 Dr. Stefan Frank is a surgeon and gynaecologist.He works together with the chief physician Dr. Ulrich Waldner (Hartmut Becker) and the head of the clinic Irene Kaldenbach (Claudia Wenzel) in the Waldner-Klinik.Over all seasons and despite changing relationships he has maintained a close relationship to the practice doctor Dr. Susanne Berger (Daniela Strietzel) who he later has a child with.