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Quest Diagnostics
One of 5 diagnostics imaging or lab service listings in Castro Valley.
About Quest Diagnostics
Quest Diagnostics is a diagnostics imaging or lab service in the health and medical sector, based in Castro Valley, CA. Its recorded address is 20400 Lake Chabot Rd, 94546-5311. The listing includes a telephone number, an official website. It is one of 5 diagnostics imaging or lab service listings tracked in Castro Valley; the nearest comparable listing is Labcop, about 0.4 km away. Quest Diagnostics has 2,797 listed locations in total; this page covers the Castro Valley branch.
- Address
- 20400 Lake Chabot Rd, Castro Valley, CA, 94546-5311
- Phone
- +15108811570
- Website
- questdiagnostics.com
- Social
Questions
Where is Quest Diagnostics located?
20400 Lake Chabot Rd, Castro Valley, CA, 94546-5311
How do I contact Quest Diagnostics?
+15108811570 · http://www.questdiagnostics.com/home.html
What type of business is Quest Diagnostics?
Quest Diagnostics is a diagnostics imaging or lab service (health and medical) in Castro Valley.
Quest Diagnostics branches
Quest Diagnostics has 2,797 listed locations. This branch is in Castro Valley.
- Weslaco78596-4281
- Laredo78041-3988
- McAllen78503-1531
- Alice78332-4197
- Kingsville78363-6371
- Bradenton34210-2819
- Corpus Christi78404-2500
- St Petersburg33713-5438
- St Petersburg33713-7146
- South Pasadena33707-2118
Nearby diagnostics imaging or lab service
- LabcopCastro Valley0.4 km
- Castro Valley Center ImagingCastro Valley0.4 km
- Sutter East Bay Medical FoundationCastro Valley0.4 km
- Castro Valley Open MRI Medical GroupCastro Valley1.3 km
- Prospero Vascular & InterventionalHayward2.0 km
- Quest DiagnosticsHayward5.4 km
- Laboratory Corporation of AmericaSan Leandro5.3 km
- Private STD Testing CenterSan Leandro5.3 km
- Quest DiagnosticsSan Leandro5.3 km
- LabcorpSan Leandro5.3 km
- Bayside ImagingHayward7.0 km
- LabcorpHayward7.1 km
- NorCal ImagingSan Leandro5.8 km
- NorCal Imaging - San LeandroSan Leandro5.8 km
- Histo-Tec LaboratoryHayward7.0 km
Cite this page
“Quest Diagnostics, Castro Valley — business.wiki, retrieved August 2026.” Facts on this page come from openly licensed data (Overture Maps Foundation) and are refreshed with each monthly release; sourcing is documented on the methodology page.