• Aetna
• Blue Cross Blue Shield
• Cigna
• Connecticare
• Emblem
• GHI
• HIP
• Health Smart
• Island Group Administration
• Local 1199
• MVP Select Care Inc
• Magnacare
• Medicare
• Multiplan
• NYSHIP - The Empire Plan
• Oxford
• POMCO Insurance Company
• Partners Health Plan Inc
• Qualcare Inc.
• Railroad Medicare
• Tricare
• United Healthcare