| Business | Phone |
| Spectrum Billing Technologies 4511 Miller Rd G, Flint 48507 | (810) 720-5715 |
| Med-Pro Billing Specialists Flint 48503 | (810) 235-6998 |
| Mri Billing Dept 750 S Ballenger Hwy, Flint 48532 | (810) 762-4104 |
| Mid Michigan Medical Billing 5065 Miller Rd, Flint 48507 | (810) 720-3642 |