| Business | Phone |
| Spectrum Medical Management 425 W Bonita Ave # 110, San Dimas 91773 | (909) 599-0981 |
| Access Billing Po Box 476, San Dimas 91773 | (909) 592-2346 |
| Accubill Inc 284 E Arrow Hwy, San Dimas 91773 | (909) 599-6118 |
| J & J Billing Inc 111 E Arrow Hwy, San Dimas 91773 | (909) 305-0714 |
| Joint Pole Committee 437 S Cataract Ave, San Dimas 91773 | (909) 592-4001 |
| Primary Care Management 417 W Allen Ave, San Dimas 91773 | (909) 971-9334 |
| Westshore Lien Management 417 W Allen Ave, San Dimas 91773 | (909) 592-1105 |
| Spectrum Medical Mgmt Svc 425 W Bonita Ave, San Dimas 91773 | (909) 394-0065 |