Contact Us

Health Care Service Corporation
Corporate Headquarters
300 East Randolph Street
Chicago, Illinois 60601
312-653-6000

If you are a member of Blue Cross and Blue Shield of Illinoisnew window, Blue Cross and Blue Shield of New Mexiconew window, Blue Cross and Blue Shield of Oklahomanew window or Blue Cross and Blue Shield of Texasnew window and have a question about a claim or coverage benefits, please refer to the back of your membership card for your customer service telephone number or click on the link for your Blue Cross and Blue Shield Plan.