Aetna
Blue Cross and Blue Shield of Illinois (BCBSIL)
Anthem Blue Cross and Blue Shield
(formerly Blue Cross Blue Shield of Missouri (BCBSMo,) Alliance, AllianceChoice, BlueCHOICE)
Beech Street
Cigna
Essence Healthcare
First Health / CCN
Focus Healthcare
Great-West Healthcare
Group Health Plan (GHP)
Harmony Health Plan
HealthLink
Health Alliance
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Illinois Department of Healthcare and Family Services (HFS) formerly the Department of Public Aid
Medicare Part B:
Railroad Medicare (RR Medicare)
United Mine Workers of America (UMWA)
Mercy Health Plan
MultiPlan (formerly UP&UP, ProAmerica, HealthNetwork, BCE Emergis, PreferredPlan)
Private Healthcare Systems (PHCS)
Tricare
Unicare
UnitedHealthcare
Wellmark HealthNetwork
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