Insurer programs fostering provider price competition.
D002140:California; D004465:Economic Competition; D006761:Hospitals; D007341:Insurance / Q000639:trends*; D007343:Insurance Carriers / Q000639:trends*; D007348:Insurance, Health / Q000639:trends*; D008484:Medicaid / Q000458:organization & administration*; D010820:Physicians; D014481:United States