Plan Administrators

Plan Component	Administrator's Name	Customer Service Phone Numbers	Website Address
UnitedHealthcare Group Medicare Advantage PPO	UnitedHealthcare Customer Service Dept. PO Box 30769 Salt Lake City, UT 84130-0769	888-223-1092 TTY users, call 711	uhcretiree.com/soi
Aetna Medicare Plan (HMO)	Aetna Medicare PO Box 981106 El Paso, TX 79998-1106	855-223-4807 TTY users, call 711	stateofillinois.aetnamedicare.com
Health Alliance MAPD HMO	Health Alliance 3310 Fields South Drive Champaign, IL 61822	877-795-6131 TTY users, call 711	healthallianceretiree.org/soi
Humana Employer Medicare HMO	Humana Employer Medicare HMO PO Box 14168 Lexington, KY 40512	800-951-0125 TTY users, call 711	our.humana.com/soi
Medicare COB Unit	CMS Group Insurance 801 South 7th Street PO Box 19208 Springfield, IL 62794-9208	217-782-2548 800-442-1300 800-526-0844 (TDD/TTY)	benefitschoice.il.gov
Retirement System	Teachers' Retirement System 2815 W, Washington St. PO Box 19253 Springfield, IL 62794-9253	877-927-5877 TTY users, call 711	trsil.org
Medical Plans	MyBenefits Service Center 134 N. LaSalle Street Chicago, IL 60602	844-251-1777 844-251-1778 (TDD/TTY)	MyBenefits.illinois.gov

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