By the numbers. Insurers/managed care.
D005249:Fees and Charges / Q000706:statistics & numerical data; D006264:Health Benefit Plans, Employee / Q000706:statistics & numerical data; D019538:Health Care Surveys; D007348:Insurance, Health / Q000145:classification / Q000706:statistics & numerical data*; D008329:Managed Care Programs / Q000706:statistics & numerical data*; D017057:Medically Uninsured / Q000706:statistics & numerical data; D014481:United States