A new health professional, the primarycare medical practitioner, could deliver increased and improved health care. The primary-care medical practitioner could be prepared to practice in a period of five years after graduation from high school. He would limit his practice to a clearly defined area of medicine and would provide comprehensive, relatively autonomous, primary patient care and services principally in ambulatory settings. Primary-care medical practitioners for children and similarly trained health professionals in other areas of medicine could play an important part in meeting present and future needs for highly qualified health personnel. They would serve as key figures in the health care system.