Matthew Douglas Greer, MD
NPI 1073045043ActiveIndividual· Radiology, Radiation Oncology· Tucson, AZ
Radiology, Radiation Oncology (MD) in Tucson, Arizona, trained at Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (class of 2017). In 2024 Medicare paid $92,945 for 149 patients, and Part D covered 105 of their prescriptions, 86% of them generic. Novartis Pharmaceuticals Corporation was the largest of 24 companies reporting payments in 2025, $952.48 in all, mostly food and beverage.
Overview
| NPI | 1073045043 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 29, 2017 |
| Last updated in NPPES | Jul 7, 2022 |
| Certified by provider | Jul 7, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 64479 | AZ |
| Internal Medicine | 207R00000X | MRM-1645 | ID |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Radiation Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 149 |
|---|---|
| Services billed | 1,304 across 35 procedure codes |
| Paid by Medicare | $92,945 |
Part D prescriptions in 2024
| Prescriptions (claims) | 105 · 135 30-day fills |
|---|---|
| Patients | 44 |
| Total drug cost | $3,088 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Radiation Oncology |
Medical group
- Northern Arizona Healthcare CorporationFlagstaff, AZ · 385 clinicians
Hospital affiliations
- Flagstaff Medical CenterFlagstaff, AZ
- Tuba City Regional Health Care CorporationTuba City, AZ
- Verde Valley Medical CenterCottonwood, AZ
Industry payments (Open Payments)
- 2025$952.48 · 35 payments from 24 companies
- 2024$424.14 · 17 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $119.62 | 5 |
| Merck Sharp & Dohme LLC | $104.07 | 4 |
| Histosonics, Inc. | $96.57 | 1 |
| Lilly USA, LLC | $95.08 | 3 |
| Daiichi Sankyo Inc. | $54.13 | 2 |
What the 2025 payments were for
- Food and Beverage$952.48 · 35 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 radiation oncologists in Tucson · All radiation oncologists in Arizona