Advocate BCBS HMO/Guidehealth (Formerly Magellan)
- Site # 099: Advocate Medical Group West
- Site # 124: Advocate Lutheran General Physician Partners
- Site # 294: Advocate Good Samaritan Physician Partners
- Site # 302: Advocate Christ Hospital Physician Partners
- Site # 331: Advocate Good Shepherd Physician Partners
- Site # 357: Advocate Illinois Masonic Physician Partners
- Site # 398: Advocate MG North Ave Oak Park
- Site # 464: Advocate Condell Physician Partners
- Site # 474: Advocate Sherman Physician Partners
- Site # 600: Advocate Health Care
Aetna
Allied Benefit Systems Inc.
Ascension BCBS HMO
- Site # 197: Ascension Health CIN
- Site # 199: Fox Valley Medicine Ltd
- Site #494: Ascension Health Saint Joseph Hospital Chicago
- Site # 495: Ascension Health Saint Francis Hospital Evanston
- Site # 496: Ascension Health Resurrection Medical Center Chicago
- Site # 497: Ascension Health Saints Mary and Elizabeth Medical Center Chicago
- Site # 498: Ascension Health St. Joseph Med Joliet
- Site # 499: Ascension Health St. Joseph Hospital Elgin
- Site # 500: Ascension Health St. Mary's Hospital Kankakee
- Site # 507 and 213: UChicago Medicine Physician Partners
BCBS PPO, Blue Choice, MyBlue Plus, Blue High Performance, Care First Administrators
Essential Health Partners BCBS HMO
- Site # 501: EHP - IPA
- Site # 502: Silver Cross
- Site # 504: EHP - Kane County IPA
Oak West BCBS HMO
- Site # 335: Oak West Primary Physician Association
Loyola Physician Partners BCBS HMO
- Site # 505 Loyola Physician Partners
- Site # 707: Weiss Health Providers
- Site # 708: West Suburban Health Providers
Evernorth/Cigna
Optum/United Health Care (UHC)
First Health Network
Meritain Health
Multiplan/PHCS Network
Prime Healthcare