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

Quest Diagnostics LLC

Organization Clinical Medical Laboratory · NPI 1376852558

Quest Diagnostics LLC is a Clinical Medical Laboratory in Stonington, Connecticut. Registered with an NPI since 2010.

In the registry since
2010
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 →

Practice location Address checks out

55 Wilcox Rd
Stonington, CT 06378-2612
Phone: (860) 572-8834
Show map & directions

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

Specialties & licences

Clinical Medical Laboratory (primary) Taxonomy 291U00000X

Record details

NPI number1376852558
Entity typeOrganization (Type 2)
Organization subpartYes
Parent organizationQuest Diagnostics Incorporated
Authorized official Gerald Cartier — Vp Of Revenue Services · (484) 676-7000
NPI enumeratedOctober 5, 2010
Last updated in NPPESOctober 12, 2012
Mailing address1001 Adams Ave, 2nd Floor Mrgov, Norristown, PA 19403-2429