Mercy Radiation Oncology - Jefferson

1350 Highway 61 South
Festus, MO 63028
Fax: (636) 931-4818
Services are provided by Mercy Hospital Jefferson Learn more »
Hours of Operation:
Monday-Friday: 7:30 a.m. - 4 p.m.
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Our radiation oncology team works closely with your medical oncologist and referring physician to provide the most effective treatment for your condition. Backed by years of research and experience, our providers use the latest technology to ensure the proper dosage and monitor your condition. We work with you one-one-one and are dedicated to helping you overcome this disease and resume your life.

How radiation oncology can help:

  • Highly targeted radiation kills tumors.
  • Maximum radiation is focused directly on the tumor, with less impact on healthy tissues and organs … and less side effects.
  • Radiation may be used with other treatments, like chemotherapy, hormone therapy and immunotherapy, to fight against the growth of new cancer cells.

Advanced Linear Technology

Mercy Hospital Jefferson has the most advanced linear technology in the region, the Versa HD™. The new linear accelerator system, which now treats a broader spectrum of cancers, expands patient treatment capabilities with extreme precision, high reliability and superior tumor performance.

At Mercy, we’re dedicated to providing individualized cancer care. Through the use of this linear technology, we are able to offer improved treatment times, fewer side effects, and reduced recovery times. Watch the video below to learn more.

In the News

Radiation oncologist Jaymeson Stroud, MD, was featured on an HEC-TV Innovations story about Mercy's heart-sparing radiation techniques for women with left-sided breast cancer. Watch the story.

Our Providers

Timothy R. O'Leary, MD, Mercy
Radiation Oncology