Firms compete with M.D.s, hospitals.
D000554:Ambulatory Care Facilities / Q000639:trends; D006268:Health Facilities / Q000639:trends*; D006269:Health Facilities, Proprietary / Q000639:trends*; D011320:Primary Health Care / Q000458:organization & administration*; D013531:Surgicenters / Q000639:trends; D014481:United States