title: PSOs enable physicians to go head to head with HMOs.
mesh_terms: D019058:Community Networks / Q000331:legislation & jurisprudence / Q000458:organization & administration*; D004465:Economic Competition / Q000331:legislation & jurisprudence; D006759:Hospital-Physician Joint Ventures / Q000331:legislation & jurisprudence; D007193:Independent Practice Associations / Q000331:legislation & jurisprudence; D008004:Licensure; D006278:Medicare; D017146:Models, Organizational; D009937:Organizational Objectives; D014481:United States