Research Highlights

Accountable care organizations (ACOs) are groups of clinicians and healthcare organizations that voluntarily collaborate and assume responsibility for the quality and costs of their attributed patients. ACOs were introduced by Medicare after passage of...

For decades, consolidation in frontline care delivery has reshaped healthcare markets across the US. More recently, growing ownership of healthcare delivery organizations by retail companies, insurers, and investor-based firms has accelerated this transformation. In...

Medicare Advantage (MA) requires beneficiaries to select their insurance plans each year during an enrollment period between October and December, with the option to switch again during a second enrollment period from January to March. Over the course of five years, more than half of MA beneficiaries leave their contracts, with...