Charlie Clark received an undergraduate degree from the University of Maryland, Doctor of Medicine degree from the University of Maryland School of Medicine, and MBA in Medical Services Management from the Carey Business School of Johns Hopkins University. He completed a 3 year Residency in Family Medicine at the Southern Illinois University School of Medicine, in Springfield, Illinois in 1976, and has been Board Certified in Family Medicine and is a Fellow of the American Academy of Family Practice. He practiced family medicine in Frederick, Maryland for 17 years. He has worked for various managed care companies for 20 years doing administrative medicine, until his retirement in 2014. He has extensive experience in utilization review, case management, quality care management, and disease management.