Prof. Steffens is a specialist in psychiatry and psychotherapy, social medicine with the corresponding further training authorisations in these fields. After working elsewhere in a managerial capacity and as an expert and state policy advisor, he has been Chief Physician at the Hohe Mark Clinic in Oberursel/Taunus and Frankfurt am Main since 2018. He has been researching and teaching in the field of mental health at the Catholic University of Applied Sciences in Mainz since 2017 after a good six years in Nordhausen.