Avery Hall Insurance Group
- Accident Fund Insurance Company
- Aetna
- Brethren Mutual
- CareFirst BlueCross BlueShield
- Cheaspeake Employers
- Cincinnati Casualty Company
- Cumberland Insurance Group
- Delta Dental
- Dominion Natl.
- Donegal
- Foremost
- Goodville Mutual
- Guard
- Guardian
- Hanover
- Harford Mut.
- Hartford
- HCC
- Highmark
- Humana
- Liberty Mutual
- Lincoln Financial Group
- Main Street America
- Maryland Health
- Medical Mutual
- Mutual of Omaha
- Peninsula
- Principal Financial Group
- Progressive
- Safeco
- Selective
- Sun Life Financial
- The Standard
- Travelers
- United Healthcare
- Utica National Insurance Group
- VSP
- Wallach & Co
- Windsor-Mount Joy Mutual