Practice Profile
Unclaimed ProfileAbout Quest Diagnostics LLC
No biography has been added yet. Is this you? Claim this profile to add one.
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (312) 491-5250
- Email not available
Practice Locations
1431 N WESTERN AVE STE 406
Chicago, IL 60622
Procedures Most Often Billed to Medicare
42 services · 28 patients · 1 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Hemoglobin a1c level | Lab test | 83036 |
42 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at Quest Diagnostics LLC 7
Providers listing the same practice in the NPI registry.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other clinical medical laboratory specialists in Chicago 8
Same specialty, same city.
Common questions
What kind of practice is Quest Diagnostics LLC?
Quest Diagnostics LLC is a clinical medical laboratory in Chicago, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Clinical Medical Laboratory”.
NPI registry
What is Quest Diagnostics LLC's address?
Quest Diagnostics LLC is listed at 1431 N WESTERN AVE STE 406, Chicago, IL 60622. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Quest Diagnostics LLC?
The number on file is (312) 491-5250. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Quest Diagnostics LLC?
Quest Diagnostics LLC's National Provider Identifier is 1609460765. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What procedures does Quest Diagnostics LLC perform?
According to Medicare billing data, Quest Diagnostics LLC the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Quest Diagnostics LLC's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Quest Diagnostics LLC. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.