Katelyn J. Yoo is a Health Economist with the Health, Nutrition, and Population Global Practice at the World Bank. Her expertise encompasses economics/ econometrics, impact evaluations, and financing, particularly in the domains of public health, sustainability, and poverty alleviation. She specialized in impactful analytical projects, including Public Expenditure Reviews (PER), impact evaluations (IE), and Health System Financing Assessment (HFSA), aimed at fostering evidence-based policies and interventions. Prior to her experience at the World Bank, she has contributed her skills and knowledge to organizations including UNICEF, UNOCHA, and various NGOs based in Kenya. She is interested in applying economic thinking and tools to the health challenges faced by low-and-middle-income countries (LMICs), and thus to translate evidence-based research into policy actions and inform governments on the best course of action. Katelyn was born in South Korea and her international framing during her childhood including Indonesia, Canada, Kenya, and the US sparks an interest in international development. Her academic journey includes a doctorate in Health Economics from the John Hopkins Bloomberg School of Public Health, a master’s degree in health economics and policy from Columbia University, and a bachelor’s degree in business and economics from the University of Toronto.