Dr. Hagan has become a trusted member of the cardiology team. His career highlights include: chief of cardiology and director of clinical research at the Naval Regional Medical Center, chief of cardiology and professor of medicine at the University of Utah School of Medicine, partner and president of the Tulsa Heart Center, director of echocardiography at Hillcrest Medical Center, clinical professor of medicine at the University of Oklahoma at Tulsa, and a program director for the American College of Cardiology Continuing Medical Education Programs.