Trends in Medicare health maintenance organization enrollment: 1986-93.
This study examines Medicare health maintenance organization (HMO) enrollment under the Tax Equity and Fiscal Responsibility Act (TEFRA) of 1982 (Public Law 97-248) from 1986 to 1993. It shows that there was moderate growth in the number of Medicare beneficiaries participating in the TEFRA risk program, reaching 1 in 20 beneficiaries in 1993. Medicare HMO enrollment is heavily concentrated in a few large plans, resulting in heavy concentrations geographically. California and Florida accounted for over one-third of Medicare HMO enrollees. One-half of the States have no Medicare HMO enrollment and one-fifth of the States have fewer than 15,000 Medicare HMO enrollees.
McMillan
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Office of Research and Demonstrations, Health Care Financing Administration, Baltimore, MD 21207.
D002204:Capitation Fee; D014487:Centers for Medicare and Medicaid Services, U.S.; D003625:Data Collection; D006279:Health Maintenance Organizations / Q000145:classification / Q000706:statistics & numerical data* / Q000639:trends; D006302:Health Services Research; D008137:Longitudinal Studies; D006278:Medicare / Q000458:organization & administration* / Q000706:statistics & numerical data; D010067:Ownership; D012306:Risk; D014481:United States