Health care delivery is going through revolutionary changes. There is a shift toward providing care under the auspices of managed care organizations (MCOs). These MCOs are becoming larger and more comprehensive while increasingly focused on preventive and public health issues. Quality of care, health economics, health services research, data and information systems, quantitative analysis, and the social and behavioral sciences are all becoming important areas of expertise for MCOs and are vital to their successful operation. Thus schools of public health can contribute considerably to MCOs by making their curricula relevant to a managed care environment and having faculty members and research programs that recognize the public health overlap with managed care.