Accountable Care Program Implementation and Effects on Participating Health Care Systems in Washington State: A Conceptual Model.

This study is based on key informant interviews with health care executives representing 5 large health systems that had entered into contracts with the Washington State Health Care Authority to provide accountable care network services under the State Innovation Model initiative. The purpose of this study was to explain effects of accountable care program (ACP) implementation on participating health care systems. Between January 2017 and May 2018, we conducted 2 rounds of semistructured interviews (n = 20). Results indicate the need to present a modified conceptual model aligned with ACP implementation in the current context.