Mark Drumhiller MD

Mark Drumhiller, M.D., is a board-certified emergency medicine physician and the Chief Medical Officer at Cheyenne Regional Medical Center. He is recognized for physician leadership focused on advancing clinical quality, strengthening collaboration across care teams, and improving patient outcomes. Dr. Drumhiller completed his undergraduate studies at the University of Wyoming and earned his medical degree from Mercer University. He went on to complete an Emergency Medicine residency through Texas A&M–CHRISTUS Health / CHRISTUS Spohn, developing a strong foundation in the evaluation and management of acute illness and injury across diverse patient populations. To further support his work in healthcare leadership and operations, he earned a Physician Executive MBA from the University of Tennessee. In addition to his leadership responsibilities, Dr. Drumhiller has held clinical roles in emergency departments, including service with TeamHealth at Tennova-affiliated facilities. His combined experience in frontline emergency care and executive leadership supports organizational efforts to deliver safe, efficient, and patient-centered care.