Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Quest Diagnostics LLC

Organization Clinical Medical Laboratory · NPI 1780886333

Quest Diagnostics LLC is a Clinical Medical Laboratory in Stamford, Connecticut. Licensed in Connecticut. Registered with an NPI since 2007.

Licensed in
CT
In the registry since
2007
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1250 Summer St Ste 206
Stamford, CT 06905-5358
Phone: (877) 868-2191
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Medical Laboratory (primary) Taxonomy 291U00000X (CT)

Record details

NPI number1780886333
Entity typeOrganization (Type 2)
Organization subpartYes
Parent organizationQuest Diagnostics Incorporated
Authorized official G Cartier — Vp Of Billing · (484) 676-7731
NPI enumeratedJune 5, 2007
Last updated in NPPESNovember 26, 2007
Mailing address2750 Monroe Blvd, Norristown, PA 19403-2429

Other providers in Stamford