In the United States in 2011, insurance paid for 73% of health care consumption costs: the sum of 35% (private insurance), 22% (Medicare), and 16% (Medicaid). The percentage paid for by private insurance, 35%, was a uniquely high number among advanced countries. Even so, substantially more U.S. health care was paid for by Medicare, Medicaid, and other government programs than by other means.
Source: Department of Health and Human Services Centers for Medicare and Medicaid Services.