Market forces in health care are paradoxically pulling physicians and hospitals apart and together at the same time. What are these forces and trends? Is the long-standing marriage of interdependence and productivity between them destined to fail, or can it be saved and even strengthened by emerging delivery and governance models in the so-called "market revolution" of consumer-driven health care? What are the implications for health care policy and practice? These are issues we explore in this Arizona Health Futures Policy Primer.