The evidence is undeniable. By any measure, the US spends more on healthcare than any other country in the world, yet its health outcomes as measure by longevity are in the bottom half among developed countries, and its health-related quality of life has remained constant or declined since 1998. In addition to high costs and lower than expected outcomes, the healthcare delivery system is plagues by treatment delays as it can take weeks to see a specialist, and many people have limited or no access to care.

Part of the challenge is that the healthcare delivery system is a large,...