David Thomas Vonk, MD
NPI 1194988204ActiveIndividual· Radiology, Radiation Oncology· Tucson, AZ
Radiology, Radiation Oncology (MD) in Tucson, Arizona, trained at University of Wisconsin School of Medicine (class of 2008). 346 Medicare patients in 2024, $1,080,341 paid; nearly all of their 110 Part D prescriptions were generic (98%). Astrazeneca Pharmaceuticals LP was the largest of 26 companies reporting payments in 2025, $1,473 in all, mostly food and beverage.
Overview
| NPI | 1194988204 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 8, 2008 |
| Last updated in NPPES | Mar 16, 2022 |
| Certified by provider | Mar 16, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 44986 | AZ |
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 - Radiation Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 346 |
|---|---|
| Services billed | 35,756 across 134 procedure codes |
| Paid by Medicare | $1,080,341 |
Part D prescriptions in 2024
| Prescriptions (claims) | 110 · 131 30-day fills |
|---|---|
| Patients | 49 |
| Total drug cost | $896.72 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Radiation Oncology |
Medical groups
- Tmc Medical NetworkTucson, AZ · 281 clinicians
- TmconeGreen Valley, AZ · 96 clinicians
- Arizona Oncology Associates PCTucson, AZ · 40 clinicians
Hospital affiliation
- Tucson Medical CenterTucson, AZ
Industry payments (Open Payments)
- 2025$1,473 · 64 payments from 26 companies
- 2024$1,844 · 83 payments from 30 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $221.63 | 10 |
| Janssen Biotech, Inc. | $203.04 | 10 |
| Novartis Pharmaceuticals Corporation | $182.06 | 7 |
| Merck Sharp & Dohme LLC | $101.10 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $94.03 | 3 |
What the 2025 payments were for
- Food and Beverage$1,473 · 64 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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