John Jessen is an award-winning licensed architect and proton therapy domain expert. Over the past 35 years, John has developed a unique expertise in managing proton therapy center project design and construction both domestically and internationally. John possesses a thorough understanding of the intricacies and unique challenges that both academic and non-academic clients face when implementing a proton therapy center project.  He is an expert at assembling and leading proton Design & Construction teams and will provide Legion and its partners with optimum results.