Nils Greve is a psychologist, psychiatrist and systemic psychotherapist. He works as CEO of GpG NRW, a non-profit association offering assertive outreach treatment in large parts of the German state of North-Rhine-Westphalia. Moreover, he is Chairman of Dachverband Gemeindepsychiatrie, the German association of regional mental health centers. He has been Head of the Clinical Department and CEO of the mental health center of Solingen for many years. His main area of interest is the implementation of regional mobile treatment teams for persons with severe mental illnesses in regional mental health institutions, bringing together clinical treatment and psychotherapy with rehabilitative and supportive social work.