Mevion

Mevion Medical Systems, Inc. (formerly known as Still River Systems, Inc.) is a radiation therapy company dedicated to advancing cancer treatment. As a pioneer in modern proton therapy systems, Mevion transforms advancements in medical technology and science into practical clinical realities, providing innovative, safe, and effective solutions. Mevion's flagship product, the MEVION S250 Proton Therapy System, is designed to preserve all the therapeutic advantages of traditional proton therapy systems while eliminating barriers related to size, cost, and complexity. By realizing this vision, Mevion has forever changed the economics and accessibility of proton therapy worldwide. Founded in 2004, Mevion is a privately held company headquartered in the Greater Boston area, with international offices in the UK and Japan.