| Business | Phone |
| Billing Technology 30942 Grand River Ave, Farmington 48336 | (248) 442-0189 |
| Billing Technology 23125 Springbrook Dr, Farmington 48336 | (248) 478-8184 |
| Elite Medical Billing 22000 Springbrook Ave 201, Farmington 48336 | (248) 478-5234 |
| Oakland Corp Billing 24840 Ravine Ct, Farmington 48335 | (248) 615-9380 |
| Oakland Corp Billings 24918 Ravine Ct, Farmington 48335 | (248) 476-7541 |
| Perfect Documents Billing Svc 27334 W Skye Dr, Farmington 48334 | (248) 471-6455 |