Dr. Freeman, a forensic trauma epidemiologist, serves as a clinical associate professor of epidemiology at Oregon Health and Science University School of Medicine, Department of Public Health and Preventive Medicine, where he teaches a course in injury and trauma epidemiology. In addition, he is an adjunct associate professor of forensic medicine at the Institute of Forensic Medicine, Faculty of Health Sciences, Aarhus University, Denmark.

Freeman holds a doctorate in trauma epidemiology, along with a Master of Public Health in biostatistics and epidemiology from Oregon State University. Originally trained in chiropractic, he provides forensic consultation in cases of alleged professional negligence. He is also trained in crash reconstruction and occupant dynamics, as well as medicolegal death investigation. Freeman is a fully accredited crash reconstructionist with the Accreditation Commission for Traffic Accident Reconstruction, and serves as a consultant trauma epidemiologist to the Medical Examiner Division, Oregon State Police, analyzing fatal collisions and the resulting injuries.

Freeman has written and presented widely on motor vehicle crash injuries and forensic issues, as well as other traumatic injuries. He is the co-editor-in-chief of the Journal of Whiplash and Related Disorders from Haworth Medical Press, the only peer-reviewed journal devoted to whiplash injuries, and he is also the co-chair of the International Whiplash Trauma Congress.

Freeman has provided forensic testimony or evaluation hundreds of times throughout the United States in state and federal courts, as well as in Canada, Australia, and Scandinavia.