Sumit's research focus is on the equity, quality, and responsiveness of low- and middle-income country health systems. In his inquiries he examines issues and experiences from multiple perspectives (social, systems, operational), always with a view to inform the development of feasible solutions. Sumit has a large and varied portfolio of research on the performance and motivation of health workers in low- and middle-income country health systems. The research includes realist syntheses, systematic reviews, comparative policy analysis, implementation research, and focused ethnographies. Much of this research has been conducted on frontline workers, particularly community health workers and volunteers. Sumit is also a Professorial Fellow at the Gokhale Institute Of Politics & Economics (GIPE), Pune, India.