A talk by Michael E. Chernew, PhD, professor of health care policy, Harvard Medical School. Moderated by Freda C. Lewis-Hall, MD, DFAPA, executive vice president and chief medical officer, Pfizer, and member of the HMS Board of Fellows. Harvard Medical School MED-EDs are a series of short, thought-provoking presentations by renowned HMS faculty, alumni, and leadership volunteers built to share and inspire new ideas.