There is some controversy which centers around the question of whether a particular government policy or program may be Judged successful. This dissertation takes the position, with due respect to the difficulties of such a task, that policy success can be evaluated and that it is important that such evaluations be made. Traditionally, health care in the United States has been delivered by the solo medical practitioner on a fee-for-service basis. A relatively new concept in the health care delivery system combines group practice with prepayment for services. These types of practices were designated as Health Maintenance Organizations in 1970 by the Nixon Administration.The major question of this dissertation is whether or not the HMO policy of the federal government has been a success. Along with this question the primary focus of this dissertation is upon the development and evolution of the federal HMO program.