Practice Profile
Unclaimed ProfileAbout Quest Diagnostics LLC
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Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (773) 736-1830
- Email not available
Practice Locations
5635 W BELMONT AVE
Chicago, IL 60634
Procedures Most Often Billed to Medicare
51 services · 41 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
19 |
| Hemoglobin a1c level | Lab test | 83036 |
32 |
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.
More connections — 8 related providers in 1 group
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is Quest Diagnostics LLC's specialty?
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
Where can I find Quest Diagnostics LLC?
Quest Diagnostics LLC is listed at 5635 W BELMONT AVE, Chicago, IL 60634. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Quest Diagnostics LLC?
The number on file is (773) 736-1830. 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 1851982623. 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 is Quest Diagnostics LLC known for?
According to Medicare billing data, Quest Diagnostics LLC performs procedures including insertion of needle into vein for collection of blood sample, alongside routine visits and testing. 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.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.