The following is a list of health insurance companies with Medicare plans offered by HealthPlanOne.
- ACI
- Aetna Health and Life Insurance Company
- Aetna/Coventry
- Affinity Health
- Anthem/Empire
- Blue Cross Blue Shield of AR
- Blue Cross Blue Shield of AZ
- Blue Cross Blue Shield of IL
- Blue Cross Blue Shield of LA
- Blue Cross Blue Shield of MI
- Blue Cross Blue Shield of NE
- Blue Cross Blue Shield of NM
- Blue Cross Blue Shield of OK
- Blue Cross Blue Shield of TX
- Blue Cross Blue Shield of WY
- Blue Cross Blue Shield SC
- Blue Cross Blue Shielf of TN
- Blue Shield of California
- CDPHP Universal Benefits
- Central United Life
- Cigna
- Cigna HealthSpring
- CLI
- ConnectiCare
- Dentalins.com
- EmblemHealth
- Envision
- Excellus NY
- Freedom Health FL SNP
- Gerber
- Government Personnel Mutual
- Guarantee Trust Life
- Harvard Pilgrim
- Heartland
- Highmark
- Horizon
- Humana
- Manhattan Life
- Mutual of Omaha
- Priority Health
- Regence
- Scan
- Spirit
- Senior Life
- SilverScript
- Standard Life
- UnitedHealthCare
- Universal American
- Wellcare
