Doctor of Medicine, University Freiburg, Germany, 1980. Doctor Medical, University Göttingen, Germany, 1983. Privatdozent, University Göttingen, Germany, 1992.
Assistant in biochemistry University Göttingen, 1980-1981, assistant in internal medicine, 1981-1993. Oberarzt internal medicine Ruhr University, Bochum, Germany, 1993-2000. Head Diabeteszentrum, Bad Lauterberg, Germany, since 2000.
Member German Diabetes Association (Ferdinand-Bertram award 1993, Women Gertzfield award 2007), European Association for Study of Diabetes, American Diabetes Association, German Gastroenterology Society, German Endocrinology Society, German Society Internal Medicine.
Married Corinna Niederkleine, December 8, 1986. 1 child, Anna Lena.