Heesun Choi, DO, is an emergency medicine physician at the Department of Emergency Medicine Kingman Regional Medical Center where she serves as the Director of Emergency Ultrasound and the Director of EM Ultrasound Clerkship. Dr Choi is also an adjunct clinical assistant professor in the emergency medicine department at Medicine Midwestern University's Arizona College of Osteopathic Medicine (AZCOM), an adjunct faculty instructor of ultrasound education at Touro University Nevada College of Osteopathic Medicine, and an assistant clinical professor in the University of California Irvine (UCI) Medical Center's Department of Emergency Medicine.