Trained as a health and medical physicist, Dr. Bushberg is certified by several national professional boards with specific sub-specialty certification in radiation protection and medical physics and is an expert on the biological effects and safety of ionizing and non-ionizing radiation. Dr. Bushberg received both a Masters of Science and Ph.D. from the Department of Bionucleonics at Purdue University. Prior to coming to the University of California, Davis, Dr. Bushberg was on the faculty of Yale University School of Medicine. In addition to his academic appointment in Radiology, Dr. Bushberg is Director of Health Physics Programs at the University of California at Davis. Dr. Bushberg has served as an advisor to government agencies and institutions throughout the nation and around the world on the biological effects of ionizing and non-ionizing radiation exposure. Dr. Bushberg has responsibility for medical postgraduate education in medical physics, radiation (ionizing and non-ionizing) protection, and radiation biology. The textbook "The Essential Physics of Medical Imaging 2nd Edition", authored by Bushberg, Seibert, Leidholdt, and Boone, is used extensively by Radiology Residency programs through the U.S.

Dr. Bushberg developed the Radiological Emergency Medical Management Program at UC Davis Heath System. This program provides training and support for clinical services in the safe and effective management of radiation exposed and contaminated patients. While on the faculty of Yale University School of Medicine, developed a similar program for the State of Connecticut and was appointed by Gov. Deukmejian to chair the expert advisory panel on radiological emergency preparedness for the State of California. Dr. Bushberg has conducted hundreds of training sessions on radiological emergency medical management at hospitals throughout the United States. Dr. Bushberg also served as a member of the State of California's Nuclear Emergency/Terrorism Task Force that developed the radiological emergency response plan for the Governor's Office of Emergency Services. He is currently a member of the Radiological sub-committee of the State of California Strategic Committee of Terrorism (SSCOT) and Chair of the National Health Physics Society's Medical Sub-committee for Homeland Security.

Dr. Bushberg's doctoral dissertation at Purdue University was on various aspects of the biological effects of microwave radiation. He has served as consultant or appeared as an expert witness on this subject to a wide variety of organizations/institutions including, local, state and federal governments. Dr. Bushberg is a member of the main scientific body of International Committee on Electromagnetic Safety (ICES) which reviews and evaluates the scientific literature on the biological effects of non-ionizing electromagnetic radiation (NIEMR) and establishes exposure standards. He also serves on the ICES Risk Assessment Working Group that is responsible for evaluating and characterizing the risks of NIEMR. Dr. Bushberg was appointed and is serving as a member of the Board of Directors and main scientific council of the National Council on Radiation Protection and Measurement's (NCRP). He also serves as the NCRP Scientific Vice-President for Radiation Protection in Medicine. Dr. Bushberg was appointed to the International Engineering in Medicine and Biology Society Committee on Man and Radiation (COMAR) which has as its primary area of interest the biological effects of NIEMR.