MD with residency, fellowship and sub-specialty training, and additional studies in business and computer science. Formerly: Deputy Director, Special Initiatives, Bill & Melinda Gates Foundation; with World Health Organization; practitioner in the developing world; positions in health/science philanthropy. Currently: Director, President's Delivery Unit, World Bank Group; Senior Adviser to Dr. Jim Yong Kim. Author of numerous publications spanning macroeconomics, health and poverty alleviation. Young Global Leader, World Economic Forum (2011).