| Business | Phone |
| 1st American Bankcard Billing 1921 E 8 Mile Rd, Warren 48091 | (586) 427-5418 |
| Accurate Billing Svc 27190 Dequindre Rd, Warren 48092 | (586) 751-6642 |
| Associates In Physician Billng Po Box 5188, Warren 48090 | (586) 264-9127 |
| South Oakland Physician Svc 28120 Dequindre Rd 100, Warren 48092 | (586) 573-0709 |
| Diamond Billing 26811 Ryan Rd, Warren 48091 | (586) 754-1233 |
| Premier Billing Specialist 27182 Dequindre Rd, Warren 48092 | (586) 751-6034 |