Michael C. Stark, DO
NPI 1649260779ActiveIndividual· Family Medicine· Tomah, WI
Family Medicine (DO) with Mayo Clinic Health System-Southwest Wisconsin Region Inc, practicing in Tomah, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $993,002 for 8,503 claims, against $90,784 paid for services in 2024. Lists Mayo Clinic Health System Eau Claire Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1649260779 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Oct 28, 2005 |
| Last updated in NPPES | Sep 16, 2020 |
| Certified by provider | Sep 16, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 22938 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 412 |
|---|---|
| Services billed | 2,413 across 42 procedure codes |
| Paid by Medicare | $90,784 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,503 · 14,451 30-day fills |
|---|---|
| Patients | 506 |
| Total drug cost | $993,002 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1979 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Mayo Clinic Health System-Southwest Wisconsin Region IncLa Crosse, WI · 534 clinicians
Hospital affiliations
- Mayo Clinic Health System Eau Claire HospitalEau Claire, WI
- Mayo Clinic Health System-Franciscan Medical Center IncLa Crosse, WI
- Mayo Clinic Hlth Systm Franciscan Hlthcare SpartaSparta, WI
- Tomah Memorial HospitalTomah, WI
Other facilities
- Hospice TouchHospice · Tomah, WI
- St Croix Hospice Eau ClaireHospice · Eau Claire, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Family Medicine providers in Tomah
- 1851087787
- 1427085828
- 1508077520
- 1841499431
- 1790976520
- 1992850036
- 1467614289
- 1841725173
- 1205832557
- 1225353576
- 1740285998
- 1366608176