Allstate
Concord Group Insurance
Farmers Insurance Company
Foremost Insurance
Great Falls Insurance Company
Harleysville Insurance Company
Hartford Insurance Company
Maine Employers Mutual (MEMIC)
Main Street America Group
Metropolitan Life
Patriot Insurance Company
Peerless/Safeco
Progressive
Philadelphia Insurance Company
National General
Travelers Insurance
Aetna
Anthem Blue Cross
Assurant Health
Harvard Pilgrim
Maine Community Health Options