Of the 220 accountable care organizations in the Medicare Shared Savings Program, 53 ACOs earned bonuses and another 52 reduced Medicare costs but not by enough to share in savings, according to the first-year results released by CMS Tuesday (Sept. 16). Second-year financial performance of ACOs in the separate, much smaller pioneer demonstration was a little better than in the first year. CMS touted the results as showing that Medicare saved $372 million between the shared savings and pioneer...