| Business | Phone |
| Dnr Medical Billing 9229 Sepulveda Blvd, North Hills 91343 | (818) 920-4844 |
| Master Billing Svc North Hills 91343 | (818) 893-6919 |
| Medic Billing Solutions 16417 Plummer St, North Hills 91343 | (818) 892-7255 |
| Physician Medical Billing 9406 1/2 Noble Ave, North Hills 91343 | (818) 830-0100 |