Dr. Alexander is a Professor of Epidemiology and Medicine at the Johns Hopkins Bloomberg School of Public Health, where he serves as founding co-Director of the Center for Drug Safety and Effectiveness and Principal Investigator of the Johns Hopkins-FDA Center of Excellence in Regulatory Science and Innovation (JH-CERSI). He is a practicing general internist and pharmacoepidemiologist and is internationally recognized for his research examining prescription drug utilization, safety and effectiveness. The author of over 375 scientific articles and book chapters, many of which have focused on the epidemiology of the opioid epidemic, he has published regularly in leading scientific journals and testified in front of expert bodies including the U.S. House of Representatives and U.S. Senate. Dr. Alexander also serves on several editorial and advisory boards and is a frequent speaker on pharmaceutical utilization and policy. He received his B.A. cum laude from the University of Pennsylvania, an MD from Case Western Reserve University, and a Master of Science from the University of Chicago.