I’m Kostadin Kostadinov, a medical doctor, assistant professor, and researcher in the department of social medicine and public health, Plovdiv, Bulgaria. My background is in internal medicine, epidemiology, health policy, and economics. I am interested in data science, policy evaluation, and health services research. This website is a collection of my thoughts, teaching materials, and research projects. The expressed opinions are my own and do not represent the views of any institution.