| Business | Phone |
| Ambulance Reimbursement System 2610 Walbert Ave, Allentown 18104 | (610) 435-2277 |
| Direct Connect Medical Billing 2905 W Pennsylvania St, Allentown 18104 | (610) 770-6990 |
| Express Medical Billing Sols 1251 S Cedar Crest Blvd, Allentown 18103 | (610) 289-2980 |
| Health Care Billing 938 Cold Spring Rd, Allentown 18103 | (610) 351-5025 |
| Healthcare Financial Systems 1503 N Cedar Crest Blvd # 202, Allentown 18104 | (610) 820-9412 |
| Tama Medical Billing Svc 209 W Tilghman St, Allentown 18102 | (610) 351-0206 |