Locations

Health Care Service Corporation (HCSC) is a family of companies operating the Blue Cross and Blue Shield plans in Illinois, New Mexico, Oklahoma and Texas.

Illinois Locations

Chicago — Headquarters
300 E Randolph Street
Chicago, Illinois 60601
Main Switchboard: 312-653-6000
Travel Directions 

Chicago
111 East Wacker
Chicago, Illinois 60601
Main Switchboard: 312-819-9500
Travel Directions 

Chicago
955 W Cermak Road
Chicago, Illinois 60616
Main Switchboard: 312-850-6686
Travel Directions 

Belleville (Dental Network of America)
7330 Westfield Plaza Drive
Belleville, Illinois 62226
Main Switchboard: 618-222-6176
Travel Directions 

Danville
3290 E Main Street
Danville, Illinois 61834
Main Switchboard: 217-477-2100
Travel Directions 

Downers Grove
1020 West 31st Street
Downers Grove, IL 60515
Main Switchboard: 630-824-5500
Travel Directions 

Jacksonville
1125 Wall Street
Jacksonville, Illinois 62650
Main Switchboard: 217-243-9329
Travel Directions 

Marion
5001 Meadowland Parkway
Marion, Illinois 62959
Main Switchboard: 618-998-2738
Travel Directions 

Mattoon
1100 Broadway Avenue
Mattoon, Illinois 61938
Main Switchboard: 217-258-6244
Travel Directions 

Naperville (Hallmark Service Corp.)
1000 E Warrenville Road Suites 165, 300 & 400
Naperville, Illinois 60563
630-328-4400
Travel Directions 

Quincy
1400 N 30th Street
Quincy, Illinois 62301
Main Switchboard: 217-228-6100
Travel Directions 

Rockford
2787 McFarland Road
Rockford, Illinois 61107
Main Switchboard: 815-639-7100
Toll Free Number: 866-603-7370
Travel Directions 

Springfield
3405 Liberty Drive
Springfield, Illinois 62704
Main Switchboard: 217-698-2100
Travel Directions 

Waukegan — Data Center
3625 Amhurst Parkway
Waukegan, Illinois 60085
Main Switchboard: 847-473-4125
Travel Directions