Number of Quest Diagnostics clinics in the United States in 2026

Last updated on September 25, 2026
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How many Quest Diagnostics clinics are there in the United States?

There are 6,100 Quest Diagnostics clinics in the United States as of September 25, 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.

6,100
Locations
51
States and Territories
2,552
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 6,100 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 43,084 people, in Texas with about 12% of the total number of Quest Diagnostics clinics


California

630 (10%)

A clinic for every 62,468 people, in California with about 10% of the total number of Quest Diagnostics clinics


Florida

589 (10%)

A clinic for every 39,835 people, in Florida with about 10% of the total number of Quest Diagnostics clinics


State / Territory Number of clinics Population Population per clinic
Texas 736 (12%) 31.71M 43.08K
California 630 (10%) 39.35M 62.47K
Florida 589 (10%) 23.46M 39.84K
New York 374 (6%) 20.00M 53.48K
Ohio 264 (4%) 11.90M 45.08K
Pennsylvania 243 (4%) 13.06M 53.74K
Georgia 232 (4%) 11.30M 48.72K
Tennessee 221 (4%) 7.32M 33.10K
New Jersey 197 (3%) 9.55M 48.47K
Illinois 189 (3%) 12.72M 67.30K

There are Quest Diagnostics clinics in 53 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

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

There are 5 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 64
New York New York 50
Brooklyn New York 44
San Antonio Texas 40
Jacksonville Florida 39
Dallas Texas 35
Oklahoma City Oklahoma 28
Austin Texas 27
Orlando Florida 27
Las Vegas Nevada 26

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
Keystone Industrial Medicine 1950 S Sunwest Ln Ste 108 San Bernardino CA 92408 909-521-8818 34.0650983 -117.2909525 1950 S Sunwest Ln Ste 108, San Bernardino, CA, 92408 USA 2026-09-25
Occupational Healthworx, Llc 6825 Jimmy Carter Blvd Ste 1100 Norcross GA 30071 404-855-3300 33.9401735 -84.2361689 6825 Jimmy Carter Blvd Ste 1100, Norcross, GA, 30071 USA 2026-09-25
Checkpoint Otc 24326 Mission Blvd Ste 3 Hayward CA 94544 510-733-5707 37.6645774 -122.0767776 24326 Mission Blvd Ste 3, Hayward, CA, 94544 USA 2026-09-25
Quest Diagnostics - Coalinga 155 S 5th St 155 S 5th St Coalinga CA 93210 559-934-1531 36.1389178 -120.35813508 155 S 5th St, Coalinga, CA, 93210 USA 2026-09-25
No Drugs Inc - San Jose 3162 Newberry Dr Ste 60 San Jose CA 95118 800-490-3784 37.2739083 -121.8803646 3162 Newberry Dr Ste 60, San Jose, CA, 95118 USA 2026-09-25
Drug Screen Solutions 220 W Brandon Blvd Ste 209 Brandon FL 33511 813-662-2182 27.9382 -82.288111 220 W Brandon Blvd Ste 209, Brandon, FL, 33511 USA 2026-09-25
Quest Diagnostics - Sarasota Midtown 1217 S East Ave Ste 103 Sarasota FL 34239 941-413-3005 27.3218285 -82.5269099 1217 S East Ave Ste 103, Sarasota, FL, 34239 USA 2026-09-25
MD Now G - West Flagler 9971 W Flagler St Miami FL 33174 305-222-8335 25.7694744 -80.3578139 9971 W Flagler St, Miami, FL, 33174 USA 2026-09-25
Onsite Collections Only 3920 Arkwright Rd Ste 145 Macon GA 31210 478-405-7300 32.9063557 -83.6881087 3920 Arkwright Rd Ste 145, Macon, GA, 31210 USA 2026-09-25
Css Healthcare - Compliance & Screening Services Llc 525 W Faulkner St El Dorado AR 71730 903-232-7144 33.2144414 -92.6715981 525 W Faulkner St, El Dorado, AR, 71730 USA 2026-09-25

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

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