Dr. Kristin Johnson is the Global Director of Monitoring, Evaluation, Research, and Learning at Last Mile Health. Drawing on mixed methods and implementation science, she leads the development of frameworks, research plans, and learning agendas to help strengthen health systems and improve health outcomes. Kristin brings expertise in participatory and adaptive approaches to evaluation, quality improvement, and data-use to support evidence-based decision making. Prior to joining Last Mile Health, Kristin was a senior consultant at John Snow Inc., where she directed the evaluation of federal health promotion and workforce capacity development programs. She holds a Doctorate and Masters of Public Health from Boston University, where her studies focused on global health and epidemiology. Guided by the social-ecological framework, her dissertation research applied mixed methods to determine factors influencing contraceptive use among adolescent girls in Bangladesh, including the provision of services by community health workers.