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Quest Diagnostics
One of 20 diagnostics imaging or lab service listings in Ontario.
About Quest Diagnostics
Quest Diagnostics is a diagnostics imaging or lab service in the health and medical sector, based in Ontario, OH. Its recorded address is 1750 W 4th St, 44906. The listing includes a telephone number, an official website. It is one of 20 diagnostics imaging or lab service listings tracked in Ontario; the nearest comparable listing is Labcorp, about 3.7 km away in Mansfield. Quest Diagnostics has 2,797 listed locations in total; this page covers the Ontario branch.
- Address
- 1750 W 4th St, Ontario, OH, 44906
- Phone
- 5674251555
- Website
- locations.questdiagnostics.com
Questions
Where is Quest Diagnostics located?
1750 W 4th St, Ontario, OH, 44906
How do I contact Quest Diagnostics?
5674251555 · https://locations.questdiagnostics.com/oh/ontario/1750-w.-4th-st
What type of business is Quest Diagnostics?
Quest Diagnostics is a diagnostics imaging or lab service (health and medical) in Ontario.
Quest Diagnostics branches
Quest Diagnostics has 2,797 listed locations. This branch is in Ontario.
- 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
- LabcorpMansfield3.7 km
- Test Me DNAMansfield3.8 km
- LabcorpMansfield3.8 km
- Quest DiagnosticsMansfield4.2 km
- Rehabilitation Services - Mansfield Hospital - Medical Office BuildingMansfield4.5 km
- Imaging and Mammography Services - Mansfield HospitalMansfield4.5 km
- Quest DiagnosticsMansfield4.5 km
- Priority STD Testing MansfieldMansfield4.8 km
- Quest DiagnosticsMansfield4.8 km
- Quest DiagnosticsLexington10.3 km
- UH Samaritan Richland Health Center Radiology ServicesMansfield8.3 km
- Quest DiagnosticsMansfield8.3 km
- Imaging and Mammography Services - Shelby HospitalShelby14.8 km
- Quest DiagnosticsShelby14.8 km
- Mammography CenterGalion19.0 km
Cite this page
“Quest Diagnostics, Ontario — 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.