Quest Diagnostics

Lab Testing at Proactive Work El Segundo

Quest partner location in El Segundo, CA 90245.

Partner Location

This location is part of Quest's partner network. Services and availability may differ from a standard Quest Patient Service Center. Please call 310-321-5500 before visiting to confirm they accept your lab order.

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Note: tests available at this location depend on its services. Confirm by calling before visiting.

Address

920 N Nash St
El Segundo, CA 90245
Los Angeles County

310-321-5500

Hours

Monday	8:00 AM – 5:00 PM
Tuesday	8:00 AM – 5:00 PM
Wednesday	8:00 AM – 5:00 PM
Thursday	8:00 AM – 5:00 PM
Friday	8:00 AM – 5:00 PM
Saturday	Closed
Sunday	Closed

Nearby alternatives

LabCorp El Segundo
390 N Pacific Coast Hwy Suite 2080, El Segundo, CA 90245
0.7 mi
Quest Diagnostics - Hawthorne West 118th - Employer Drug Testing Not Offered
4477 W 118th St Ste 102, Hawthorne, CA 90250
1.9 mi
CM & Associates Inc
8800 South Sepulveda Blvd Suite 8, Westchester, CA 90045
2 mi
Anzavista Drug & Alcohol Testing
8726 S Sepulveda Blvd Ste E, Los Angeles, CA 90045
2.1 mi
LabCorp Manhattan Beach
2400 N Sepulveda Blvd, Manhattan Beach, CA 90266
2.5 mi

About this location

Quest partner location. Quest Diagnostics operates one of the largest networks of clinical laboratories in the United States, offering a wide range of diagnostic tests for patients, physicians, and employers.

Listing last updated 2026-04-25.