Crossroads in quality.

Expanding insurance coverage is a critical step in health reform, but we argue that to be successful, reforms must also address the underlying problems of quality and cost. We identify five fundamental building blocks for a high-performance health system and urge action to create a national center for effectiveness research, develop models of accountable health care entities capable of providing integrated and coordinated care, develop payment models to reward high-value care, develop a national strategy for performance measurement, and pursue a multistakeholder approach to improving population health.