Stephan Siwiec, PHD

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

3987-57 Issued in WI

Practice address

6402 Odana Rd Ste 304
Madison, WI 53719-1123

Phone

(608) 465-4565

NPI assigned

Mar 2, 2026

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 WI

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, 2019

Medicare assignment

May accept Medicare assignment

Group practices

Keri Brown PHD, LLC Dba Pure Ocd TherapyGroup PAC ID 1850761800, 3 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

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.

• Keri Brown PHD, LLC Dba Pure Ocd Therapy

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Madison, WI
  • NPI 1477262061
  Medicare reassignment Care Compare group

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

{
    "created_epoch": "1772409600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772409600000",
    "number": "1487509972",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4501 BELLINGRATH ST",
            "city": "MCFARLAND",
            "state": "WI",
            "postal_code": "535588752",
            "telephone_number": "617-721-3480"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6402 ODANA RD STE 304",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537191123",
            "telephone_number": "608-465-4565"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIWIEC",
        "first_name": "STEPHAN",
        "credential": "PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-03-02",
        "last_updated": "2026-03-02",
        "certification_date": "2026-03-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "WI",
            "license": "3987-57",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Julie Ann Sironi, S.A.C.I.T.
• Vonnie Sisauyhoat, PH.D.
• George A Sisson III, MD
• Kayli Sitte, PA
• Kimberly A Sivertsen
• Patricia Nicole Siy, MD
• Joseph A Sizensky, MD
• Brett Patrick Sjoberg, MD
• Heidi L Sjoberg, LPC
• Samantha Skaife, NP

• Clinical Psychologist in Madison, WI
• Providers in Madison, WI by specialty
• Clinical Psychologist in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 2, 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.