He is a health economist and health services researcher, conducting research on physician decision-making—both clinical and organizational—Medicaid and underserved populations, and the management of complex, chronically ill patients, particularly patients with end-stage renal disease undergoing dialysis. Prior to receiving his doctorate at the University of Michigan School of Public Health in 2015, Dr. Wilk worked to develop episode-based cost-of-care measures at the Brookings Institution and as a consultant to state Medicaid agencies and private insurers at the Lewin Group.