Ann S. O’Malley, M.D., M.P.H., is a senior fellow at Mathematica Policy Research. Dr. O’Malley is an expert in primary care health services research. She conducts both qualitative and quantitative research with a focus on improving support for primary care practices to provide more coordinated and comprehensive care, particularly for patients with multiple chronic conditions. She is the deputy director of the Center on Health Care Effectiveness. Dr. O’Malley holds an M.D. from the University of Rochester School of Medicine and an M.P.H. in health policy and management from the Bloomberg School of Public Health at Johns Hopkins University.