Number of Quest Diagnostics clinics in the United States in 2025
How many Quest Diagnostics clinics are there in the United States?
There are 5,779 Quest Diagnostics clinics in the United States as of May 26, 2025. The state and territory with the most number of Quest Diagnostics locations in the US is Texas, with 700 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 5,779 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
700 (12%)
A clinic for every 41,423 people, in Texas with about 12% of the total number of Quest Diagnostics clinics
California
644 (11%)
A clinic for every 61,354 people, in California with about 11% of the total number of Quest Diagnostics clinics
Florida
471 (8%)
A clinic for every 45,601 people, in Florida with about 8% of the total number of Quest Diagnostics clinics
| State / Territory | Number of clinics | Population | Population per clinic |
|---|---|---|---|
| Texas | 700 (12%) | 29.00M | 41.42K |
| California | 644 (11%) | 39.51M | 61.35K |
| Florida | 471 (8%) | 21.48M | 45.60K |
| New York | 385 (7%) | 19.45M | 50.53K |
| Ohio | 247 (4%) | 11.69M | 47.32K |
| Pennsylvania | 231 (4%) | 12.80M | 55.42K |
| Georgia | 220 (4%) | 10.62M | 48.26K |
| New Jersey | 197 (3%) | 8.88M | 45.09K |
| Tennessee | 191 (3%) | 6.83M | 35.75K |
| Illinois | 178 (3%) | 12.67M | 71.19K |
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 | 77 |
| New York | New York | 54 |
| San Antonio | Texas | 48 |
| Brooklyn | New York | 44 |
| Jacksonville | Florida | 32 |
| Austin | Texas | 31 |
| Las Vegas | Nevada | 28 |
| Bronx | New York | 28 |
| Indianapolis | Indiana | 27 |
| Dallas | Texas | 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Mogo Urgent Care - Marina (Preferred) | 2930 2nd Ave Ste 120 | Marina | CA | 93933 | 831-622-6935 | 36.666918 | -121.8077713 | 2930 2nd Ave Ste 120, Marina, CA, 93933 | USA | 2025-05-26 |
| Quest Diagnostics - Inside San Rafael Safeway Store - Employer Drug Testing Not Offered | 950 Las Gallinas Ave | San Rafael | CA | 94903 | 415-680-1042 | 38.0084949 | -122.5482887 | 950 Las Gallinas Ave, San Rafael, CA, 94903 | USA | 2025-05-26 |
| Northern California Drug Testing Clinic (Preferred) | 2310 Homestead Rd Ste C1 | Los Altos | CA | 94024 | 650-669-6567 | 37.3366744 | -122.067397 | 2310 Homestead Rd Ste C1, Los Altos, CA, 94024 | USA | 2025-05-26 |
| Quest Diagnostics - San Dimas West Covina Boulevard - Employer Drug Testing Not Offered | 1330 W Covina Blvd Ste 205 | San Dimas | CA | 91773 | 626-201-1152 | 34.0982549 | -117.833695 | 1330 W Covina Blvd Ste 205, San Dimas, CA, 91773 | USA | 2025-05-26 |
| Staff - Worthy (Preferred) | 323 N D St | Porterville | CA | 93257 | 559-500-1124 | 36.0715694 | -119.0186012 | 323 N D St, Porterville, CA, 93257 | USA | 2025-05-26 |
| Quest Diagnostics - Oxnard Saviers | 2600 Saviers Rd | Oxnard | CA | 93033 | 805-417-7622 | 34.1758786 | -119.1773503 | 2600 Saviers Rd, Oxnard, CA, 93033 | USA | 2025-05-26 |
| Akeso Occ Health - S Santa Fe Sprgs (Preferred) | 13440 Imperial Hwy | Santa Fe Springs | CA | 90670 | 562-926-3440 | 33.916885 | -118.046021 | 13440 Imperial Hwy, Santa Fe Springs, CA, 90670 | USA | 2025-05-26 |
| Quest Diagnostics - San Pedro West 6th | 1294 W 6th St Ste 105 | San Pedro | CA | 90731 | 310-547-3662 | 33.7392172 | -118.3056004 | 1294 W 6th St Ste 105, San Pedro, CA, 90731 | USA | 2025-05-26 |
| Carbon Health - Chino Hills (Preferred) | 15840 Soquel Canyon Pkwy | Chino Hills | CA | 91709 | 909-850-4359 | 33.9645946 | -117.6927539 | 15840 Soquel Canyon Pkwy, Chino Hills, CA, 91709 | USA | 2025-05-26 |
| Fastest Labs Of Torrance (Preferred) | 18156 Crenshaw Blvd | Torrance | CA | 90504 | 424-433-5553 | 33.8661819 | -118.3259787 | 18156 Crenshaw Blvd, Torrance, CA, 90504 | USA | 2025-05-26 |
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