CLIA lookup
CLIA Labs in Maryland
Every lab with an active CLIA certificate in Maryland, by city.
5,088 labs in Maryland hold an active CLIA certificate in the CMS file posted October 16, 2026.
4,038 of them hold a Certificate of Waiver.
Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page
License: a US government work, in the public domain (Public Domain Mark 1.0).
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Certificates in Maryland
- Certificate of Waiver
- 4,038
- Certificate for Provider-Performed Microscopy Procedures
- 514
- Certificate of Compliance
- 268
- Certificate of Accreditation
- 233
- Certificate of Registration
- 35
Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page
By city
- Baltimore681 active labs
- Rockville231 active labs
- Frederick197 active labs
- Silver Spring175 active labs
- Columbia147 active labs
- Annapolis138 active labs
- Hagerstown136 active labs
- Bethesda114 active labs
- Glen Burnie112 active labs
- Gaithersburg111 active labs
- Salisbury108 active labs
- Towson104 active labs
- Bel Air81 active labs
- Westminster81 active labs
- Bowie79 active labs
- Laurel77 active labs
- Germantown76 active labs
- Elkton65 active labs
- Waldorf63 active labs
- Greenbelt61 active labs
- Owings Mills60 active labs
- Cumberland58 active labs
- Easton57 active labs
- Lutherville55 active labs
- Chevy Chase54 active labs
- Ellicott City49 active labs
- Catonsville46 active labs
- Lanham44 active labs
- Hyattsville42 active labs
- Pasadena41 active labs
- Oxon Hill39 active labs
- Olney36 active labs
- Prince Frederick36 active labs
- Cambridge31 active labs
- Largo31 active labs
- Clinton30 active labs
- Pikesville30 active labs
- Berlin28 active labs
- Timonium28 active labs
- Chestertown27 active labs
- Leonardtown27 active labs
- Severna Park26 active labs
- Nottingham25 active labs
- Odenton25 active labs
- Rosedale25 active labs
- Dundalk24 active labs
- Oakland24 active labs
- Upper Marlboro24 active labs
- Eldersburg23 active labs
- Elkridge23 active labs
- Havre De Grace23 active labs
- La Plata23 active labs
- Fort Washington22 active labs
- Wheaton21 active labs
- Randallstown20 active labs
- Aberdeen19 active labs
- White Plains19 active labs
- Cockeysville18 active labs
- Edgewater18 active labs
- Gambrills18 active labs
- Hanover18 active labs
- Mount Airy18 active labs
- Potomac18 active labs
- Windsor Mill18 active labs
- Beltsville17 active labs
- Crofton17 active labs
- Parkville17 active labs
- Reisterstown17 active labs
- Arnold16 active labs
- Forest Hill16 active labs
- Takoma Park15 active labs
- California14 active labs
- Capitol Heights14 active labs
- Hunt Valley14 active labs
- Brandywine13 active labs
- Denton13 active labs
- Dunkirk13 active labs
- Kensington13 active labs
- Laplata13 active labs
- Centreville12 active labs
- College Park12 active labs
- Fulton12 active labs
- Abingdon11 active labs
- Camp Springs11 active labs
- Glenn Dale11 active labs
- Linthicum11 active labs
- Millersville11 active labs
- Sykesville11 active labs
- Charlotte Hall10 active labs
- Chester10 active labs
- Crownsville10 active labs
- Hampstead10 active labs
- Princess Anne10 active labs
- Riverdale10 active labs
- Clarksville9 active labs
- Lexington Park9 active labs
- North Bethesda9 active labs
- Temple Hills9 active labs
- Edgewood8 active labs
- Essex8 active labs
- Frostburg8 active labs
- Landover8 active labs
- Mitchellville8 active labs
- Ocean City8 active labs
- Snow Hill8 active labs
- Taneytown8 active labs
- White Marsh8 active labs
- Damascus7 active labs
- District Heights7 active labs
- Huntingtown7 active labs
- Ijamsville7 active labs
- Joppa7 active labs
- Marriottsville7 active labs
- Montgomery Village7 active labs
- North East7 active labs
- Pocomoke City7 active labs
- Queenstown7 active labs
- Sandy Spring7 active labs
- Severn7 active labs
- Solomons7 active labs
- Suitland7 active labs
- Brooklyn6 active labs
- Cheverly6 active labs
- Clarksburg6 active labs
- Crisfield6 active labs
- Jessup6 active labs
- Lavale6 active labs
- Stevensville6 active labs
- Walkersville6 active labs
- Williamsport6 active labs
- Boonsboro5 active labs
- Burtonsville5 active labs
- Halethorpe5 active labs
- Lusby5 active labs
- Middle River5 active labs
- Port Deposit5 active labs
- Adelphi4 active labs
- Belcamp4 active labs
- Berwyn Heights4 active labs
- Brooklyn Park4 active labs
- Emmitsburg4 active labs
- Fallston4 active labs
- Finksburg4 active labs
- Forestville4 active labs
- Hancock4 active labs
- Linthicum Heights4 active labs
- Lutherville Timonium4 active labs
- Mechanicsville4 active labs
- Perryville4 active labs
- Phoenix4 active labs
- Rising Sun4 active labs
- Bladensburg3 active labs
- Colmar Manor3 active labs
- Grantsville3 active labs
- Hollywood3 active labs
- Hughesville3 active labs
- Landover Hills3 active labs
- Lonaconing3 active labs
- Manchester3 active labs
- Myersville3 active labs
- New Carrollton3 active labs
- New Market3 active labs
- North Potomac3 active labs
- Owings3 active labs
- Parkton3 active labs
- Perry Hall3 active labs
- Seat Pleasant3 active labs
- Smithsburg3 active labs
- Thurmont3 active labs
- Urbana3 active labs
- Woodlawn3 active labs
- Accident2 active labs
- Accokeek2 active labs
- Adamstown2 active labs
- Brunswick2 active labs
- Buckeystown2 active labs
- Cascade2 active labs
- Clear Spring2 active labs
- Davidsonville2 active labs
- Dayton2 active labs
- Federalsburg2 active labs
- Gwynn Oak2 active labs
- Hurlock2 active labs
- Jarrettsville2 active labs
- Mc Henry2 active labs
- Nanjemoy2 active labs
- Northeast2 active labs
- Ocean Pines2 active labs
- Poolesville2 active labs
- Sparks2 active labs
- Sparks Glencoe2 active labs
- Westernport2 active labs
- Westover2 active labs
- Worton2 active labs
- Annapolis Junction1 active lab
- Arbutus1 active lab
- Ashton1 active lab
- Aspen Hill1 active lab
- Braddock Heights1 active lab
- Brookeville1 active lab
- Bryans Road1 active lab
- Bushwood1 active lab
- Callaway1 active lab
- Cecilton1 active lab
- Chesapeake Beach1 active lab
- Chesapeake City1 active lab
- Churchton1 active lab
- Colesville1 active lab
- Colora1 active lab
- Conowingo1 active lab
- Cottage City1 active lab
- Dares Beach1 active lab
- Darnestown1 active lab
- Delmar1 active lab
- Derwood1 active lab
- Drayden1 active lab
- Earleville1 active lab
- East New Market1 active lab
- Ellicott1 active lab
- Ewell1 active lab
- Fairmont Heights1 active lab
- Fort Detrick1 active lab
- Fort Meade1 active lab
- Friendsville1 active lab
- Fruitland1 active lab
- Funkstown1 active lab
- Galena1 active lab
- Glen Arm1 active lab
- Glenburnie1 active lab
- Glenwood1 active lab
- Grasonville1 active lab
- Greensboro1 active lab
- Harmans1 active lab
- Highland1 active lab
- Indian Head1 active lab
- Jefferson1 active lab
- Keedysville1 active lab
- Keymar1 active lab
- Kitzmiller1 active lab
- Lothian1 active lab
- Marlow Heights1 active lab
- Middletown1 active lab
- Monrovia1 active lab
- Mount Rainier1 active lab
- Mt Rainier1 active lab
- Newark1 active lab
- North Beach1 active lab
- Parsonsburg1 active lab
- Perry Point1 active lab
- Point Of Rocks1 active lab
- Preston1 active lab
- Rawlings1 active lab
- Riva1 active lab
- Sabillasville1 active lab
- Sharpsburg1 active lab
- St Marys1 active lab
- Stevenson1 active lab
- Union Bridge1 active lab
- University Park1 active lab
- West Hyattsville1 active lab
- West River1 active lab
- White Hall1 active lab
- Willards1 active lab
- Woodsboro1 active lab
Related
Questions
How many CLIA labs are in Maryland?
5,088 labs in Maryland hold an active CLIA certificate in the CMS file posted October 16, 2026.
How many Maryland labs have a Certificate of Waiver?
4,038 of the 5,088 active labs in Maryland hold a Certificate of Waiver.
What does a CLIA number look like?
Ten characters: two digits, the letter D, then seven digits (for example 45D2100035). CMS assigns one to each laboratory certificate under the Clinical Laboratory Improvement Amendments.