Compiled by the U.S. Bureau of the Census. Site links to Current Population Survey reports and tables, including health insurance coverage, children's health insurance, low-income uninsured children by state, and detailed historical tables (1987- ).

Contains plan-specific information on clinical performance, accreditation and member satisfaction from 273 organizations, collectively covering some 63.3 million lives, that voluntarily submitted their performance results to the National Committee for Quality Assurance (NCQA) . Includes national, regional and state averages, as well as benchmarks, on specific measures of care and service.

Includes national health care indicators and expenditures (aggregate national health care spending); Medicare enrollment (aged, disabled, all), utilization, and expenditure; DRG data for short-stay hospitals; Medicare Chartbook; Data Compendium (Annual compilation of national health care data); Medicaid data.

"The Mapping Medicare Disparities (MMD) Tool contains health outcome measures for disease prevalence, costs, and hospitalization for 18 specific chronic conditions, emergency department utilization, readmissions rates, mortality and preventable hospitalizations.

Produced by the Kaiser Family Foundation.

The private research firm Merritt Hawkins & Associates conducted a large survey of major metropolitan areas and wait times for different specialties and their Medicaid/Medicare acceptance rates.

Provides ongoing statistical data and research analyses of the old-age, survivors, and disability insurance (OASDI) and Supplemental Security Income (SSI) programs.

Produced by the Kaiser Family Foundation. Includes data on topics related to the uninsured.