| Business | Phone |
| Montclair Family Care Inc 653 E E St # 109, Ontario 91764 | (909) 445-9700 |
| Ontario Multi Specialty 525 N Laurel Ave, Ontario 91762 | (909) 460-9202 |
| Prime Care Medical Network 3281 E Guasti Rd, Ontario 91761 | (909) 605-8000 |
| Royal Medical Center 653 E E St # 109, Ontario 91764 | (909) 395-9888 |