OrganizationActive
Quest Diagnostics LLC Il
NPI 1669298055 · Clinical Medical Laboratory · Chicago, IL
Quest Diagnostics LLC Il is a Clinical Medical Laboratory organization in Chicago, IL (NPI 1669298055).
Provider details
- NPI number
- 1669298055
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Parent organization
- Quest Diagnostics Incorporated
- Organization subpart
- Yes
- Authorized official
- Leah Timmerman, Vice President(973) 520-2700
Specialties & taxonomies
Laboratories
Profile Score
Established profile(55/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
1431 N Western Ave Ste 202
Chicago, IL 60622-7712
Phone: (773) 267-2272
Street-level locationGet directions
Mailing address
14275 Midway Rd Ste 400
Addison, TX 75001-3661
Registry dates
- Enumerated
- 2024-12-02
- Last updated
- 2024-12-02
- Certified
- 2024-12-02
Frequently asked questions
- What is Quest Diagnostics LLC Il's NPI number?
- Quest Diagnostics LLC Il's National Provider Identifier (NPI) is 1669298055, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Quest Diagnostics LLC Il?
- Quest Diagnostics LLC Il is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Quest Diagnostics LLC Il located?
- Quest Diagnostics LLC Il's practice location on file with NPPES is 1431 N Western Ave Ste 202, Chicago, IL 60622-7712.
- What is Quest Diagnostics LLC Il's phone number?
- The practice phone number listed in the NPPES registry for Quest Diagnostics LLC Il is (773) 267-2272.
- Who is the authorized official for Quest Diagnostics LLC Il?
- The authorized official listed on Quest Diagnostics LLC Il's NPPES record is Leah Timmerman, Vice President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Quest Diagnostics LLC Il's NPI active?
- Yes — Quest Diagnostics LLC Il's NPI (1669298055) is active in the NPPES registry as of the last update on 2024-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.