| Accountable Health Plans of Texas | Admar Corporation (Multiplan) |
| Aetna Elect Choice EPO, Managed Choice POS, Open Choice PPO, Traditional Choice, Affordable HealthChoices, National Advantage Student Blanket | Affiliated Healthcare |
| Beech Street / CAPP Care | Benefit Planners (Preferred Health) |
| Blue Cross / Blue Shield EPO, PPO, POS, Traditional, ParPlan, Federal Employee | CCN Managed Care |
| Choice Care Network | Coastal Comp Health Network |
| Coventry (formerly First Health) | Direct Care |
| Elder Health Texas, Inc | Galaxy Health Network |
| Health Payors Organization | HealthSmart Preferred Care, Inc |
| Humana Choice Care Network PPO | Integrated Medical Systems |
| MedCorp Southwest, Inc | Medical Control, Inc ppoNEXT, PHN, Healthstar, HHPO |
| Medicare | Multiplan, Inc ChoiceOne, Preferred Plan |
| Private Healthcare Systems (PHCS) | ProAmerica Managed Care (Multiplan) |
| ProNet | Provider Alliance of Central Texas |
| Rockport Healthcare Grp Acc & Health | San Antonio Employer's Health Alliance |
| Texas Municipal League | Texas True Choice / Ethix Southwest |
| Unicare Classic, Performance | United Health Care |
| United Payors & United Providers (Multiplan) | USA Managed Care Organization |