- Aetna U.S. Healthcare
- Altius Health Plans
- American International Group
- American International Group Life
- Ameritas
- Assurant Health
- Banner Life
- Berkshire Life
- Blue Cross and Blue Shield of Texas
- C.N.A. Financial Corp.
- CIGNA
- Delta Dental
- Empire General Life Assurance Corporation
- Empire HealthChoice
- Empire HealthChoice
- First Colony Life
- First Penn-Pacific Life
- GE Capital
- GE Life
- GE Life Assurance Company
- Golden Rule
- Great West Life
- GroupLink Reliastar
- Guardian
- Humana
- Humana Medical Plan, Inc.
- John Alden Life Insurance Company
- John Hancock Life Insurance Company
- ManuLife Financial
- Nationwide
- Pacific Life
- Principal Medical & Dental
- SafeGuard Insurance Company
- The Hartford
- The Standard Life Assurance Company
- Trustmark Insurance Company
- United Health Care
- United of Omaha Life Insurance Company
- UNUM Provident
- West Coast Life Insurance Company