
Use of voluntary alignment attribution by Next Generation Accountable Care Organization (ACO) participants was limited. The authors highlight the reasons and describe organizational use cases via a mixed-methods approach.

Use of voluntary alignment attribution by Next Generation Accountable Care Organization (ACO) participants was limited. The authors highlight the reasons and describe organizational use cases via a mixed-methods approach.

The authors discuss multiple challenges to the production of policy-relevant results from evaluation of Medicare accountable care organizations (ACOs).