What was the impact of the Next Generation ACO Model on Medicare spending in 2016?

In September 2016, the Center for Medicare and Medicaid Innovation (CMMI) selected NORC at the University of Chicago to conduct an independent evaluation of the Next Generation Accountable Care Organization (NGACO) Model program. On August 27, 2018, CMMI released NORC’s first report on the findings of its evaluation, which included NORC’s estimate of the impact of the NGACO program on Medicare Part A and Part B spending (gross impact) in 2016. NORC defined the net impact of the program by combining this gross impact with the results of the NGACO program’s shared savings and losses. These results were published by CMMI in October 2017 (i.e., shared savings and losses).

In this paper, Milliman consultants combine the aggregate gross impact of each of the NGACOs shown in the NORC report with the shared savings/(loss) results of each NGACO to calculate the net impact of each individual NGACO.

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