Dr. William Dunn is a board-certified radiation oncologist with SSM Health Cancer Care in Mt. Vernon, Illinois. He specializes in advanced cancer treatments, including Intensity Modulated Radiation Therapy (IMRT), Image Guided Radiation Therapy (IGRT), Stereotactic Radiosurgery (SRS), and Stereotactic Body Radiation Therapy (SBRT). With over 20 years of experience treating breast, brain, lung, head and neck, colon, prostate, and skin cancers, Dr. Dunn is committed to delivering personalized, compassionate care.

He is an active member of both the American Society for Radiation Oncology (ASTRO) and the American Society of Clinical Oncology (ASCO). Dr. Dunn is also fluent in Spanish and French and is a veteran who served in the United States Navy.