William Stephen, LPC

Primary specialty

Professional CounselorTaxonomy code 101YP2500X

License

3909 Issued in WI

Practice address

4811 S 76TH St
Suite 208
Greenfield, WI 53220-4364

Phone

(414) 817-9331

Fax

(414) 817-0442

NPI assigned

Oct 26, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Other identifiers 1

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

Mental Health Counselor

Education

Other, 1994

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Cornerstone Counseling Services IncGroup PAC ID 1456256023, 338 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: lifestancehealth.williamstephen@149809.advancedmd-direct.com

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.

• Cornerstone Counseling Services, Inc

  • Mental Health Counselor
  • Brookfield, WI
  • NPI 1033127246

  Addiction (Substance Use Disorder)

  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1161820800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747872000000",
    "number": "1326123175",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "16535 W BLUEMOUND RD",
            "address_2": "SUITE 200",
            "city": "BROOKFIELD",
            "state": "WI",
            "postal_code": "530055936",
            "telephone_number": "262-789-1191",
            "fax_number": "262-821-6180"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4811 S 76TH ST",
            "address_2": "SUITE 208",
            "city": "GREENFIELD",
            "state": "WI",
            "postal_code": "532204364",
            "telephone_number": "414-817-9331",
            "fax_number": "414-817-0442"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEPHEN",
        "first_name": "WILLIAM",
        "name_prefix": "Mr.",
        "credential": "LPC",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-10-26",
        "last_updated": "2025-05-22",
        "certification_date": "2025-05-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "WI",
            "license": "3909",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "397-857-00",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sharon Louise Cello Starks, PTA
• James Edward Steffen, RPH
• Jeanne Marie Steffes, OTR
• Michele M Steger, LPN
• Jamie Lynn Steinke, COTA
• Emily Sternitzky
• Elizabeth Stetter, LPC, NCC
• Gary C Steven, M.D.
• Rene S Steven, M.S. CCC-SLP
• Lauren D Stieber, APNP

• Professional Counselor in Greenfield, WI
• Providers in Greenfield, WI by specialty
• Professional Counselor in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 22, 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.