Jeffrey R. Leonard, MD, is the Chief of Neurosurgery at Nationwide Children’s Hospital and a Professor of Neurosurgery at The Ohio State University College of Medicine. Prior to joining Nationwide Children’s, Dr. Leonard was a neurosurgeon at St. Louis Children’s Hospital and an associate professor of Neurosurgery and Pediatrics in the Department of Neurological Surgery at Washington University School of Medicine in St. Louis, Missouri. He completed his residency and fellowship programs in Neurological Surgery at St. Louis Children’s Hospital and Washington University School of Medicine. Dr. Leonard graduated from medical school at the University of Washington School of Medicine in Seattle, Washington. Dr. Leonard has authored more than 75 publications, presented invited talks nationally and internationally, held leadership positions in several major neurosurgical organizations, and been the recipient of several teaching awards. He earned international attention for his dedication to improving treatment for childhood brain tumors and has received grant funding for this work in studying their genetic profiles. He has also performed innovative investigations in the field of pediatric head trauma.