Quick answers
- Where does William Stephen see patients?
- Medicare's clinician data lists 1 practice location in Greenfield, WI. Call before your visit to confirm the address.
- What is William Stephen's specialty?
- Medicare lists Mental Health Counselor as the primary specialty.
- Does William Stephen accept Medicare assignment?
- Yes. Medicare's clinician data says William Stephen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does William Stephen offer telehealth?
- Medicare's clinician data says William Stephen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William Stephen?
- (262) 789-1191, as listed in official Medicare / NPI Registry data.
- What is William Stephen's NPI number?
- 1326123175. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where William Stephen is enrolled with Medicare (CMS data updated 2026-10-02).
- 4811 S 76th St, Suite 208Greenfield, WI 53220 (262) 789‑1191
Group practices
Medicare enrollment lists William Stephen as a member of this group (CMS data updated 2026-10-02).
- Cornerstone Counseling Services Inc353 clinicians in the group
Specialties
- Mental Health Counselorprimary
Other mental health counselors in Greenfield
Clinicians with the same Medicare primary specialty in Greenfield, WI — not a recommendation.
Clinician information
| Graduation year | 1994 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1326123175 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians