Originally from West Palm Beach, Florida, Williams is a 1983 graduate and 13th president of Hampton University. He is a three-star general and retired from the U.S. Army in 2020.

MaryBeth Sullivan, the Hampton University Proton Therapy Institute’s (Hampton Proton) executive director, is a nationally board-certified radiation therapist who completed her training and eventually worked at Massachusetts General Hospital. Dr. Keppel recruited her in 2010 to help open Hampton Proton. She returned in July 2022 to start her new position.

Stephen Towe is the Chief Executive Officer and Co-Founder of Leo Cancer Care. Having driven the design of the Leo Cancer Care technology in Australia, Towe took over the role of CEO in 2018. Since then, Stephen has led the expansion of Leo across both the US and Europe.

Dr. Alejandro Carabe is the Chief Medical Physicist at Hampton Proton. He is a native of Seville, Spain, and has published more than 30 papers and holds several patents on proton-related and medical technology.

Rock Mackie is the Board Chairman and Co-Founder of Leo Cancer Care. He is a Professor Emeritus of Medical Physics and Human Oncology at the University of Wisconsin-Madison. Mackie co-founded the Geometrics Corporation to develop the Pinnacle Radiotherapy Treatment Planning System (TPS), now owned by Philips Medical Corporation and once the largest-selling TPS in the world.

In November 2021, The Department of Energy’s Thomas Jefferson National Accelerator Facility appointed Dr. Cynthia Keppel as Jefferson Lab’s Associate Director for Experimental Nuclear Physics. In this role, Keppel oversees more than 170 Jefferson Lab staff members. For her leadership during the establishment of the Hampton University Proton Therapy Institute, she is considered “the mother of Hampton Proton.”