| Aetna |
Kemper |
| Assurant Health |
Lincoln National Companies |
| Berkley Mid-Atlantic Group |
Massachusetts Mutual Life |
| Cincinnati Insurance |
Met Life |
| CNA Group |
Penn Mutual Life Insurance Company |
| Dearborn National |
Principal Financial Group |
| Delta Dental |
Progressive |
| Eastern Alliance Group |
Provident Life and Accident |
| Foremost / Farmers |
Reliance-Standard |
| Fortis |
Standard Insurance Company |
| Guardian |
Travelers |
| The Hartford |
United HealthCare |
| Health America / Health Assurance / Coventry |
UNUM |
| Highmark Blue Cross & Blue Shield |
UPMC Health Plan |
| Highmark Life & Casualty Group |
|
| John Hancock |
|