has been W3 Professor for Health Services Research at the Faculty of Medicine and Health Sciences at the Carl von Ossietzky University of Oldenburg since December 2014. He heads the outpatient care and pharmacoepidemiology department at the Department of Health Services Research. Previously, he worked for about ten years at the Center for Social Policy (ZeS, now SOCIUM) and the Department of Health Economics, Health Policy and Health Services Research at the University of Bremen. In 2011 he completed his habilitation in the subject “Epidemiology and Public Health” on the subject of “Healthcare research with routine data from health insurance companies: possibilities and limits”. The trained nurse had previously studied nursing science and public health/health sciences in Bremen and received his doctorate there in 2008.