AARP
Ancillary Care Services (ACS)
BCBS
BeechStreet
CorVel
Coventry
Evolutions Healthcare Systems, Inc.
First Health
Fortified Provider Network PPO
GEHA
Galaxy Health Network PPO
Health Management Network (HMN)
HealthChoice
Humana
Integrated Health Plans (IHP)
Medicare (Part B)
MultiPlan
Mutual Assurance Administrators (MAA)
National Preferred Provider Network (NPPN)
Network Synergy Group (NSG)
PHCS
Pacificare
PPO NEXT
PPO USA
Prime Health Services
Provider Select, Inc.
RockPort Healthcare Group, Inc.
Secure Horizons
TLC Advantage, LLC
Three Rivers Provider Network (TRPN)
USA Managed Care Organization
Union Pacific Railroad Employees Health System
United Healthcare