Access to Care is a unique program uniting private and public resources to provide primary care to the uninsured poor. The model was designed to serve a medically indigent population that is dispersed over a large geographic area, where clinics are not a practical option. Care for illness is provided in the offices of private physicians throughout the area and supported by laboratory, radiology, and pharmacy services. The program is designed for the estimated 88,000 persons in suburban Cook County, Illinois, with family incomes of less than twice the federal poverty level, who are uninsured and ineligible for Medicaid and Medicare. Supported by grants from foundations and local governments, the program, which has been in operation for 2 years in two demonstration areas, is administered by a private not-for-profit confederation of four health and social service organizations.