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In their article, Nyweide and colleagues1 present results from the first 2 years of the Pioneer accountable care organization (ACO) program. Like the Medicare Shared Savings ACO Program (MSSP), the Pioneer program rewards health care organizations that accept accountability for a population of beneficiaries and score well on measures of cost, quality, and patient experience.2 The Pioneer program gives ACOs the opportunity to gain a greater share of any cost savings they produce but also gives them more risk if costs for their population exceed targets. ACOs are one of the centerpieces of the Affordable Care Act, and understanding how they have performed is critical in the United States.
Casalino LP. Pioneer Accountable Care OrganizationsTraversing Rough Country. JAMA. 2015;313(21):2126–2127. doi:10.1001/jama.2015.5086