OrganizationActive
Quest Diagnostics LLC
NPI 1083205942 · Clinical Medical Laboratory · Chicago, IL
Quest Diagnostics LLC is a Clinical Medical Laboratory organization in Chicago, IL (NPI 1083205942).
Provider details
- NPI number
- 1083205942
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Parent organization
- Quest Diagnostics Incorporated
- Organization subpart
- Yes
- Authorized official
- Charles Bowles, Vice President(610) 454-6000
Specialties & taxonomies
Laboratories
Profile Score
Established profile(63/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs 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
3924 W Fullerton Ave
Chicago, IL 60647-2228
Phone: (773) 276-2229
Fax: (773) 276-2190
Street-level locationGet directions
Mailing address
1201 S Collegeville Rd
Collegeville, PA 19426-2998
Registry dates
- Enumerated
- 2021-02-02
- Last updated
- 2021-02-02
- Certified
- 2021-02-02
Frequently asked questions
- What is Quest Diagnostics LLC's NPI number?
- Quest Diagnostics LLC's National Provider Identifier (NPI) is 1083205942, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Quest Diagnostics LLC?
- Quest Diagnostics LLC is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Quest Diagnostics LLC located?
- Quest Diagnostics LLC's practice location on file with NPPES is 3924 W Fullerton Ave, Chicago, IL 60647-2228.
- What is Quest Diagnostics LLC's phone number?
- The practice phone number listed in the NPPES registry for Quest Diagnostics LLC is (773) 276-2229.
- Who is the authorized official for Quest Diagnostics LLC?
- The authorized official listed on Quest Diagnostics LLC's NPPES record is Charles Bowles, Vice President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Quest Diagnostics LLC's NPI active?
- Yes — Quest Diagnostics LLC's NPI (1083205942) is active in the NPPES registry as of the last update on 2021-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.