Number of Quest Diagnostics clinics in the United States in 2026
How many Quest Diagnostics clinics are there in the United States?
There are 6,148 Quest Diagnostics clinics in the United States as of February 24, 2026. The state and territory with the most number of Quest Diagnostics locations in the US is Texas, with 731 clinics, which is about 12% of all Quest Diagnostics clinics in the US.
How can I download a list of Quest Diagnostics clinics in the United States into Excel?
You can download the complete list of 6,148 Quest Diagnostics locations data as an Excel file, along with geo-coded addresses, phone numbers and open hours from our data store.
Download DatasetTop 10 States and Territories with the most Quest Diagnostics clinics
Texas
731 (12%)
A clinic for every 39,666 people, in Texas with about 12% of the total number of Quest Diagnostics clinics
California
599 (10%)
A clinic for every 65,963 people, in California with about 10% of the total number of Quest Diagnostics clinics
Florida
587 (10%)
A clinic for every 36,589 people, in Florida with about 10% of the total number of Quest Diagnostics clinics
| State / Territory | Number of clinics | Population | Population per clinic |
|---|---|---|---|
| Texas | 731 (12%) | 29.00M | 39.67K |
| California | 599 (10%) | 39.51M | 65.96K |
| Florida | 587 (10%) | 21.48M | 36.59K |
| New York | 381 (6%) | 19.45M | 51.06K |
| Ohio | 265 (4%) | 11.69M | 44.11K |
| Pennsylvania | 244 (4%) | 12.80M | 52.47K |
| Georgia | 238 (4%) | 10.62M | 44.61K |
| Tennessee | 226 (4%) | 6.83M | 30.22K |
| New Jersey | 192 (3%) | 8.88M | 46.26K |
| North Carolina | 190 (3%) | 10.49M | 55.20K |
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 | 70 |
| New York | New York | 52 |
| Brooklyn | New York | 44 |
| San Antonio | Texas | 42 |
| Jacksonville | Florida | 39 |
| Dallas | Texas | 37 |
| Las Vegas | Nevada | 27 |
| Orlando | Florida | 27 |
| Oklahoma City | Oklahoma | 27 |
| 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.
| Name | Street | City | State / Territory | Zip Code | Phone | Latitude | Longitude | Address | Country | Last Updated Date |
|---|---|---|---|---|---|---|---|---|---|---|
| Tarrant Medical, Pc (Preferred) | 2038 Springdale Ln | Tarrant | AL | 35217 | 205-841-7665 | 33.5881718 | -86.768153 | 2038 Springdale Ln, Tarrant, AL, 35217 | USA | 2026-02-24 |
| Working Fit (Preferred) | 1300 S Montgomery Ave | Sheffield | AL | 35660 | 256-386-4433 | 34.7464826 | -87.6989296 | 1300 S Montgomery Ave, Sheffield, AL, 35660 | USA | 2026-02-24 |
| Exam One - Questselect Members Only (Preferred) | 4620 West Commercial Drive Ste A | North Little Rock | AR | 72116 | 501-219-2505 | 34.797166 | -92.221769 | 4620 West Commercial Drive Ste A, North Little Rock, AR, 72116 | USA | 2026-02-24 |
| Any Lab Test Now - Scottsdale (Preferred) | 8989 E Vialinda Ste 111 | Scottsdale | AZ | 85258 | 480-451-0002 | 33.568349 | -111.8883065 | 8989 E Vialinda Ste 111, Scottsdale, AZ, 85258 | USA | 2026-02-24 |
| Sonora Quest Laboratories - Mesa - Crismon And Southern - Employer Drug Testing Not Offered | 10238 E Hampton Ave Ste 101 | Mesa | AZ | 85209 | 480-354-7507 | 33.391418 | -111.609281 | 10238 E Hampton Ave Ste 101, Mesa, AZ, 85209 | USA | 2026-02-24 |
| Fastest Labs Of Scottsdale (Preferred) | 7315 E Evans Rd | Scottsdale | AZ | 85260 | 480-550-7230 | 33.6157104 | -111.9236275 | 7315 E Evans Rd, Scottsdale, AZ, 85260 | USA | 2026-02-24 |
| Ross Health Care (Preferred) | 2476 S Atlantic Blvd | Commerce | CA | 90040 | 323-780-1650 | 34.0023994 | -118.168648 | 2476 S Atlantic Blvd, Commerce, CA, 90040 | USA | 2026-02-24 |
| Fastest Labs Of Stockton (Preferred) | 253 W Louise Ave | Manteca | CA | 95336 | 209-200-8056 | 37.8130327 | -121.2189395 | 253 W Louise Ave, Manteca, CA, 95336 | USA | 2026-02-24 |
| Quest Diagnostics - Advent Health Group Family Medicine - Adairsville | 21 Commerce Pkwy | Adairsville | GA | 30103 | 678-767-8252 | 34.3773121 | -84.9276464 | 21 Commerce Pkwy, Adairsville, GA, 30103 | USA | 2026-02-24 |
| Alliance Occupational Medicine - Questselect Members Only (Preferred) | 2737 Walsh Ave | Santa Clara | CA | 95051 | 408-228-8400 | 37.374513 | -121.976533 | 2737 Walsh Ave, Santa Clara, CA, 95051 | USA | 2026-02-24 |
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