From the original article introduction: Healthcare is in the midst of a profound business model change. And we are all aware that the old model of “fee-for-service” medicine is over, and a new model is quickly emerging. On December 12, 2013, the Dartmouth Institute for Health Policy and Clinical Practice published the first real evidence that the management of the patient across the continuum of care can bend the cost curve of our ever- aging population. The new shared savings model that has developed is designed to deliver seamless, high-quality care for patients, replacing the fragmented care that we see in the fee-for-service payment system. In the fee-for-service model, different providers receive different, disconnected payments. But the new model is designed to maintain a patient-centered focus by developing processes to promote evidence-based medicine, patient engagement, and report on quality. To deliver on that promise, health systems need greatly enhanced data aggregation tools; however, it is difficult to evaluate these tools, and many do not understand how the system needs translate into data requirements. This article is designed to present some of those issues in context.