Professor of business administration at the Leibniz University of Hanover. Graduated in economics in 1977. 1980 Dr.r. pole. 1987 habilitation at the Ludwig Maximilians University in Munich. Since 1988 Director of the Institute for Insurance Management at Leibniz University Hannover. Spokesperson for the Research Center for Health Economics and Health Systems Research. Chief Editor of the European Journal of Health Economics. Member of the European Academy of Sciences and the Academy of Science and Literature, Mainz. Chairman of the board of the German Society for Health Economics.