Since 2019
Head of Dept. of Internal Medicine – Gastroenterology, Vivantes Auguste Viktoria Hospital, Berlin, Germany
Since 2015
Eo. Professor (University of Hamburg)
Since 2014
Head of Dept. of Internal Medicine – Gastroenterology and Interdisciplinary Endoscopy, Vivantes Wenckebach Hospital, Berlin, Germany
2009 – 2014
Dept. of Interdisciplinary Endoscopy, University Hospital Hamburg-Eppendorf, Hamburg, Germany
2002 – 2008
Dept. of Gastroenterology and Hepatology Charite, Berlin, Germany
1999 – 2001
UCSF Cancer Center, San Francisco, USA
1997 – 1999
Dept. of Gastroenterology and Hepatology Charite, Berlin, Germany