Number of Quest Diagnostics clinics in the United States in 2026

Last updated on January 30, 2026
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How many Quest Diagnostics clinics are there in the United States?

There are 6,333 Quest Diagnostics clinics in the United States as of January 30, 2026. The state and territory with the most number of Quest Diagnostics locations in the US is Texas, with 736 clinics, which is about 12% of all Quest Diagnostics clinics in the US.

6,333
Locations
52
States and Territories
2,605
Cities
Map of Quest Diagnostics clinics in the United States


How can I download a list of Quest Diagnostics clinics in the United States into Excel?

You can download the complete list of 6,333 Quest Diagnostics locations data as an Excel file, along with geo-coded addresses, phone numbers and open hours from our data store.

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Top 10 States and Territories with the most Quest Diagnostics clinics

Texas

736 (12%)

A clinic for every 39,397 people, in Texas with about 12% of the total number of Quest Diagnostics clinics


California

651 (10%)

A clinic for every 60,694 people, in California with about 10% of the total number of Quest Diagnostics clinics


Florida

595 (9%)

A clinic for every 36,097 people, in Florida with about 9% of the total number of Quest Diagnostics clinics


State / Territory Number of clinics Population Population per clinic
Texas 736 (12%) 29.00M 39.40K
California 651 (10%) 39.51M 60.69K
Florida 595 (9%) 21.48M 36.10K
New York 385 (6%) 19.45M 50.53K
Ohio 265 (4%) 11.69M 44.11K
Pennsylvania 246 (4%) 12.80M 52.04K
Georgia 244 (4%) 10.62M 43.51K
Tennessee 229 (4%) 6.83M 29.82K
North Carolina 205 (3%) 10.49M 51.16K
New Jersey 203 (3%) 8.88M 43.75K

There are Quest Diagnostics clinics in 54 states and territories in the United States

States and Territories without any Quest Diagnostics clinics

These states and territories do not have any Quest Diagnostics clinics

  • American Samoa
  • Guam
  • U.S. Virgin Islands
  • Northern Mariana Islands

There are 4 states and territories without Quest Diagnostics clinics in the United States

Cities with the most number of Quest Diagnostics clinics in the United States

City State / Territory Number of Locations
Houston Texas 71
New York New York 53
Brooklyn New York 44
San Antonio Texas 42
Jacksonville Florida 39
Dallas Texas 36
Austin Texas 30
Las Vegas Nevada 28
Orlando Florida 27
Oklahoma City Oklahoma 27

Download the complete database of Quest Diagnostics Locations in USA

You can download the full list of Quest Diagnostics locations used for this analysis from our data store. Here is a random sample of 10 records for you to look at the fields and the data that we provide.

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Name Street City State / Territory Zip Code Phone Latitude Longitude Address Country Last Updated Date
Quest Diagnostics - Inside Mesquite Tom Thumb Store - Employer Drug Testing Not Offered 1501 Pioneer Rd Mesquite TX 75149 972-288-9500 32.7460849 -96.5862029 1501 Pioneer Rd, Mesquite, TX, 75149 USA 2026-01-30
Carenow - Fairmont (Preferred) 5233 Fairmont Pkwy Ste I Pasadena TX 77505 713-568-0240 29.650669 -95.1608831 5233 Fairmont Pkwy Ste I, Pasadena, TX, 77505 USA 2026-01-30
Fast Pace - Daphne (Preferred) 9932 Spanish Fort Blvd Daphne AL 36527 251-237-8181 30.6762879 -87.8533148 9932 Spanish Fort Blvd, Daphne, AL, 36527 USA 2026-01-30
On - Site Collections, Llc (Preferred) 706 Highland Ave Selma AL 36701 334-872-7646 32.4309 -87.0298 706 Highland Ave, Selma, AL, 36701 USA 2026-01-30
Arcpoint Labs Of Mobile (Preferred) 5920 Grelot Rd Ste E3 Mobile AL 36609 251-725-0091 30.6615945 -88.1799286 5920 Grelot Rd Ste E3, Mobile, AL, 36609 USA 2026-01-30
Alabama Drug & Alcohol Testing (Preferred) 126 N Court Sq Ste 2 Ozark AL 36360 334-635-0201 31.413078 -86.0661159 126 N Court Sq Ste 2, Ozark, AL, 36360 USA 2026-01-30
Camden Premier Health Services, Llc (Preferred) 140 Darnell Ave Camden AR 71701 870-454-7113 33.5837445 -92.8365355 140 Darnell Ave, Camden, AR, 71701 USA 2026-01-30
Fast Pace - Mountain Home Ar (Preferred) 1020 Highway 62 E Mountain Home AR 72653 870-337-2171 36.3497305 -92.3692923 1020 Highway 62 E, Mountain Home, AR, 72653 USA 2026-01-30
Haute Screening - Sherwood (Preferred) 2402 Wildwood Ave Ste 152 Sherwood AR 72120 501-708-1111 34.8166901 -92.2052056 2402 Wildwood Ave Ste 152, Sherwood, AR, 72120 USA 2026-01-30
Arrowhealth Corporation (Preferred) 2716 E Tudor Rd Anchorage AK 99507 907-868-8885 61.1807766 -149.8299718 2716 E Tudor Rd, Anchorage, AK, 99507 USA 2026-01-30

* Open hours are not displayed here as it is too big to show on a reasonably sized screen.

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