Todd P. Lewis is an Assistant Professor in the Division of General Medicine and Geriatrics at WashU Medicine. He is a lead researcher with the QuEST Network, a global research consortium building the evidence base for improving health system performance. Dr. Lewis’s research uses mixed methods approaches, borrowing from econometrics, implementation science, and other disciplines to understand how well health systems are working for people. Dr. Lewis leads the People’s Voice Survey, a multi-country survey that assesses health system performance from the perspective of populations, which has been implemented in over 20 countries. Prior to joining Washington University, Dr. Lewis was a Research Associate at the Harvard T.H. Chan School of Public Health where he completed his doctoral studies in Population Health Sciences with a specialization in Health Systems.