| Business | Phone |
| Dimensions Medical Labs Inc 18250 Roscoe Blvd # 120, Northridge 91325 | (818) 773-9391 |
| Western Health Sciences & Med 18546 Roscoe Blvd # 310, Northridge 91324 | (818) 349-4644 |
| Accuscan Diagnostic Inc 9335 Reseda Blvd, Northridge 91324 | (818) 775-9400 |
| United Westlab 18546 Roscoe Blvd, Northridge 91324 | (818) 700-8517 |
| Quest Diagnostics Inc 8550 Balboa Blvd, Northridge 91325 | (818) 830-2266 |
| Unilab Corp 18433 Roscoe Blvd # 105, Northridge 91325 | (818) 772-9386 |
| United Westlab 18350 Roscoe Blvd, Northridge 91325 | (818) 886-8148 |
| Varaprasathan Gi 18250 Roscoe Blvd, Northridge 91325 | (818) 886-9604 |
| Western Health Sciences & Med 18251 Roscoe Blvd # 202, Northridge 91325 | (818) 349-4644 |