Dr. William Breen, MD
Radiation Oncology (Radiation Oncology Physician)
- Medicare participating
At a glance
- Years since graduation
- 9
- In the NPI registry since
- 2017
- Medicare patients seen, 2024
- 234
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2017Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Radiation Oncology Physician primary
MN license 64064 · WI license 81689
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Mayo Clinic Hospital Rochester Rochester, MN
Medical groups
- Mayo Clinic (4,956 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 234
- Services billed
- 1,955
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 811 | 137 |
| Calculation of radiation therapy dose | 360 | 97 |
| Design and construction of complex radiation treatment device | 270 | 101 |
| Radiation treatment management, 5 treatment sessions | 156 | 65 |
| Complex radiation therapy planning | 112 | 101 |
| High precision radiation therapy planning | 70 | 63 |
| Design and construction of radiation treatment device for high precision radiation therapy | 67 | 62 |
| 3d radiation therapy planning | 38 | 34 |
| Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved | 34 | 29 |
| Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 25 | 23 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Dexamethasone Other prescribers in Rochester, MN | 17 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.