The Medicare Shared Savings Program (MSSP) was launched in 2012 in order to test the effectiveness of value-based care models in reducing costs and improving outcomes. Currently, 480 ACOs participate in the program, covering more than 7.7 million beneficiaries and saving roughly $1.3 billion between 2012 and 2015. The ACOs with the greatest savings and highest number of covered Medicare members in 2015 can be found in the list below.
Most of the ACOs with the greatest earned savings spent well below their target benchmark or were particularly large. The median savings rate, or the percent difference between actual spending and an ACO’s assigned benchmark, was six percent for all ACOs that shared savings, which is lower than 6 of the top 10 ACOs on the list. Bigger ACOs, such as Advocate Physician Partners Accountable Care, didn’t have as much of a savings rate but made the list because of their large patient volume and associated reductions in spending.