William T. Witmer, MD
NPI 1033130653ActiveIndividual· Internal Medicine, Interventional Cardiology· Green Bay, WI
Internal Medicine, Interventional Cardiology (MD) in Green Bay, Wisconsin, trained at Vanderbilt University School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $368,875 for 2,878 claims, against $51,474 paid for services in 2024.
Overview
| NPI | 1033130653 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 21, 2006 |
| Last updated in NPPES | Sep 30, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 30867 | 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 - Cardiovascular Disease (Cardiology) (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,058 |
|---|---|
| Services billed | 1,636 across 20 procedure codes |
| Paid by Medicare | $51,474 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,878 · 7,538 30-day fills |
|---|---|
| Patients | 489 |
| Total drug cost | $368,875 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Vanderbilt University School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Baycare Aurora LLCGreen Bay, WI · 194 clinicians
Hospital affiliations
- Aurora Baycare Medical CtrGreen Bay, WI
- Aurora Medical Center Bay AreaMarinette, WI
- Aurora Medical Ctr Manitowoc CountyTwo Rivers, WI
- Bellin Memorial HospitalGreen Bay, WI
- Door County Medical CenterSturgeon Bay, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Interventional Cardiology providers in Green Bay
- 1487645271
- 1073716445
- 1417094772
- 1932137114
- 1316089154
- 1275628935
- 1376747733
- 1851398283
- 1174841985
- 1104836113
All Internal Medicine, Interventional Cardiology providers in Wisconsin →