| Business | Phone |
| Baybrook Services 1350 Valley Vista Dr # 108, Diamond Bar 91765 | (909) 396-6900 |
| Health Care Management Diamond Bar 91765 | (909) 612-0095 |
| Nexus Case Management Group 808 N Diamond Bar Blvd, Diamond Bar 91765 | (909) 860-7344 |
| Nexus Cost Container Diamond Bar 91765 | (909) 860-7344 |
| Medix Medical Assoc Diamond Bar 91765 | (909) 396-7992 |