Organization Profile
Quest Diagnostics LLC
Unclaimed ProfileAbout Quest Diagnostics LLC
Quest Diagnostics LLC is an organization based in Marlborough, MA and listed in the NPI registry under clinical medical laboratory. According to Medicare claims data, the services billed most often include insertion of needle into vein for collection of blood sample, blood test, comprehensive group of blood chemicals, and complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Practice Size
Counted from individual NPI records registered at the same street address; a shared building can inflate this.
Providers in This Building & Nearby
From registry street addresses: providers filed at this building, which can include unrelated practices sharing it.
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (774) 369-3900
- Email not available
Practice Locations
200 FOREST ST 3RD FLOOR,SUITE B
Marlborough, MA 01752
Procedures Most Often Billed to Medicare
1,521,014 services · 1,010,516 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
274,170 |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
180,344 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
149,732 |
| Blood test, lipids (cholesterol and triglycerides) | Lab test | 80061 |
134,223 |
| Blood test, thyroid stimulating hormone (tsh) | Lab test | 84443 |
106,206 |
| Hemoglobin a1c level | Lab test | 83036 |
76,961 |
| Blood test, basic group of blood chemicals (calcium, total) | Lab test | 80048 |
47,681 |
| Vitamin d-3 level | Lab test | 82306 |
47,040 |
| Bacterial colony count, urine | Lab test | 87086 |
42,102 |
| Cyanocobalamin (vitamin b-12) level | Lab test | 82607 |
41,897 |
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 4
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 Marlborough 6
Same specialty, same city.
More connections — 7 related providers in 1 group
Also performs Insertion of needle into vein for collection of blood sample 7
Providers in MA 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 Marlborough, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Quest Diagnostics LLC?
Quest Diagnostics LLC is listed at 200 Forest St 3Rd Floor,Suite B, Marlborough, MA 01752. 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 (774) 369-3900. 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 1952347791. 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.
Guide.md
Is this your practice?
Manage this listing? Log in or create an account, then click “This is my practice and I manage it” here. A verified physician whose registry address matches this location is approved instantly; everyone else is reviewed by a person.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.