Charles A. Williams, M.D. is a Professor of Pediatrics and Genetics in the Department of Pediatrics, University of Florida. He is a board-certified pediatrician and clinical geneticist and has a special interest in neurogenetic disorders. He is a past recipient of the Harry and Audrey Angelman Award for Meritorious Service. The main focus of his research career has been in the study of Angelman syndrome. Since 1982 he has published many papers on the genetic and medical aspects of Angelman syndrome.