More than one-third of U.S. healthcare payments flow through an advanced payment model (APM), such as shared savings, shared risk or capitated payment. Yet for the majority of physician practices, most of their revenue is not tied to risk-based arrangements, leading to significant opportunities to participate in these models. Accountable care organizations (ACOs) can be a good starting point for an APM journey because this type of model starts with upside risk only, which allows practices to test the waters before wading into more complex arrangements that require them to assume greater risk.