The Centers for Medicare and Medicaid Services (CMS) announced last week that it selected 27 accountable care organizations (ACOs) to participate in its Shared Savings Program, which rewards organizations for meeting quality benchmarks and reducing costs.  The announcement followed the earlier selection of 32 Pioneer Model ACOs and six Physician Group Practice Transition Demonstration organizations.  Altogether, CMS says more than 1.1 million patients receive care from providers participating in Medicare shared savings initiatives. Yet the nation’s biggest commercial ACO isn’t on the CMS list. AdvocateCare, an ACO with 350,000 covered lives and 3,900 participating physicians, is the largest of a growing number of private ACOs across the US.  Launched in late 2010, the ACO is a joint venture between Advocate Health Care, a $4.5 billion IDN based in Chicago, and BCBS of Illinois. Building on Advocate’s 8-year-old clinical integration program, the […]