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Quest Diagnostics
One of 9 diagnostics imaging or lab service listings in Smithtown.
About Quest Diagnostics
Quest Diagnostics is a diagnostics imaging or lab service in the health and medical sector, based in Smithtown, NY. Its recorded address is 300 E Main St Ste 3A, 11787. The listing includes a telephone number, an official website. It is one of 9 diagnostics imaging or lab service listings tracked in Smithtown; the nearest comparable listing is Northwell Health Labs at Smithtown, about 0.7 km away in Village of the Branch. Quest Diagnostics has 2,797 listed locations in total; this page covers the Smithtown branch.
- Address
- 300 E Main St Ste 3A, Smithtown, NY, 11787
- Phone
- 6316266201
- Website
- locations.questdiagnostics.com
Questions
Where is Quest Diagnostics located?
300 E Main St Ste 3A, Smithtown, NY, 11787
How do I contact Quest Diagnostics?
6316266201 · https://locations.questdiagnostics.com/ny/smithtown/300-e-main-st
What type of business is Quest Diagnostics?
Quest Diagnostics is a diagnostics imaging or lab service (health and medical) in Smithtown.
Quest Diagnostics branches
Quest Diagnostics has 2,797 listed locations. This branch is in Smithtown.
- 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
- Northwell Health Labs at SmithtownVillage of the Branch0.7 km
- Labcorp at WalgreensSmithtown1.0 km
- Little Angels CenterSmithtown1.0 km
- Labcorp at WalgreensSmithtown1.6 km
- McClain Laboratories LLCSmithtown1.7 km
- Zwanger-Pesiri RadiologySmithtown1.9 km
- LabcorpHauppauge4.7 km
- Pure MammographyLake Grove4.0 km
- Islandia MRI AssociatesIslandia5.3 km
- Stand-Up MRI of IslandiaIslandia5.6 km
- Quest DiagnosticsHauppauge5.8 km
- Stony Brook Advanced ImagingStony Brook5.3 km
- Stony Brook University SiteBrookhaven6.1 km
- LabcorpBrookhaven5.7 km
- Natera Patient Service CenterBrookhaven5.7 km
Cite this page
“Quest Diagnostics, Smithtown — 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.