Prepared for the ABA by AAI Advisory Board Member Tim Greaney and co-author Douglas Ross, this paper reviews selected developments in antitrust health care. While the paper surveys some of the more important such developments since the last ABA conference in May 2010, the principal focus is on matters that have taken place over the last year. The paper reviews developments in health care antitrust enforcement in Section I, developments in private litigation in Section II and concludes in Section III with a discussion of the agencies’ guidelines, issued last year, on accountable care organizations. Posted with permission.