In 1478 Drohobych received his doctorate in philosophy, but he continued his studies. This time he took up medicine. At that time natural philosophy disciplines were closely connected. Almost all contemporary philosophers demonstrated equally strong prowess in astronomy and medicine, which allowed university professors to transfer from one department to another. Similar methods were used in teaching both disciplines. It was done through reading and interpretation of Latin translations of Greek and Arab classical authors. Medicine was considered the key to understanding nature. Shortly after Drohobych completed his medical studies, he was offered a position to teach astronomy at Bologna University.