- Anthem Blue Cross Blue Shield
- Auto-Owners
- Badger Mutual Insurance Company
- Branch
- Bristol West
- Chorus Community Health Plans
- Clearcover
- Common Ground Healthcare
- Dean Health Plan
- Employers
- Erie Insurance
- First Chicago Ins.
- Foremost
- Founders
- Gainsco
- Germantown Mutual
- Grange
- Hagerty
- Hartford
- ICW Group
- IMT Insurance
- Main St. America
- National General
- Philadelphia
- Pie Insurance
- Progressive
- Quartz
- SFM
- Stillwater Ins. Group
- The General
- Travelers
- United Healthcare
- Wisconsin Mutual
- WPS Health