| Company Name | Address | City | State | Zip Code | Phone Number | Fax Number |
| AETNA US HEALTHCARE | 333 W WACKER DR, STE 2100 | CHICAGO | IL | 60606 | (312) 928-3234 | (999) 999-9999 |
| BIDNET | 20A RAILROAD AVE | ALBANY | NY | 12205 | (800) 677-1997 | (518) 438-0599 |
| BLUE CROSS BLUE SHIELD OF IL | 300 E RANDOLPH ST | CHICAGO | IL | 60601-5099 | (312) 653-1035 | (312) 729-2441 |
| E.REPUBLIC | 100 BLUE RAVINE RD | FOLSOM | CA | 95630 | (916) 932-1300 | (916) 932-1470 |
| HEALTH CARE SERVICE CORPORATION | 300 E RANDOLPH, FL 8, MUNI SAM | CHICAGO | IL | 60601 | (312) 653-1035 | (312) 729-2441 |
| INFOJINI INC | 10015 OLD COLUMBIA RD, STE B215 | COLUMBIA | MD | 21046 | (443) 257-0086 | (443) 283-4249 |
| INTERFLEX PAYMENTS LLC, D/B/A | 2508 HIGHLANDER WAY, STE 200 | CARROLLTON | TX | 75006 | (972) 269-3598 | (972) 861-0972 |
| SEVEN OUTSOURCE | 113 BARKSDALE PROFESSIONAL CTR | NEWARK | DE | 19711 | (315) 308-7852 | (315) 702-0205 |
| SMARTPROCURE INC | 700 W HILLSBORO BLVD, STE 4-100 | DEERFIELD BEACH | FL | 33441 | (888) 998-8675 | (954) 399-7067 |
| UNITED HEALTHCARE | 200 E RANDOLPH ST # 5300 | CHICAGO | IL | 60601-6602 | (952) 202-5867 | (855) 259-1924 |