Leadership & Physicians

Timothy A. Jamieson, M.D., Ph.D.
Dr. Jamieson received his medical degree and PhD from the University of Virginia and completed residency training in radiation oncology at Duke University Medical Center, where he served as Chief Resident and received the American Radium Society Young Oncologist Award.
He is Medical Director of the Cancer Care Centers of Southeast Georgia Health System and Chair of the Health System’s Cancer Committee and Multidisciplinary Tumor Board. Dr. Jamieson has extensive experience in advanced radiation techniques, including CyberKnife® radiosurgery, and has treated 3,200+ prostate cancer patients using this technology.

Robert Hong, M.D.
Dr. Robert Hong is a Phi Beta Kappa graduate of the University of North Carolina at Chapel Hill and earned his M.D. from the Medical College of Georgia. He trained as a Research Fellow at Harvard Medical School and Brigham & Women’s Hospital, focusing on emerging diagnostic technologies.
Following an internship at Johns Hopkins/Sinai, Dr. Hong completed his radiation oncology residency at Loyola University Medical Center in Illinois, where he served as Chief Resident and received the Radiological Society of North America’s Resident Research and Education Award.
Dr. Hong is a nationally recognized speaker and published expert in advanced cancer treatment, breast and prostate oncology, and medical informatics. He has earned scholarships from the American College of Radiation Oncology and the American Brachytherapy Society.
He is the Founder of Arlington Radiation Oncology (ARO) and serves as Medical Director of Radiation Oncology at both Virginia Hospital Center and Reston Hospital Center. He also holds clinical faculty positions at Georgetown University and George Washington University. With over a decade of experience, Dr. Hong has treated more than 10,000 patients using CyberKnife.
Shared Commitment
Both physicians bring decades of experience, national leadership, and deep expertise in precision radiation therapy—delivering advanced cancer care with a focus on clinical excellence, patient safety, and individualized treatment.

Abdul Rashid, MPhil, PhD
Dr. Rashid oversees treatment planning, equipment quality assurance, and radiation safety across CRC’s radiation oncology program. He specializes in implementing advanced technologies including VMAT, stereotactic radiosurgery (SRS), SBRT, and adaptive therapy.
He earned his PhD in Radiation Physics from the University of Bonn / Quaid-i-Azam University and completed residency training and a postdoctoral fellowship at Johns Hopkins Hospital in Baltimore. Dr. Rashid is actively engaged in research focused on AI-assisted treatment planning and advanced dosimetric modeling, with multiple peer-reviewed publications and frequent presentations at AAPM national meetings.

Tracey Simmons, CMD
With nearly 30 years of experience in radiation oncology, Tracey Simmons designs and optimizes radiation treatment plans that prioritize precision, safety, and clinical effectiveness.
She works closely with physicians, physicists, and therapists to deliver evidence-based, patient-centered care and brings deep technical expertise to complex treatment planning across a broad range of diagnoses.

Paul D. Bowers
Paul Bowers brings decades of senior leadership experience across global financial institutions, including Bear Stearns, Cantor Fitzgerald, Lazard Frères, Lehman Brothers, Oppenheimer & Co., and Bank of America Merrill Lynch.
At CRC, he focuses on strategic growth, partnerships, and operational leadership. His background spans fixed income, private and public equity, sovereign debt, and direct investments. Mr. Bowers holds a Bachelor of Arts from Texas Christian University.