Mevion Medical Systems is a leading global provider of proton therapy systems for use in radiation treatment of cancer patients. Mevion Medical Systems delivers high-quality, cost-effective solutions—making proton therapy accessible to patients worldwide. As a result, Mevion has more systems sold, installed and treating than any other compact proton therapy system manufacturer.

Mevion Medical Systems was founded with the vision of transforming radiation therapy to provide the best possible cancer therapy for all patients worldwide. This is accomplished through Mevion’s innovative S250 Series of Proton Therapy Systems.

The MEVION S250^TM Series is elegantly designed to deliver high-powered, efficient proton therapy treatments—optimizing both the outcomes and the economics of proton therapy. Built upon the world’s only gantry-mounted proton accelerator and benefitting from our patented direct beam technology, the MEVION S250 Series delivers on the therapeutic promise of proton therapy while enhancing beam quality, stability and uptime. The result is reduced system complexity, higher reliability and throughput, and lower capital and operating costs—making the MEVION S250 Series a compelling, financially viable solution for all cancer centers.

Mevion was founded in 2004 and is privately held. Mevion is based in Littleton, Massachusetts, with international offices in the United Kingdom, China and Japan.