The emerging king of the new health care order is capitation. “Whoever controls the capitated revenue stream will be poised to dominate the emerging health care delivery system— and to reap an enormous windfall that could total hundreds of billions of dollars.” Accordingly, we are witnessing a tremendous struggle over the locus of capitation. Once firmly ensconced in the insurance and HMO industry, capitation is now spreading to organizations controlled by doctors and hospitals.

In a world littered with countless acronyms and organizational types—HMO, IDS, MCO, EPO, PHO, IPA, PSN, OWA—we are most reluctant to introduce yet another. But we must. None of the existing terms describes an important aspect common to all of them that is the subject of this article—providers bearing financial risk for medical expenses. We call these Risk-Bearing Provider Groups (RBPGs). The most prominent example of an RBPG is a physician-hospital organization (PHO), which consists of at least one hospital and one physician practice group that accepts partial or full capitation for at least some of its patients. Accepting capitation risk is not essential to being a PHO, but is a common characteristic. PHOs seek to maintain the financial center of gravity in a provider organization as insurers and employers increasingly come to dominate health care delivery. PHOs can do this by contracting directly with employers on a fully or partially capitated basis, thereby by-passing insurance companies. They can also subcontract with insurance companies or HMOs—so-called “downstream” capitation. Accepting treatment obligations under financial risk helps providers maintain their professional and institutional autonomy and offers the prospect of capturing some of the financial rewards created by the market restructuring that is presently sweeping the country.