Dr. Crocker is Medical Chief of Staff for Dell Children's Medical Center of Central Texas. In addition to his pediatric role, he served as Medical Chief for University Medical Center Brackenridge for more than 20 years. He is a current member of the Texas Medical Board, appointed by Gov. Rick Perry.
He is also an assistant clinical professor of emergency medicine for the University of Texas Medical Branch, a member of the Take Heart Austin Steering Committee, a former member of the Seton Family of Hospitals Board of Trustees and is a fellow of the American College of Emergency Physicians. Dr. Crocker is also a member of the Travis County Medical Society and Texas Medical Association, and chair of the Austin/Travis County EMS Quality Assurance Board. He served in the U.S. Army, and received a bachelor's degree and master's degree in nutrition from the University of California at Berkley, and a doctorate of osteopathy from the University of Health Sciences College of Osteopathic Medicine and Surgery.