Parker grew up in Pennsylvania and New Jersey. He graduated from the University of Virginia and served as a pilot and accounting officer in the U.S. Air Force in Germany before completing law school at New York University and Hastings College of the Law.
Parker was in private practice in northern California for nearly 30 years, focusing on civil, family, and criminal law. He defended more than 15 defendants accused of murder, including four charged with capital murder. Also during that time, Parker served as a juvenile court referee and a referee and principal referee of the California State Bar Court. Thereafter, and for over ten years, he worked as a prosecutor in the San Mateo County District Attorney’s Office, mostly working in civil and criminal enforcement of environmental and labor laws. He also assisted in the prosecution of numerous homicides.
Now retired from the active practice of law, Parker lives happily with his wife in Whitefish, Montana. For the last ten years, he has been on the Montana Innocence Project board of directors, helping with project administration and case litigation.