This week, the CMS Innovation Center released the final evaluation results of the Accountable Care Organization (ACO) Investment Model (AIM), which operated under the Shared Savings Program (SSP) from 2015 to 2018. AIM provided up-front payments to select ACOs to invest in infrastructure and staffing and targeted small ACOs, many of which were in rural areas. Overall, participating ACOs reduced total Medicare spending and utilization without decreasing quality of care. Read more here.