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

Quest Diagnostics LLC Il

Organization Clinical Medical Laboratory · NPI 1346389764

Quest Diagnostics LLC Il is a Clinical Medical Laboratory in Schaumburg, Illinois. Licensed in Illinois. Registered with an NPI since 2007.

Licensed in
IL
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 →

Practice location Address checks out

506 E State Pkwy
Schaumburg, IL 60173-4538
Phone: (708) 885-2010
Show map & directions

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

Specialties & licences

Clinical Medical Laboratory (primary) Taxonomy 291U00000X · Licence 14D0416537 (IL)

Record details

NPI number1346389764
Entity typeOrganization (Type 2)
Organization subpartYes
Parent organizationQuest Diagnostics Incorporated
Authorized official Leah Timmerman — Vice President · (973) 520-2700
NPI enumeratedFebruary 5, 2007
Last updated in NPPESJuly 10, 2026
Certification dateJuly 10, 2026
Mailing address4770 Regent Blvd, Irving, TX 75063-2445

Other providers in Schaumburg