code": "953404657",
            "telephone_number": "209-381-4547"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "7265 Almond Ave",
            "address_purpose": "LOCATION",
            "city": "Winton",
            "state": "CA",
            "postal_code": "953889325",
            "country_code": "US",
            "telephone_number": "209-357-6180",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6981 Chestnut Lane",
            "address_purpose": "LOCATION",
            "city": "Winton",
            "state": "CA",
            "postal_code": "95388",
            "country_code": "US",
            "telephone_number": "209-357-6891",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6300 Cypress Ave",
            "address_purpose": "LOCATION",
            "city": "Winton",
            "state": "CA",
            "postal_code": "953889547",
            "country_code": "US",
            "telephone_number": "209-357-6189",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "9525 E. Broderick Street",
            "address_purpose": "LOCATION",
            "city": "Planada",
            "state": "CA",
            "postal_code": "95365",
            "country_code": "US",
            "telephone_number": "209-382-0272",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "13071 E. Le Grand Road",
            "address_purpose": "LOCATION",
            "city": "Le Grand",
            "state": "CA",
            "postal_code": "95333",
            "country_code": "US",
            "telephone_number": "209-389-4515",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "7160 W. Walnut Avenue",
            "address_purpose": "LOCATION",
            "city": "Winton",
            "state": "CA",
            "postal_code": "95388",
            "country_code": "US",
            "telephone_number": "209-357-6182",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "7000 N. Center Street",
            "address_purpose": "LOCATION",
            "city": "Winton",
            "state": "CA",
            "postal_code": "953889399",
            "country_code": "US",
            "telephone_number": "209-357-6175",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "161 S. Plainsburg Road",
            "address_purpose": "LOCATION",
            "city": "Planada",
            "state": "CA",
            "postal_code": "95365",
            "country_code": "US",
            "telephone_number": "209-382-0768",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "9722 Haskell Avenue",
            "address_purpose": "LOCATION",
            "city": "Planada",
            "state": "CA",
            "postal_code": "95365",
            "country_code": "US",
            "telephone_number": "209-382-0756",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GUILLEN",
        "first_name": "THALIA",
        "credential": "ACSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-09-30",
        "last_updated": "2025-11-19",
        "certification_date": "2025-11-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "CA",
            "license": "103266",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Corrina Mejia Guerrero
• Johnathan Humberto Guerrero
• Marissa Nicole Guerrero
• Luis Gerardo Guevara
• Jose Luis Guillen
• Donald Gumm, D.C.
• Esmeralda Gutierrez Meza
• Amanda Mellina Gutierrez, ACSW
• Emerance Suzanne Gutierrez
• Linda A Gutierrez, AMFT

• Mental Health Counselor in Merced, CA
• Providers in Merced, CA by specialty
• Mental Health Counselor in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 19, 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.