Dr. David J. Dix is a Research Biologist, and Acting Deputy Director of the U.S. Environmental Protection Agency's National Center for Computational Toxicology, at Research Triangle Park, NC, USA.

Dr. Dix and colleagues are developing EPA's ToxCast™ research program utilizing high throughput screening technologies to derive bioactivity profiles that can be used to predict toxicity, characterize toxicity pathways, and prioritize environmental chemicals for further testing. Dr. Dix is an adjunct Associate Professor in the Department of Environmental Sciences and Engineering at the University of North Carolina at Chapel Hill. He earned his undergraduate degree in Biological Sciences from the University of Illinois at Chicago, a Ph.D. in Physiology from Rush University in Chicago, and completed postdoctoral training at the U.S. National Institute of Environmental Health Sciences. He has published over 90 articles, reviews and book chapters, serves on several Editorial Boards, and has given numerous national and international presentations on his research.