Describe how healthcare is purchased and funded through the insurance model.

Healthcare is generally purchased through health insurance.  Health insurance leverage the risk of health care costs across a population and enable payment of a fraction of the cost known as premium on the average cost of healthcare for the population.  Healthcare is funded mainly by the government through Medicaid for low-income earners and disabled; Medicare for the elderly; Tricare for veterans; Children Health Improvement Programs; and other group specific programs; health insurers, private and commercial; and individuals.