| Business | Phone |
| Contra Costa Imaging Center 2410 High School Ave, Concord 94520 | (925) 687-5600 |
| Quest Diagnostics Inc 2425 East St # 6, Concord 94520 | (925) 798-9181 |
| Mt Diablo Laboratory Svc 2222 East St # 104, Concord 94520 | (925) 674-2014 |
| Mt Diablo Laboratory Svc 2700 Grant St # 107, Concord 94520 | (925) 674-2684 |
| Muir Lab 2415 High School Ave # 200, Concord 94520 | (925) 676-1801 |
| Quest Diagnostics Inc 2550 Almond Ave # 6, Concord 94520 | (925) 687-2555 |