Table 4. Number of Medicare Tax Equity and Fiscal Responsibility Act (TEFRA) of 1982 risk health maintenance organization (HMO) enrollees and percent distribution, in the 20 HMO's that had the most Medicare enrollees: December 1986.

Name of HMO		HMO Medicare enrollees
		Number	Percent
Total, TEFRA risk		813,712	100.0
Top 20 TEFRA risk		517,268	63.6
1.	International Medical Centers—Florida	129,499	15.9
2.	Family Health Plan, Inc.—California	48,420	6.0
3.	PacifiCare Inc., California	45,779	5.6
4.	Physicians Health Plan of Minnesota	45,384	5.6
5.	SHARE Health Plan Minnesota	42,082	5.2
6.	Comprehensive American Care-Florida	18,218	2.2
7.	SHARE Illinois	17,502	2.2
8.	HMO—Pennsylvania	16,735	2.1
9.	Kaiser—Northwest Oregon	15,747	1.9
10.	Medcenters Health Plan—Minnesota	15,672	1.9
11.	United Health Plan (Watts—California)	15,003	1.8
12.	Blue Care—Michigan	14,943	1.8
13.	Hawaii Medical Service Association-Hawaii	14,897	1.8
14.	Fallon Community Health Plan—Massachusetts	12,559	1.5
15.	Bay Pacific—California	11,880	1.5
16.	Inland Health Plan—California	11,487	1.4
17.	Family Health Plan—Arizona	11,420	1.4
18.	HMO—New Jersey	11,085	1.4
19.	Health Plan of Nevada	10,549	1.3
20.	Group Health Inc.—Minnesota	8,407	1.0

SOURCE: Health Care Financing Administration: Data from the Office of Prepaid Health Care.