His research focuses on inequities in health and health care from a population health perspective. His work seeks to improve the health of vulnerable populations including racial and ethnic minorities, people with low socioeconomic status, people with serious mental illnesses, and those involved in the criminal justice system. His current work includes an investigation into the timing and causes of mortality among former prisoners in Connecticut, a mHealth intervention designed to improve treatment adherence and therapeutic alliance for adults in treatment for depression, and an evaluation of a group psychotherapy program for inmates with psychiatric and behavioral disorders.