Mollie Williams, Dr.P.H., M.P.H., is executive director of The Family Van and Mobile Health Map and Lecturer of Global Health and Social Medicine at Harvard Medical School. Dr. Williams uses her extensive experience in public health leadership, community engagement, organizational development, and fundraising to increase access to care in Boston through her work with The Family Van and to strengthen the mobile health care sector across the United States through Mobile Health Map. She is a prolific writer and recently co-authored the fifth edition of Health Program Planning and Evaluation. Dr. Williams holds an M.P.H. from the University of Michigan at Ann Arbor and a Dr.P.H. in Health Policy and Management from the University of North Carolina at Chapel Hill.