- American LIFECARE
- BCE Emergis
- BeechStreet / Best Care (Limited Groups)
- Blue Cross & Blue Shield of Louisiana
- Chitimacha Indian Health Services
- CIGNA
- Community Care Network (CCN)
- Coventry
- Direct Care of America (DCA)
- Envision Care Alliance (formerly Advocate-Triage, Inc.)
- Evolutions Healthcare
- First Choice
- First Health
- GEHA PPO USA
- Hattiesburg Clinic PPO
- Health Payors Organization
- Humana
- Humana Veterans Healthcare Services
- Mississippi Physician Care Network
- Multiplan PPO
- Plan Vista Solutions (formerly National Preferred Provider Network)
- PPOplus
- Private HealthCare Systems (PHCS)
- State of Louisiana Office of Group Benefits (Formerly SEGBP)
- Three Rivers PPO
- TriCare
- United Networks of America
- United HealthCare
- Universal Health
- Verity HealthNet
- Verity Health Network National (VHN)
- VHA Gulf States

