- AHF (Aids Healthcare Foundation)
- Altamed
- Blue Cross PPO
- Brand New Day
- Cal Care IPA
- Care 1st
- CareMore
- Global Care Medical Group IPA
- Good Samaritan Medical Practice Associates
- HCLA (Health Care LA)
- Healthcare Partners
- Korean American Medical Group
- LaSalle Medical Associates
- Medi-Cal
- Medicare
- Maximed
- Orange County Physicians IPA
- Physicians Alliance
- Preferred IPA of California
- Primary Care Associates
- Prospect/ Maverick Medical
- Prudent Medical Group
- Regal Medical Group
- Regent Medical Group
- San Judas Medical Group
- Seoul Medical Group
- St. Vincent IPA
- Superior Choice
- Tricare
- United Physician INC
- Universal Care
- Vantage Medical Group
