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. Don is a proven physician leader in change management and implementation of current and future healthcare trends. Dr. Kosiak attended medical school at the University of North Dakota in Grand Forks, ND. He completed his emergency medicine residency at the Mayo Clinic in Rochester, Minnesota. He is board-certified by the American Board of Emergency Medicine and the Certifying Commission in Medical Management.