Blue Cross and Blue Shield of Illinois
- Individual Plan Customer Service
1-866-649-2034
- Members First Discount Program
1-888-788-4184
- Blue Advantage (2-50 employees)
Customer Service
PPO: 1-800-541-2767
HMO: 1-800-892-2803
- Large Group (51 or more employees)
Customer Service
PPO: 1-800-327-8497
HMO: 1-800-892-2803