HMO	Local Headquarters	Parent, Owner or Manager	Year Certified as HMO	June 2006 Illinois Enrollment Change 2005/2004	2006 Net Income (Margin)	Notes and History
Aetna Health of Illinois	Chicago	Aetna Health, Blue Bell, PA	1982	60,115 13.4%	$11,289,176 6.1%	Acquired NYLCare and Prudential Health Plan operations in 1997 and 1999, not including the former Rush-Prudential HMO
AmeriGroup Illinois	Chicago	AMERIGROUP Corporation, Virginia Beach, VA	1996	37,610 9.7%	-$6,177,154 -11.5%
Aveta Health Illinois, Inc.	Hillside	North American Medical Management	2005	47	141,196	Medicare Advantage Special Needs plan offered under name Aveta CarePartners
CIGNA Healthcare of Illinois	Chicago	CIGNA Health Plans, Philadelphia, PA	1986	4,626 -7.3%	$343,914 2.4%
CIGNA Healthcare of St. Louis	St. Louis, MO	CIGNA Health Plans, Philadelphia, PA	1986	590 -56.3%	$1,535,999 9.5%
Essence, Inc.	St. Louis, MO	Physician owned	2005	302		New Medicare Advantage plan in St. Louis area
Great-West Health Care of Illinois	Rosemont	Great-West Life Insurance, Englewood, CO	1996	5,403 -29.9%	$113,834 1.9%	Formerly known as One Health Plan
Group Health Plan	Earth City, MO	Coventry Health Care, Inc., Bethesda, MD	26,254	27,781 17.2%	$40,283,277 7.7%	Acquired commercial business of HealthPartners of the Midwest
Harmony Health Plan of Illinois	Chicago		1996	78,110 37.0%	-$10,636,423 -4.5%	Acquired Family First (University of Chicago) Medicaid plan in 1998 and Neighborly Care in 2000
Health Alliance Medical Plans	Urbana	Carle Clinic Association	1979	143,960 -6.8%	$33,836,410 4.8%	Also operates under second license as Health Alliance Midwest, mostly in Iowa.
HealthSpring of Illinois		HealthSpring, Nashville, TN	2004	4,166	NA	New Medicare Advantage Plan
HMO Illinois	Chicago	Blue Cross Blue Shield of Illinois	1976	717,753 -2.3%	$165,628,199 8.2%	Operated under three state licenses: BCI-HMO, Health Care Service Corp. - Blue Advantage and Health Care Service Corp.- HMO Illinois. Acquired Dreyer Health Plan in 1996 and Oxford Health Plan of Illinois (founded as Compass Health Plan) in 1998.
Humana Health Plan, Inc.	Chicago	Humana, Louisville, KY	1972	136,208 -35.4%	-$6,824,661 - 0.4%	Acquired Michael Reese Health Plan; and combined with second HMO license in Illinois.
John Deere Health Plan, Inc.	Moline	John Deere	1992	30,191 -9.7%	$22,430,613 3.4%	Includes Heritage National Health Plans in Illinois and Iowa, previously a separate HMO
Medical Associates Health Plan	Dubuque, IA	Medical Associates Clinics and Health Plans CO	1987	3,110 -0.4%	$2,171,951 3.4%
Mercy Health Plan of Missouri	Chesterfield, MO	Mercy Health	1995	4,231 -31.1%
NevadaCare	Las Vegas, NV	i/mx Companies, Tempe, AZ	1996	603 -2.1%	$130,587 0.1%
OSF Health Plans	Peoria	OSF Healthcare System	1993	66,959 0.7%	$5,918,226 2.2%
Personal Care Insurance of Illinois	Champaign	Coventry Health, Bethesda, MD	1988	56,580 -3.2%	$18,314,926 7.9%	Coventry Health Care acquired HMO in 2003.
UNICARE Health Plans of the Midwest, Inc.	Chicago	Wellpoint , Inc., Indianapolis, IN	1973	128,556 -3.7%	$2,000,000 0.5%	Rush-Presbyterian-St. Luke's Medical Center founded Anchor Health Plan and Access Health. Prudential acquired NorthCare in 1982. Acquired by Wellpoint Health Networks and operated under UniCare name
Union Health Service	Chicago	Non-profit	1955	36,734 -1.7%	$600,536 1.5%
UnitedHealthcare of Illinois	Chicago	United HealthCare, Minnetonka, MN	1976	30,293 -217%	$5,247,177 3.5%	Incorporated MetraHealth of Greater Chicago (established 1986), MetraHealth of Illinois, Chicago HMO (founded as Roosevelt Health Plan in 1976) and Share Health Plan (1983). Also operates as United HealthCare of the Midwest in St. Louis area.
UnitedHealthcare of the Midwest	St. Louis	United HealthCare, Minnetonka, MN	1985	8,947 -18.0%	$32,550,335 6.2%

Net income for operations in Illinois and other states for CIGNA St. Louis, Group Health Plan, Health Alliance Midwest, Humana, John Deere, Medical Associates, Mercy Health Plan of Missouri, NevadaCare and UnitedHealthcare of the Midwest

These HMOs are licensed in Illinois but had no enrollees as of December 2005: HealthLink, HMO Missouri, MercyCare Co., Premier Medical Insurance Group, Wellmark Health Plan of Northern Illinois, Inc., Elgin (Blue Cross Blue Shield of Iowa).

These HMOs have gone out of business in recent years: Accord Health Plan (Westmont); American Health Care Providers (Richton, which had acquired all or parts of Principal Health of Illinois, Maxicare and Community Health Choice); Unity HMO; University of Illinois HMO, Rockford Health Plan and Benchmark Health Plan (Rockford, HMO line of business); Community Health Plan of Sarah Bush Lincoln (Charleston), Country Health Plan (part of Country Companies), Bloomington, and Illinois Masonic Health Plan (Chicago).

updated January 2007

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