Success of the accountable care organization (ACO) model may require stronger financial incentives, such as including downside risk in contracts. Using the National Survey of ACOs, we explored ACO structure and contracts in 2012-18. Though the number of ACO contracts and the proportion of ACOs with multiple contracts have grown, the proportion bearing downside risk has increased only modestly.
Keywords: ACO Contracts; Accountable Care Organizations; Downside Risk; National Survey of ACOs; Risk-Sharing; Value Based Healthcare; payment reform.