Despite the fact that prevention is a keyword in the definition of healthcare, the modern healthcare system mostly focuses on diagnosis and treatment. Our system has some great strengths: devoted providers, innovative researchers, powerful industry development capabilities, to name just a few. However, fragmentation, diffusion of responsibility, misaligned payment incentives, and haphazard organization all contribute to ballooning costs, patient alienation, and, sometimes, serious breakdowns in care. So, what are ACOs, and how do they work? Two of the many questions which will be answered in this blog!