Mr. Lieber has been the president of Overlook Medical Center (OMC) since 2003. At OMC, he is the executive leader for an emerging Integrated Delivery System providing care to 600,000 people in Union, Essex and Somerset Counties in New Jersey. Overlook has been recognized as a Top 100 Hospital in the United States by Healthgrades, Beckers and Project Green Health. AHS has been included in the Fortune 100 Best Places to Work For, ten years running. AHS and Overlook are the sole Healthcare System partner of the Optimus ACO which is one of a handful of ACOs that have earned Medicare shared savings every year since its inception in 2012. Mr. Lieber serves on several Boards the Atlantic, Optimus (Vice Chair) and Health Quality Partners ACO boards, Summit Atlantic Surgical Center (largest Ambulatory Surgery Center JV in NJ), AHA Regional Planning Board, Cornell Sloan Program Alumni Association and BD Advisory Board.