Dr. Chang earned his Doctor of Philosophy at the Johns Hopkins Bloomberg School of Public Health in 2004, after completing both his Master’s of Business Administration and Master’s of Public Health at Johns Hopkins University. Prior to Hopkins, Dr. Chang graduated Phi Beta Kappa from Cornell University with a double major in neurobiology and social psychology. Dr. Chang started his professional career with a primary appointment in the Department of Surgery at Johns Hopkins School of Medicine, with a joint appointment in the Department of Health Policy and Management and the Johns Hopkins Bloomberg School of Public Health; and then continued on to the University of California San Diego, where he was the director of outcomes research for the Department of Surgery.