Mark Rhyner, MD
NPI 1679668750ActiveIndividual· Family Medicine· Germantown, WI
Family Medicine (MD) in Germantown, Wisconsin, trained at Medical College of Wisconsin (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $913,193 for 5,426 claims, against $30,102 paid for services in 2024. Exact Sciences Corporation reported $25.41 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1679668750 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 4, 2006 |
| Last updated in NPPES | Dec 14, 2022 |
| Certified by provider | Dec 14, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 38101 | 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 - Family Practice (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 144 |
|---|---|
| Services billed | 828 across 31 procedure codes |
| Paid by Medicare | $30,102 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,426 · 12,202 30-day fills |
|---|---|
| Patients | 385 |
| Total drug cost | $913,193 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Froedtert Andthe Medical College of Wisconsin Community Physicians IncWauwatosa, WI · 1,285 clinicians
Hospital affiliation
- Froedtert Memorial Lutheran HospitalMilwaukee, WI
Other facilities
- Horizon Home Care and HospiceHome health agency · Milwaukee, WI
Industry payments (Open Payments)
- 2025$25.41 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $25.41 | 1 |
What the 2025 payments were for
- Food and Beverage$25.41 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 17 family medicine physicians in Germantown · All family medicine physicians in Wisconsin