In 2006, the Institute of Medicine (IOM) released a series of three books on the Future of Emergency Care in the United States Health System. These reports contained recommendations that called on the federal government and private stakeholders to initiate changes aimed at improving the emergency care system. Three years later, in May 2009, the IOM convened a workshop to examine the progress to date in achieving these objectives, and to help assess priorities for future action. The May 2009 workshop, summarized in this volume, brought stakeholders and policy makers together to discuss which among the many challenges facing emergency care are most amenable to coordinated federal action. The workshop sought to foster information exchange among federal officials involved in advancing emergency care and key stakeholder groups from around the country.