Thoai Ngo was formerly IPA's Senior Director, Research and Knowledge Management and was responsible for directing IPA's corps of research staff, with the continuous aim of producing high-quality research and promoting learning across IPA and its partners. He is an epidemiologist and demographer with expertise in managing, designing, and evaluating health interventions and programs in Asia and Sub-Saharan Africa. Prior to joining IPA, Thoai was the Head of Global Research at Marie Stopes International, a researcher at Johns Hopkins University, and a Research Fellow at the National Institutes of Health. He has advised/collaborated with various organizations including DFID, USAID, WHO, the World Bank, private foundations, universities, and governmental bodies on designing and evaluating health programs. Thoai received his PhD in demography and epidemiology from the London School for Hygiene and Tropical Medicine, and his Masters of Health Science in Global Epidemiology and Disease Control from Johns Hopkins Bloomberg School of Public Health. He has authored more than 40 peer-reviewed journal articles, policy reports, and book chapters.