Thompson Proton Center Physicians
- 2 minute read.
- Last Updated: 9/16/2025
Meet our Thompson Proton Center physicians specializing in radiation oncology:

Ryan Grover, MD
Radiation Oncologist and Medical Director
Residency
Radiation Oncology, Loma Linda University Medical Center
Medical School
Univeristy of Southern California

Brion Shin, MD
Radiation Oncologist
Residency
Radiation Oncology,
Loma Linda University Medical Center
Medical School
Loma Linda University Medical Center

Allen Meek, MD
Radiation Oncologist
Residency
Radiation Oncology, Johns Hopkins University
Medical School
Johns Hopkins University
About Us
Thompson Oncology Group and Thompson Proton Center physicians are part of Covenant Health, the region’s top performing healthcare network. Community-owned and headquartered in Knoxville, Covenant Health includes nine acute-care hospitals, numerous outpatient and physician clinic locations, and specialty services for behavioral health, oncology, rehabilitation, home care, and community wellness and outreach programs. With more than 11,000 employees and nearly 1,500 affiliated physicians system-wide, Covenant Health is recognized regionally and nationally for quality and patient satisfaction. The health system has been named multiple times in Becker’s annual list of “150 Top Places to Work in Healthcare.” Visit www.covenanthealth.com to learn more.