Thomas Elliston Guyer

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

PSY10001721 Issued in MA

Practice address

2275 Arlington Dr
San Leandro, CA 94578-1132

Phone

(510) 317-1445

NPI assigned

Nov 18, 2015

Sex

Male

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

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 2024

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Child and Family Psychological Services PLLCGroup PAC ID 5991763823, 260 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

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.

• Child and Family Psychological Services, PLLC

  dba LifeStance Health

  • Psychologist
  • Norwood, MA
  • NPI 1912987181
  Medicare reassignment Care Compare group

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

{
    "created_epoch": "1447804800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776038400000",
    "number": "1316311053",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "375 BROADWAY APT 2-313",
            "city": "LYNNFIELD",
            "state": "MA",
            "postal_code": "019402382"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2275 ARLINGTON DR",
            "city": "SAN LEANDRO",
            "state": "CA",
            "postal_code": "945781132",
            "telephone_number": "510-317-1445"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GUYER",
        "first_name": "THOMAS",
        "middle_name": "ELLISTON",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-11-18",
        "last_updated": "2026-04-13",
        "certification_date": "2026-04-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "MA",
            "license": "PSY10001721",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Linzy Margaret Gustafson
• Cecilia Yesenia Gutierrez
• Cindy Teresa Gutierrez
• Fernando Jose Gutierrez
• Olga Gutierrez, MSW
• Erin Guzdar
• Shandra Guzman Park, LMFT
• Laura Guzman-Castaneda
• Elysia Guzman
• Janessa Guzman

• Clinical Psychologist in San Leandro, CA
• Providers in San Leandro, CA by specialty
• Clinical Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.