Chief Medical Officer
Dr. Donald Kosiak serves as the Chief Medical Officer for Leidos. He is responsible for providing clinical subject matter expertise and perspective, knowledge, experience, leadership, and direction to ensure collaboration and alignment to business strategy across the entire Leidos organization. Previously he has served as the Vice President for Medical Development and Executive Medical Director for Avera Health, a 32-hospital integrated medical system based in Sioux Falls, South Dakota, USA. In that role, he served as the chief medical officer of one of the top telemedicine programs in the United States. In addition, he has served as the elected Chief of Staff of the Avera McKennan Hospital, a 545-bed tertiary medical center located in Sioux Falls, South Dakota. Dr. Kosiak continues to serve in the United States Army National Guard as an emergency physician. He is a decorated officer having served three tours of duty in support of Operation Iraqi and Enduring Freedom. Dr. Kosiak attended medical school at the University of North Dakota. He completed his emergency medicine residency at the Mayo Clinic in Rochester, Minnesota. In 2010, he completed his Master of Business Administration from the University of Mary in Bismarck, North Dakota. He is board-certified by the American Board of Emergency Medicine and the Certifying Commission in Medical Management.