Number of Quest Diagnostics clinics in the United States in 2025

Last updated on June 25, 2025
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How many Quest Diagnostics clinics are there in the United States?

There are 5,789 Quest Diagnostics clinics in the United States as of June 25, 2025. The state and territory with the most number of Quest Diagnostics locations in the US is Texas, with 681 clinics, which is about 12% of all Quest Diagnostics clinics in the US.

5,789
Locations
52
States and Territories
2,472
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 5,789 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

681 (12%)

A clinic for every 42,579 people, in Texas with about 12% of the total number of Quest Diagnostics clinics


California

629 (11%)

A clinic for every 62,817 people, in California with about 11% of the total number of Quest Diagnostics clinics


Florida

478 (8%)

A clinic for every 44,933 people, in Florida with about 8% of the total number of Quest Diagnostics clinics


State / Territory Number of clinics Population Population per clinic
Texas 681 (12%) 29.00M 42.58K
California 629 (11%) 39.51M 62.82K
Florida 478 (8%) 21.48M 44.93K
New York 383 (7%) 19.45M 50.79K
Ohio 248 (4%) 11.69M 47.13K
Pennsylvania 236 (4%) 12.80M 54.25K
Georgia 212 (4%) 10.62M 50.08K
New Jersey 201 (3%) 8.88M 44.19K
Tennessee 188 (3%) 6.83M 36.32K
Illinois 180 (3%) 12.67M 70.40K

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

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

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 67
New York New York 54
San Antonio Texas 48
Brooklyn New York 44
Jacksonville Florida 34
Austin Texas 31
Las Vegas Nevada 28
Orlando Florida 28
Dallas Texas 28
Bronx New York 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
Innovative Risk Management Services (Preferred) 2714 Canal St Ste 102 New Orleans LA 70119 504-309-2104 29.9655776 -90.0881471 2714 Canal St Ste 102, New Orleans, LA, 70119 USA 2025-06-25
Opelousas General Health System (Preferred) 539 E Prudhomme St Opelousas LA 70570 337-594-3835 30.5447326 -92.0752527 539 E Prudhomme St, Opelousas, LA, 70570 USA 2025-06-25
Patient Centered Diagnostics, Llc (Preferred) 1425 Lynn St Thibodaux LA 70301 985-227-9707 29.7837014 -90.8277076 1425 Lynn St, Thibodaux, LA, 70301 USA 2025-06-25
Quest Diagnostics - Mandeville 4244 Highway 22 Ste 7 Mandeville LA 70471 985-727-0004 30.3951344 -90.0957231 4244 Highway 22 Ste 7, Mandeville, LA, 70471 USA 2025-06-25
Gulf Coast Occ Med - Addis (Preferred) 7640 La Highway 1 S Addis LA 70710 225-282-3278 30.358118 -91.261783 7640 La Highway 1 S, Addis, LA, 70710 USA 2025-06-25
Fast Pace - Carlyss La (Preferred) 3439 Highway 1256 Sulphur LA 70665 337-607-0037 30.2365943 -93.3773783 3439 Highway 1256, Sulphur, LA, 70665 USA 2025-06-25
Carlock Family Medical Clinic - Otis (Preferred) 2778 Highway 121 Otis LA 71466 318-793-5020 31.203559 -92.733558 2778 Highway 121, Otis, LA, 71466 USA 2025-06-25
Fast Pace - Kaplan La (Preferred) 213 W Veterans Meml Dr Kaplan LA 70548 337-282-1096 29.9985492 -92.287152 213 W Veterans Meml Dr, Kaplan, LA, 70548 USA 2025-06-25
Carbon Health - West Roxbury (Preferred) 75 Spring St Ste 500 West Roxbury MA 02132 508-283-9771 42.2787501 -71.1633254 75 Spring St Ste 500, West Roxbury, MA, 02132 USA 2025-06-25
Healthremede (Preferred) 3235 Perkins Rd Baton Rouge LA 70808 225-387-3030 30.422935 -91.156029 3235 Perkins Rd, Baton Rouge, LA, 70808 USA 2025-06-25

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

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