He is a physician specializing in the diagnosis and treatment of diabetes mellitus. As head of the Diabetology Department at Vuk Vrhovac Institute in Zagreb, he supervises the diabetes health care network of Croatia and is especially interested in computer models for cost-benefit of health care strategies. He received his medical and postgraduate degrees from the University of Zagreb and is part of an international group promoting standard registries' for diabetes and other chronic diseases. As a Humphrey fellow, Dr. Metelko is interested in studying health care models and computer systems for organizing and evaluating health care systems.