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.
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

 

Last Updated 09/02/2020