Clinical & Reference Laboratories in Freeport, NY

The top-ranked clinical laboratories serving Freeport, NY are Guardian Clinical Laboratories LLC, Gastrocare Li and Bayside Laboratories Inc. We list 81 clinical laboratories serving Freeport, NY. 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 Freeport, NY (Nassau County). 81 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 Freeport

Ranked by our published methodology. Sponsored providers are shown separately.
#ProviderVerified recordsBased inPhone
1Guardian Clinical Laboratories LLCCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D0954149
Oceanside, NY (3 mi)(631) 424-1807
2Gastrocare LiCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D2325020
Valley Stream, NY (6 mi)(516) 825-8484
3Bayside Laboratories IncCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D0149650
Uniondale, NY (6 mi)(718) 229-8800
4Dntp LaboratoryCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#31D2245011
Levittown, NY (6 mi)(347) 469-9491
5Sunstone Pathology Services PCCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D2039949
Franklin Square, NY (6 mi)(516) 354-1790
6Cross Island Diagnostic And Research LaboratoryCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D2027624
Levittown, NY (6 mi)(516) 270-7675
7Jordan SteinbergCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D2304405
Salisbury, NY (6 mi)(516) 254-5790
8Long Island Medical LaboratoryCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D0938580
Carle Place, NY (7 mi)(516) 887-0977
9North Shore Medical LabsCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D0692030
Williston Park, NY (8 mi)(516) 739-5227
10Acutis Diagnostics, IncCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#33D2087537
Hicksville, NY (9 mi)(844) 522-8847
20 more providers serving this area

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Frequently asked questions

How many clinical laboratories serve Freeport?

We list 81 clinical laboratories serving Freeport, NY: 0 based there and 81 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 Freeport?

The top-ranked clinical laboratories serving Freeport, NY are Guardian Clinical Laboratories LLC, Gastrocare Li, Bayside Laboratories Inc, Dntp Laboratory and Sunstone Pathology Services PC. The full ranked list, with the official records each provider matched, is on this page.

Which clinical laboratories serving Freeport are verified against official records?

10 of the top 10 match an active official record: Guardian Clinical Laboratories LLC (Centers for Medicare & Medicaid Services), Gastrocare Li (Centers for Medicare & Medicaid Services), Bayside Laboratories Inc (Centers for Medicare & Medicaid Services), Dntp Laboratory (Centers for Medicare & Medicaid Services) and Sunstone Pathology Services PC (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 .

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