About 43% of the total $315 million in shared savings Medicare paid to Accountable Care Organizations (ACOs) in the Medicare Shared Savings Program (MSSP) based on their first year performance went to 10 ACOs. The payments to these top 10 earning ACOs totaled $135.2 million; the payments to these ACOs ranged from $28.3 million to $9.4 million. On November 7, 2014, the Centers for Medicare & Medicaid Services (CMS) posted the Performance Year One final financial reconciliation and quality performance results for all ACOs with 2012 and 2013 agreement start dates. Based on the posted data, the . . .