| Business | Phone |
| Health Care Financial Resource 725 N 4th St, Longview 75601 | (903) 234-2400 |
| C & W Medical Billing 1602 Pine Tree Rd # 3, Longview 75604 | (903) 759-8886 |
| Crossroads Healthcare Mgmt Llc 434 E Loop 281, Longview 75605 | (903) 247-7878 |
| Specialty Group Svc 4777 Us Highway 259, Longview 75605 | (903) 663-4800 |
| Pro Serve 140 E Tyler St, Longview 75601 | (903) 234-2723 |
| Proserv 140 E Tyler St # 100, Longview 75601 | (903) 236-2736 |