John Tomashek, M.D.
NPI 1013999564ActiveIndividual· Radiology, Vascular & Interventional Radiology· Mequon, WI
Radiology, Vascular & Interventional Radiology (M.D.) in Mequon, Wisconsin, trained at University of Wisconsin School of Medicine (class of 1996). Mostly services rather than prescriptions: Medicare paid $57,422 for 649 patients in 2024, with only 12 Part D claims. Boston Scientific Corporation was the largest of 3 companies reporting payments in 2025, $249.88 in all, mostly food and beverage.
Overview
| NPI | 1013999564 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 18, 2005 |
| Last updated in NPPES | Sep 11, 2024 |
| Certified by provider | Sep 11, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Vascular & Interventional Radiology Primary | 2085R0204X | 44063 | WI |
| Radiology, Diagnostic Radiology | 2085R0202X | 44063 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Interventional Radiology (IL); Practitioner - Diagnostic Radiology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 649 |
|---|---|
| Services billed | 1,051 across 183 procedure codes |
| Paid by Medicare | $57,422 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12 · 12 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $761.84 |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Diagnostic Radiology |
Medical group
- Premier Radiology Wisconsin LLCMount Pleasant, WI · 106 clinicians
Hospital affiliations
- Ascension All Saints HospitalRacine, WI
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI
- Ascension Se Wisconsin HospitalMilwaukee, WI
- Ascension St Francis HospitalMilwaukee, WI
- Orthopaedic Hospital of WisconsinGlendale, WI
Other facilities
- Select Specialty Hospital MilwaukeeLong-term care hospital · West Allis, WI
Industry payments (Open Payments)
- 2025$249.88 · 6 payments from 3 companies
- 2024$509.64 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $161.91 | 2 |
| Stryker Corporation | $51.66 | 2 |
| Surmodics, Inc. | $36.31 | 2 |
What the 2025 payments were for
- Food and Beverage$249.88 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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