| Business | Phone |
| Electrocardiolgraphy Assoc 4803 Wesley St, Greenville 75401 | (903) 454-8133 |
| Highland Campus Billing Sltns 3077 County Road 3312, Greenville 75402 | (903) 455-5818 |
| Medical Billing Management 4000 Wesley St, Greenville 75401 | (903) 450-4450 |
| Specialty Billing & Collection 3931 Joe Ramsey Blvd E A, Greenville 75401 | (903) 455-0771 |
| Pro Bill Systems Inc 3900 Joe Ramsey Blvd E, Greenville 75401 | (903) 450-4679 |
| Per-Se Technologies 8401 Jack Finney Blvd, Greenville 75402 | (903) 453-2400 |