Donn Marshall Davis, MD
NPI 1003899816ActiveIndividual· Radiology, Radiation Oncology· Prescott, AZ
Radiology, Radiation Oncology (MD) in Prescott, Arizona, trained at University of Nebraska College of Medicine (class of 1983). In 2024 Medicare paid $1,327,866 for 401 patients, and Part D covered 60 of their prescriptions, 88% of them generic. Amgen Inc. was the largest of 18 companies reporting payments in 2025, $700.91 in all, mostly food and beverage.
Overview
| NPI | 1003899816 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 25, 2005 |
| Last updated in NPPES | Mar 10, 2022 |
| Certified by provider | Mar 10, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 58993 | AZ |
| Specialist | 174400000X | 39768 | CO |
| Radiology, Radiation Oncology | 2085R0001X | G53197 | CO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 401 |
|---|---|
| Services billed | 7,512 across 38 procedure codes |
| Paid by Medicare | $1,327,866 |
Part D prescriptions in 2024
| Prescriptions (claims) | 60 · 80 30-day fills |
|---|---|
| Patients | 37 |
| Total drug cost | $685.75 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Nebraska College of Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Radiation Oncology |
Medical groups
- City of Hope Medical Group of Arizona LLCGoodyear, AZ · 160 clinicians
- Arizona Oncology Associates PCTucson, AZ · 40 clinicians
Hospital affiliations
- City of Hope Cancer Center PhoenixGoodyear, AZ
- Yavapai Regional Medical CenterPrescott, AZ
Industry payments (Open Payments)
- 2025$700.91 · 25 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $146.08 | 1 |
| Astrazeneca Pharmaceuticals LP | $81.90 | 3 |
| Novartis Pharmaceuticals Corporation | $59.08 | 3 |
| Merck Sharp & Dohme LLC | $54.39 | 2 |
| Eisai Inc. | $42.31 | 2 |
What the 2025 payments were for
- Food and Beverage$700.91 · 25 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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