Clinical & Reference Laboratories in Montgomery County, MD

The top-ranked clinical laboratories serving Montgomery County, MD are Adventist Hospital-based Providers LLC, Arthritis & Rheumatism Associate PC and B&b Bio LLC. We list 80 clinical laboratories serving Montgomery County, MD. 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 Montgomery County, MD. 80 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 Montgomery County

Ranked by our published methodology. Sponsored providers are shown separately.
#ProviderVerified recordsBased inPhone
1Adventist Hospital-based Providers LLCCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D0649632
Calverton, MD(240) 471-3400
2Arthritis & Rheumatism Associate PCCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D0213364
Rockville, MD(301) 942-3126
3B&b Bio LLCCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D2251432
Gaithersburg, MD(301) 355-4779
4Bethesda Dermatopathology LabCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D0649615
Hillandale, MD(301) 439-4301
5Capital Digestive Care LaboratoryCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D1037782
Calverton, MD(240) 737-0080
6Capitol Dermatopathology LLCCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D1099518
Potomac, MD(202) 818-0968
7Cirrus Dx IncCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D2130541
Rockville, MD(240) 813-8801
8Cleardx Clinical LaboratoryCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D2259369
Gaithersburg, MD(240) 722-1633
9Clongen LaboratoriesCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D1032144
Gaithersburg, MD(301) 916-0173
10Cosmosid Ngs Laboratory Services, LLCCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#21D2161577
Germantown, MD(703) 995-9879
20 more providers serving this area

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Frequently asked questions

How many clinical laboratories serve Montgomery County?

We list 80 clinical laboratories serving Montgomery County, MD: 32 based there and 48 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 Montgomery County?

The top-ranked clinical laboratories serving Montgomery County, MD are Adventist Hospital-based Providers LLC, Arthritis & Rheumatism Associate PC, B&b Bio LLC, Bethesda Dermatopathology Lab and Capital Digestive Care Laboratory. The full ranked list, with the official records each provider matched, is on this page.

Which clinical laboratories serving Montgomery County are verified against official records?

10 of the top 10 match an active official record: Adventist Hospital-based Providers LLC (Centers for Medicare & Medicaid Services), Arthritis & Rheumatism Associate PC (Centers for Medicare & Medicaid Services), B&b Bio LLC (Centers for Medicare & Medicaid Services), Bethesda Dermatopathology Lab (Centers for Medicare & Medicaid Services) and Capital Digestive Care Laboratory (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 .

Cities in Montgomery County

Communities served

North Potomac, Redland, Takoma Park, Calverton, Damascus, Glenmont, White Oak, Colesville, Cloverly, Flower Hill, Kemp Mill, Travilah, Chevy Chase, Burtonsville, North Kensington, Leisure World, South Kensington, Four Corners, Forest Glen, Darnestown, Poolesville, Hillandale, Layhill, Ashton-Sandy Spring, Friendship Heights Village, Brookmont, Burnt Mills, Chevy Chase, Derwood, Cabin John, Kensington, Chevy Chase Village, Spencerville, Somerset, Chevy Chase View, Ten Mile Creek, Garrett Park, Martin's Additions, Chevy Chase Section Three, North Chevy Chase, Chevy Chase Section Five, Laytonsville, Washington Grove, Glen Echo, Brookeville, Barnesville