| Business | Phone |
| Allied Billing Center 3900 Mayette Ave, Santa Rosa 95405 | (707) 525-3500 |
| Brookwood Internal Medical 500 Doyle Park Dr # 304, Santa Rosa 95405 | (707) 569-9367 |
| Ccs Billing Center 1221 Tapadera Dr, Santa Rosa 95407 | (707) 576-1566 |
| Customized Billing & Cnsltng Po Box 9187, Santa Rosa 95405 | (707) 538-5226 |
| Health Services Integration 5570 Skylane Blvd, Santa Rosa 95403 | (707) 569-7600 |
| Health Services Integration 825 Sonoma Ave # B, Santa Rosa 95404 | (707) 571-2320 |
| M D Condren Medical Billing 585 W College Ave # A, Santa Rosa 95401 | (707) 535-4300 |
| Mba Po Box 2892, Santa Rosa 95405 | (707) 575-3727 |
| Medi Support Medical Billing Santa Rosa 95401 | (707) 579-0525 |
| Northwestern Utility Billing Po Box 9220, Santa Rosa 95405 | (707) 526-1425 |
| Quickstart Software Svc 53 Charro Dr, Santa Rosa 95401 | (707) 829-6870 |
| United Support Systems Inc 3628 Airway Dr, Santa Rosa 95403 | (707) 575-9984 |