Dr Kastelic is head of the National Center for the Treatment of Drug Addiction in Ljubljana (Slovenia) and head of co-ordination of the Centers for the Prevention and Treatment of Drug Addiction at the Ministry of Health of the Republic of Slovenia.
He earned his medical degree from the University of Ljubljana in 1981, with a specialization in psychiatry in 1989. Postgraduate training included psychopathology, child psychiatry, and group psychotherapy. Dr. Kastelic serves as guest editor of European Addiction Research on Buprenorphine: Current Perspectives, as well as editor-in-chief of the scientific journal SEEA Addictions, a Slovenian magazine titled Reflection, and a series of books titled Drugs Amongst Us. The author of more than 300 books and articles on drug addiction as well as several manuals and leaflets for drug users and on prevention of drug use, Dr. Kastelic has participated in more than 200 international conferences and has offered about 900 lectures on the same subject. He serves as secretary general of the European Opiate Addiction Treatment Association, is a founding member of the World Federation for the Treatment of Opiate Dependence, is president of the SEEA Society, and president of the SEE Adriatic Addiction Treatment Network.