The research of Prof. Dr. Steffen Flessa focuses on the efficiency of healthcare systems and institutions in order to improve the accessibility, affordability, quality and coverage of healthcare services in particular for vulnerable and poor population groups. He has extensively published on hospital management (e.g. costing, processes, quality, personnel), modelling (e.g. Markov, System Dynamics, Simulations), healthcare financing (e.g. insurance systems, health equity funds) and interventions programs (e.g. telemedine, vaccinations, screening) both in Germany and in low- and middle-income countries. His methods are based on primary data collection (incl. time studies), mathematical m