- Aetna
- Aflac
- Allstate
- Assurant Health
- BCBS
- Cameron Mutual
- Cigna
- CNA
- Humana
- Liberty Mutual
- MetLife
- Missouri Empl. Mut.
- Mutual of Omaha
- Nationwide
- Old Republic
- Progressive
- State Auto
- Sun Life Financial
- Travelers
- United Healthcare
- William Griffey, III
- William Griffey, IV