How should managed care physicians be paid?

When paying a physician for medical or surgical services, most patients expect the traditional bill or charge for that encounter or visit. While most people also pay health insurance premiums, few patients expect to prepay for their health care. But that is the foundation of most managed health care systems-prepaid medicine. PPOs, IPAs, and HMOs are typically health care providers linked together to provide services to a set population for a specific prepaid fee or "capitation" payment. Other providers contract with these managed care insurers to receive a predetermined and often "discounted" professional fee for services. These managed care organizations have already gone through a number of stages in determining how physicians are to be compensated for their services, and further changes loom on the horizon.