"The Health Insurance Plan of Greater New York was established in March, 1947 for the specific purpose of accumulating the required experience under carefully controlled conditions. In order to assemble measurable data, medical services are provided solely by groups of physicians and specialists workiing together as complete units or teams paid on a per capita basis.The 700 physicians who now serve the approximately 200,000 persons now insured with the HIP are organized into major boroughs of the city. Two groups were established by teaching institutions: New York University College of Medicine and Montefiore Hospital, a teaching unit of the College of Physicians and Surgeons of Columbia University. All other groups are partnerships, of whiich the Central Medical Group of Brooklyn is an example. This group, with the largest enrollment in HIP, is now providing complete medical care, preventive as well as curative, for more than 20,000 persons.

"This volume is a report by the Central Medical Group of Brooklyn of its experiences during the first two years. It reflects the continued enthusiasm of its physician members for group practice of medicine under a prepayment plan. Its experience reveals the number of physicians' services required annually by the population which it serves, the volume of specialist and laboratory services, the administrative cost involved in operating the medical center, and the net income remaining from the per capita payments by HIP for the remuneration of the physicians...." (pp. xxi-xxii)