Erik Thomas Sowder, PH.D.

Primary specialty

Cognitive & Behavioral PsychologistTaxonomy code 103TB0200X

Practice address

110 Gardenside Dr Apt 501
San Francisco, CA 94131-1377

Phone

(707) 369-2315

NPI assigned

Nov 23, 2009

Sex

Male

Sole proprietor

Yes

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 CA

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, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

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.

• Trauma & Stress Recovery, a Medical Group Inc.

  • Clinical Psychologist
  • Oakland, CA
  • NPI 1528676269

  Cognitive & Behavioral

  NPD (past)

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

{
    "created_epoch": "1258934400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765152000000",
    "number": "1366770703",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "110 GARDENSIDE DR APT 501",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941311377"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "110 GARDENSIDE DR APT 501",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941311377",
            "telephone_number": "707-369-2315"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SOWDER",
        "first_name": "ERIK",
        "middle_name": "THOMAS",
        "credential": "PH.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2009-11-23",
        "last_updated": "2025-12-08",
        "certification_date": "2025-12-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TB0200X",
            "taxonomy_group": "",
            "desc": "Psychologist, Cognitive & Behavioral",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Heather Southwell, RD, MS
• Erica F Southworth, NP
• Patricia Souto
• Damien Monroe Souza
• Deanna Soward
• John Stephen Sowinski, MD
• Jena Soykok
• Andrea Spach
• Cody Marie Spaeth
• Leanne Spagnola, LMFT

• Cognitive & Behavioral Psychologist in San Francisco, CA
• Providers in San Francisco, CA by specialty
• Cognitive & Behavioral Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 8, 2025; 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.