- Aetna
- AIG
- Banner Life
- Berkshire Insurance Group
- CareFirst BlueCross BlueShield
- Chubb
- CNA
- Colonial Life
- Coverys
- Dominion Natl.
- Guardian
- Hartford
- Kaiser Permanente
- Lincoln Financial Group
- Medical Mutual
- Principal
- Prudential
- Sun Life Financial
- TASC
- Travelers
- United Healthcare