Peter Johnstone received his undergraduate degree in chemistry from the United States Naval Academy in 1979, and served in the Navy until retirement in 2003. He earned a Master's degree in Communication from Oklahoma University in 1985, and his medical degree from the Uniformed Services University of Health Sciences School of Medicine, Bethesda, MD, in 1989. His Residency in Radiation Oncology was with the National Cancer Institute in 1993, and he completed additional training in Medical Acupuncture at the University of California, Los Angeles. In 2007, he was recruited to IU School of Medicine as Chair and William A. Mitchell Professor of Radiation Oncology.
His research interests include cancer survivorship; specifically, he has piloted the use of Complementary and Alternative therapies for symptom relief. Dr. Johnstone is known internationally for publications on using acupuncture to help patients recover salivary function after head and neck radiation therapy, and on the use of manipulative therapy for lymphedema. He and his team have studied the role of health disparities in treatment decisions and outcomes for underprivileged patients with breast, lung, and head and neck cancer, as well as the unique needs of young adult survivors of pediatric cancer.
Dr. Johnstone is a Fellow of the American College of Radiology, and in 2007 served as President of the Society for Integrative Oncology. He is Editor-in-Chief of the journal Current Problems in Cancer.