Regional offices.
D014487:Centers for Medicare and Medicaid Services, U.S. / Q000458:organization & administration*; D003284:Contract Services / Q000592:standards; D005376:Financial Management; D006291:Health Policy; D011785:Quality Assurance, Health Care / Q000191:economics / Q000592:standards; D013221:State Health Plans / Q000592:standards; D014481:United States