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Learn More About Proton Therapy
Learn More About Proton Therapy

About Mevion

Mevion Medical Systems exists to deliver on the promise of proton therapy for cancer centers, clinicians and patients worldwide. We invented compact proton therapy and are continuing to transform the industry and patient care with the MEVION S250 Series™.

As a testament to the proven results delivered by our systems, we have more systems installed and treating patients than any other compact proton therapy manufacturer.

Powerful Medicine. Smart Business.

The MEVION S250 Series integrates our patented technology at the very forefront of proton therapy to deliver exceptional beam quality, industry-leading uptime, reduced system size and complexity, higher reliability and throughput, and lower capital and operating costs. Because of these advantages, more NCI-Designated Cancer Centers choose Mevion than any other proton therapy system provider.

The Mevion advantage is clear:

  • Superior clinical performance
  • Highly efficient design
  • Lower cost and rapid deployment
  • Proven profitability

Leadership Team

  • Joseph K. Jachinowski

    President, Chief Executive Officer, Director

    Joseph K. Jachinowski

    President, Chief Executive Officer, Director

    With more than thirty years of experience in the field of oncology, Joe brings an unmatched depth of expertise and experience to our company. He has served as Mevion’s chief executive officer and member of the board of directors since 2009 and president since 2012. Since joining the company, Joe has overseen the development of industry-leading technologies and our growth into a leading global provider of proton therapy systems.

    Joe cofounded IMPAC Medical Systems and served as its president and chief executive officer from 1990 through the company’s initial public offering and sale to Elekta in 2005. After the sale, Joe was an executive vice president of Elekta for four years running global R&D and North American commercial operations. Joe began his career at Varian Medical Systems, Inc., where he led the team that developed linear accelerators from 1983 to 1990.

    He holds a Bachelor of Science from Ohio University and Master of Science from Washington State University.