Accretive Health, Inc. announced that its Board of Directors has appointed Joseph Flanagan, currently President and Chief Operating Officer of Accretive Health, as President, Chief Executive Officer and member of the Board, effective immediately. Dr. Emad Rizk and the Board of Directors have mutually agreed for Dr. Rizk to step down from his positions as CEO and member of the Board. Dr. Rizk will be available over the next several weeks to help ensure a smooth transition.