 In 1996 he was elected Rector of the Medical University of Lodz, position which he held for two terms, until 2002.In 2002 Professor Stepien initiated establishment by the Parliament of the Republic of Poland, of the first Medical University in Poland (merging Medical Academy and Military Medical Academy in Lodz).In the years 2008–2019, he was the head of the Department of Immunoendocrinology and the Department of Endocrinology of the Medical University in Lodz.