#1Gary A Letts, Md, LLC
Based in Norwalk, CT
Clinical & Reference Laboratories in Norwalk, CT
The top-ranked clinical laboratories serving Norwalk, CT are Gary A Letts, Md, LLC, Quest Diagnostics LLC and Rejuvenating Fertility Center. We list 77 clinical laboratories serving Norwalk, CT. 30 of the providers shown match an active record from Centers for Medicare & Medicaid Services, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Clinical & Reference Laboratories serving Norwalk, CT (Western Connecticut Planning Region). 77 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked clinical laboratories for Norwalk
#2Quest Diagnostics LLC
Based in Norwalk, CT#3Rejuvenating Fertility Center
Serves this area from Westport, CT (5 mi)#4Laboratory Corporation Of America Holdings
Serves this area from Stamford, CT (7 mi)#5Quest Diagnostics LLC
Serves this area from Stamford, CT (7 mi)#6Gh Bendheim Laboratory
Serves this area from Greenwich, CT (12 mi)#7Laboratory Corporation Of America Holdings
Serves this area from Greenwich, CT (12 mi)#8Quest Diagnostics LLC
Serves this area from Bridgeport, CT (14 mi)#9Chestatee Pathology Associates PC
Serves this area from Port Chester, NY (14 mi)#10Focus Pathology Medical Laboratory, PLLC
Serves this area from Port Chester, NY (14 mi)
20 more providers serving this area
- Quest Diagnostics LLC, Stratford, CT (15 mi)
- Cbl Path Inc, Rye Brook, NY (15 mi)
- Ameripath New York LLC DBA Dermpath Diagnostics, White Plains, NY (17 mi)
- Quest Diagnostics, Mount Kisco, NY (17 mi)
- Progressive Diagnostics, LLC, Trumbull, CT (17 mi)
- Cairo Diagnostics, White Plains, NY (18 mi)
- Precise Diagnostics Inc, East Norwich, NY (18 mi)
- Ameripath New York, LLC, Shelton, CT (19 mi)
- Cshl Clinical Laboratory, Woodbury, NY (19 mi)
- Cytogenx Corp, Stony Brook, NY (19 mi)
- Advanced Genetics Lab, Monroe, CT (19 mi)
- New Island Medical Practice PC, Upper Brookville, NY (20 mi)
- Stony Brook Pathologists Ufpc Laboratory, Stony Brook University, NY (20 mi)
- Laboratory Of Dermatopathology Adx LLC, Woodbury, NY (20 mi)
- Mcclain Laboratories LLC, Smithtown, NY (20 mi)
- Applied Dna Clinical Labs, LLC, Stony Brook University, NY (21 mi)
- Clarapath, NY
- Dianon Systems Inc, Shelton, CT (21 mi)
- Esoterix Genetic Laboratories, LLC, Shelton, CT (21 mi)
- Acupath Laboratories Inc, Plainview, NY (21 mi)
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Frequently asked questions
How many clinical laboratories serve Norwalk?
We list 77 clinical laboratories serving Norwalk, CT: 2 based there and 75 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which clinical laboratories serve Norwalk?
The top-ranked clinical laboratories serving Norwalk, CT are Gary A Letts, Md, LLC, Quest Diagnostics LLC, Rejuvenating Fertility Center, Laboratory Corporation Of America Holdings and Quest Diagnostics LLC. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Norwalk are verified against official records?
10 of the top 10 match an active official record: Gary A Letts, Md, LLC (Centers for Medicare & Medicaid Services), Quest Diagnostics LLC (Centers for Medicare & Medicaid Services), Rejuvenating Fertility Center (Centers for Medicare & Medicaid Services), Laboratory Corporation Of America Holdings (Centers for Medicare & Medicaid Services) and Quest Diagnostics LLC (Centers for Medicare & Medicaid Services), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What does CLIA certification mean?
CLIA certificates are issued under federal law for laboratories testing human specimens. A certificate of compliance or accreditation covers moderate and high complexity testing; a certificate of waiver covers only simple waived tests.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .