| Aetna |
| Ameriben |
| Anthem Blue Cross/Blue Shield |
| Assurant Health |
| Beech Street |
| CCN |
| Cigna |
| Cofinity |
| Coventry Health |
| Guardian Life |
| Humana |
| Mail Handlers |
| Meritain Health |
| Multi Plan |
| Mutual of Omaha |
| PHCS - Private Health Care Systems |
| RMHP - Rocky Mountain Health Plan |
| United Healthcare |
| United Healthcare - UMR |