Dr. Schwetz is the Senior Advisor for Science at the Food and Drug Administration and is a Distinguished Scientist at the University of Maryland, College Park, Maryland. He was the Acting Principal Deputy Commissioner of the FDA from January 20, 2001, to February 22, 2002. From September 1999 until January 2001, he served as the Acting Deputy Commissioner of the agency. He has served as Senior Advisor for Science since September 1999. He was Director of FDA's National Center for Toxicological Research in Jefferson, AR, from 1993 to 1999. A Diplomate of the American Board of Toxicology and Honorary Diplomate of the American Veterinary Epidemiology Society, Dr. Schwetz was acting Director of the Environmental Toxicology Program at the National Institutes of Health's National Institute of Environmental Health Sciences (NIEHS) in Research Triangle Park, NC, before coming to the FDA in 1993. He was also the Associate Director of the National Toxicology Program there. Dr. Schwetz is an elected member of the National Academy of Sciences Institute of Medicine and is a member of the Society of Toxicology (SOT) and the National Capital Area Chapter of the SOT, the American Veterinary Medical Association, the Teratology Society, the Behavioral Teratology Society, and the Society of Toxicologic Pathology (honorary). In addition to numerous other awards during his career, Dr. Schwetz received the U.S. Government's 1998 Meritorious Executive Presidential Rank Award. He received the Distinguished Service Award of the American College of Toxicology in 2000 and the Merit Award of the Society of Toxicology in 2002.