- Advantage
- Aetna
- Assurant
- Delta Dental
- Health Resources
- Humana
- Key Healthy Partners
- Madison Natl.
- MedBen
- Medical Mutual
- Nippon Life
- Pekin Life
- Physicians Health Plan
- SIHO
- Starmark
- United Security Life
- UnitedHealthcare
- US Health & Life
- Welborn Health Plans
- Angelo Prati, President
- Marcy Prati