Physician Profiles

The physicians at Carson-Tahoe Radiation Oncology Associates have dedicated their careers to the practice of radiation oncology.

Our physicians provide care in Carson City/Northern Nevada area.

Our physicians are on the medical staff at:

Carson-Tahoe Regional Medical Center

Saint Mary's Regional Medical Center

Renown Medical Center

Our physicians are members of the American Society for Therapeutic Radiology and Oncology, The American Society of Clinical Oncology, American College of Radiology, American College of Radiation Oncology, Nevada Oncology Society, Nevada State Medical Association.

Dr. Beth Hummer

Dr. Hummer received her medical degree from the Medical College of Ohio in 1986. She did her internship in internal medicine at the Medical College of Ohio. Dr. Hummer then completed her residency in radiation oncology at Henry Ford Hospital in Detroit, Michigan in 1990 and was chief resident during her final year. After her residency, she stayed at Henry Ford Hospital as a senior staff physician in clinical practice, as well as doing research. In 1992, Dr. Hummer moved to Reno and has since been in private practice with Radiation Oncology Associates. Dr. Hummer is board certified in radiation oncology by the American Board of Radiology.

Dr. Gary Campbell

Dr. Campbell is a native Nevadan, growing up at Lake Tahoe. After graduation from U.C. Irvine with a degree in biological sciences he attended the University Of Nevada School of Medicine, graduating in 1983. He completed a rotating internship followed by a residency in radiation oncology at Indiana University Hospitals and Clinics in Indianapolis, Indiana. During his training he was chief resident and also an American Cancer Society Clinical Fellow in his final year. He returned home to Nevada in 1987 and joined Radiation Oncology Associates in private practice. He has received additional training in prostate brachytherapy. Dr. Campbell is board certified in radiation oncology by the American Board of Radiology.

Dr. Celine Ord

Dr. Ord received her medical degree from the University of Texas Health Science Center in Houston, Texas in 2007. She completed her internship with the Department of Medicine at Lyndon B. Johnson Hospital in Houston, Texas in 2008. She then went on to complete her residency in 2012 with the Department of Radiation Oncology at Oregon Health & Science University in Portland, Oregon, where she also served as Chief Resident for 2 years. She was board certified in Radiation Oncology by the American Board of Radiology in 2013. She previously served as a Principal Investigator on a national trial for Head and Neck Cancer. . She has published extensively on various radiation oncology topics, and is one of the chief editors of Radiation Oncology Study Guide – a question-based board review book for initial and maintenance of certification board examinations, now in its second edition. Dr. Ord and her husband, Dr. Justin Ord, are thrilled to have relocated closer to their West Coast based families.

Sandra Shirley PA-C.

Sandy is a native Nevadan and graduated from MEDEX Northwest School of Medicine, University of Washington-Seattle in 2000. She completed multiple clinical rotations in Family Medicine, Psychiatry, Orthopedics, Inpatient medicine and Medical Oncology. She is board certified by the National Commission on Certification of Physician Assistants in 2000. Sandy has been employed by CTROA as a physician assistant since September 2000. She was previously licensed as a Radiation Therapist and Radiologic Technologist with Radiation Oncology since 1978.