Corinne Lewis is the senior research associate in The Commonwealth Fund’s Delivery System Reform Program, where she leads internal research on high-need, high-cost and vulnerable populations. Before joining the Fund, she was a health research analyst with Mathematica Policy Research, Inc., where she gained extensive experience in mixed methods research on federal demonstrations of innovative models of care. Before joining Mathematica, she was a project coordinator at the Laboratory for Youth Mental Health at Harvard University and had internships with the Centers for Medicare and Medicaid Services and NYU Augustana Center at NYU Lutheran Medical Center. Ms. Lewis holds a B.A. in psychology from Boston University and a master of science in social policy from Columbia University’s School of Social Work.