| Business | Phone |
| Practi-Cal Solutions 1233 W Gardena Blvd # 205, Gardena 90247 | (310) 327-9966 |
| United Practice Billing Svc 18726 S Western Ave # 208, Gardena 90248 | (310) 515-5004 |
| Provider Medical Billing Svc Gardena 90248 | (310) 768-8522 |
| Canady Associates Medical 1415 Marine Ave, Gardena 90247 | (310) 354-3712 |
| Classic Medical Billing 13124 Purche Ave, Gardena 90249 | (310) 851-5688 |
| Cds Assoc 1435 W 146th St, Gardena 90247 | (310) 327-3956 |
| Med Comp Medical Billing Mgmt 1875 W Redondo Beach Blvd, Gardena 90247 | (310) 217-2252 |
| Synapse 13722 Harvard Pl, Gardena 90249 | (310) 715-8464 |