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 1669298055

Quest Diagnostics LLC Il is a Clinical Medical Laboratory in Chicago, Illinois. Registered with an NPI since 2024.

In the registry since
2024
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1431 N Western Ave Ste 202
Chicago, IL 60622-7712
Phone: (773) 267-2272
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Medical Laboratory (primary) Taxonomy 291U00000X

Record details

NPI number1669298055
Entity typeOrganization (Type 2)
Organization subpartYes
Parent organizationQuest Diagnostics Incorporated
Authorized official Leah Timmerman — Vice President · (973) 520-2700
NPI enumeratedDecember 2, 2024
Last updated in NPPESDecember 2, 2024
Certification dateDecember 2, 2024
Mailing address14275 Midway Rd Ste 400, Addison, TX 75001-3661

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