Niall was appointed President and CEO of HCCI in June 2017. In this role, he is responsible for all aspects of the HCCI mission, promoting HCCI’s research agenda, examining cost trends in U.S. healthcare, ensuring maximal use of the HCCI data resources to enable world class research and analysis by external users, leading HCCI’s Medicare Qualified Entity business, and working with state and national policy makers to improve the health care system. He is a nationally recognized expert in health care policy, the use of health care data to enable and accelerate health system change, and data transparency. He has published widely in leading academic journals, including the Journal of the American Medical Association, the New England Journal of Medicine and Health Affairs. Prior to joining HCCI, Mr. Brennan was Chief Data Officer at the Centers for Medicare and Medicaid Services (CMS). He has also worked at the Brookings Institution, the Medicare Payment Advisory Commission, the Congressional Budget Office, the Urban Institute, and PriceWaterhouseCoopers. Mr. Brennan received his MPP from Georgetown University and his BA from University College Dublin, Ireland.