David H. Ledbetter, Ph.D., FACMG executive vice president and chief scientific officer at Geisinger Health System. Previously he held academic and leadership positions at Emory University, the University of Chicago, and the National Center for Human Genome Research at NIH. He is a graduate of Tulane University and earned his Ph.D. at the University of Texas-Austin. He is an internationally recognized expert in Precision Medicine, having focused his early research efforts on discovering the genetic causes of childhood neurodevelopmental disorders such as autism, and the translation of new genomics technologies into clinically useful genetic tests for early diagnosis and intervention. His current research interest includes leveraging longitudinal electronic health information with large-scale DNA sequencing to determine the clinical utility and cost-effectiveness of precision medicine approaches in a real-world health system setting.