Jessen Consulting | Project Management
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about us

Jessen Proton Therapy was founded by John Jessen for the sole purpose of helping people execute Proton Therapy projects worldwide.

We bring years of experience coordinating and implementing Proton Therapy projects around the globe.

From affordable compact solutions to multi-room systems, we provide hands-on proton know-how to the process ensuring success on every project.

Recognized as a trusted adviser across the proton therapy community, we work with you and your team to help develop and meet project schedules, budgets and quality.


Most importantly, we listen. We want to understand your goals defining the project parameters and help you translate them into a successful proton therapy project approach.


Program Management
Owner Representation
Project Scope Development
Front-End Planning
Business Development
Team Selection
Business Case Support
Feasibility Planning
Budgets & Benchmarking
Cost Control & Reporting
Design & Engineering Coordination
Change Order Mitigation
Invoice Review
Schedule Oversight
RFP & Bidding Coordination
Technical Review Support
Value Engineering Support
Commissioning Coordination


Proton projects are complex. Together, we’ll assemble the right team for your proton project leveraging collective knowledge. We’ll add our own expertise to ensure success.


John Jessen has over 30 years of experience helping people execute proton therapy projects worldwide. As a licensed architect, he is an expert at assembling and leading proton teams while working with the client to achieve optimum results. He’s a hands-on collaborator.

John Jessen has participated in the following proton therapy projects.

  • UCSF Mission Bay
  • MD Anderson
  • Memorial Sloan Kettering
  • Johns Hopkins Sibley
  • Hefei China Heavy Ion
  • Hampton University
  • Scott Hamilton Provision
  • Emory University
  • Baptist Health South Florida
  • University of Texas Southwest
  • SAH Muscat Oman
  • SAH Qatar
  • Delray Beach Medical Center
  • Provision Knoxville
  • SAH Bahrain
  • INOVA Schar Cancer Institute
  • Kettering Hospital
  • OSF St Francis
  • Boldrini Children’s Hospital
  • Northern Illinois University
  • Jupiter Medical City
  • Lioness Light & Heavy Ion
  • Panama Proton
  • University of Miami
  • Stanford
  • SUNY Upstate


Good listeners make great leaders. Whether your proton team is already assembled or you need our help bringing together top expertise, we’ll leverage our years of experience leading proton teams through the unique process.

listen leverage lead

1916 Pike Place Suite 12 #1380 | Seattle, WA | 98101

37354 John Mosby Highway | Middleburg, VA | 20117
(202) 288-9119 |