153 Radiation Oncology providers practice in Wisconsin, including 50 (33%) offering telehealth. The largest concentration is in Milwaukee. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
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| Radiation Oncology in Milwaukee | 40 providers |
| Radiation Oncology in Madison | 38 providers |
| Radiation Oncology in Green Bay | 8 providers |
| Radiation Oncology in La Crosse | 7 providers |
| Radiation Oncology in Appleton | 5 providers |
| Radiation Oncology in Wausau | 4 providers |
| Radiation Oncology in Marshfield | 4 providers |
| Radiation Oncology in Eau Claire | 4 providers |
| Radiation Oncology in Kenosha | 3 providers |
| Radiation Oncology in Fond Du Lac | 3 providers |
| Radiation Oncology in Waukesha | 3 providers |
| Radiation Oncology in Monroe | 2 providers |
| Radiation Oncology in Grafton | 2 providers |
| Radiation Oncology in Franklin | 2 providers |
| Radiation Oncology in Oshkosh | 2 providers |
| Radiation Oncology in Sheboygan | 2 providers |
| Radiation Oncology in Baraboo | 2 providers |
| Radiation Oncology in Janesville | 2 providers |
| Radiation Oncology in Minocqua | 2 providers |
| Radiation Oncology in Racine | 2 providers |
| Radiation Oncology in Brookfield | 2 providers |
| Radiation Oncology in Johnson Creek | 2 providers |
| Radiation Oncology in Wauwatosa | 1 providers |
| Radiation Oncology in Beloit | 1 providers |
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
There are 153 Radiation Oncology providers with active NPI records practicing in Wisconsin, according to federal NPPES data refreshed monthly.
Yes. 50 of the 153 Radiation Oncology providers in Wisconsin (about 33%) report offering telehealth services in CMS data.
Milwaukee (40), Madison (38), Green Bay (8) have the highest concentration of Radiation Oncology providers in Wisconsin.
42 of 153 Radiation Oncology providers in Wisconsin (27%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Among 101 Radiation Oncologists in Wisconsin enrolled in Medicare, 8% bill through a solo or small practice with fewer than 10 clinicians, 20% through a mid-size group of 10 to 99, and 72% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
According to CMS facility affiliation records, the Wisconsin hospitals where the most Radiation Oncologists hold privileges are Froedtert Memorial Lutheran Hospital in Milwaukee; University of Wi Hospitals & Clinics Authority in Madison; Aurora St Lukes Medical Center in Milwaukee.
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