Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Quest Diagnostics LLC Il

Organization Clinical Medical Laboratory · NPI 1881203826

Quest Diagnostics LLC Il is a Clinical Medical Laboratory in Milwaukee, Wisconsin. Registered with an NPI since 2020.

In the registry since
2020
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

4852 S 6th St
Milwaukee, WI 53221-2462
Phone: (866) 697-8378
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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 number1881203826
Entity typeOrganization (Type 2)
Organization subpartYes
Parent organizationQuest Diagnostics Inc
Authorized official Leah Timmerman — Vice President · (973) 520-2700
NPI enumeratedJuly 27, 2020
Last updated in NPPESSeptember 30, 2026
Certification dateSeptember 30, 2026
Mailing address4770 Regent Blvd, Irving, TX 75063-2445

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