Stan L. Markus, MD
NPI 1134103641ActiveIndividual· Surgery· Oconomowoc, WI
Surgery (MD) in Oconomowoc, Wisconsin, trained at Wright State University Boonshoft School of Medicine (class of 1982). In 2024 Medicare paid $38,965 for 126 patients, and Part D covered 643 of their prescriptions, 77% of them generic. Organogenesis Inc. reported $136.69 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1134103641 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 30, 2005 |
| Last updated in NPPES | Nov 29, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 28258 | WI |
| Colon & Rectal Surgery | 208C00000X | 28258 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 126 |
|---|---|
| Services billed | 909 across 25 procedure codes |
| Paid by Medicare | $38,965 |
Part D prescriptions in 2024
| Prescriptions (claims) | 643 · 672 30-day fills |
|---|---|
| Patients | 183 |
| Total drug cost | $8,623 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | Wright State University Boonshoft School of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | General Surgery |
Medical group
- Prohealth Medical Group IncMukwonago, WI · 479 clinicians
Hospital affiliations
- Oconomowoc Memorial HospitalOconomowoc, WI
- Waukesha Memorial HospitalWaukesha, WI
Other facilities
- Prohealth Home CareHome health agency · Waukesha, WI
Industry payments (Open Payments)
- 2025$136.69 · 3 payments from 1 company
- 2024$228.16 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organogenesis Inc. | $136.69 | 3 |
What the 2025 payments were for
- Food and Beverage$136.69 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other general surgeons in Oconomowoc
- 1457311441
- 1710946132
- 1023080207
- 1679546584
- 1780269449