Number of Quest Diagnostics clinics in the United States in 2026

Last updated on August 27, 2026
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How many Quest Diagnostics clinics are there in the United States?

There are 6,077 Quest Diagnostics clinics in the United States as of August 27, 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.

6,077
Locations
51
States and Territories
2,551
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 6,077 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

731 (12%)

A clinic for every 43,379 people, in Texas with about 12% of the total number of Quest Diagnostics clinics


California

631 (10%)

A clinic for every 62,369 people, in California with about 10% of the total number of Quest Diagnostics clinics


Florida

583 (10%)

A clinic for every 40,245 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%) 31.71M 43.38K
California 631 (10%) 39.35M 62.37K
Florida 583 (10%) 23.46M 40.24K
New York 374 (6%) 20.00M 53.48K
Ohio 263 (4%) 11.90M 45.25K
Pennsylvania 243 (4%) 13.06M 53.74K
Georgia 233 (4%) 11.30M 48.51K
Tennessee 220 (4%) 7.32M 33.25K
New Jersey 197 (3%) 9.55M 48.47K
Illinois 186 (3%) 12.72M 68.38K

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 62
New York New York 50
Brooklyn New York 44
San Antonio Texas 39
Jacksonville Florida 39
Dallas Texas 35
Oklahoma City Oklahoma 28
Orlando Florida 27
Austin Texas 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
Fastmed - Lumberton 5080 Kahn Dr Ste 120 Lumberton NC 28358 910-738-5588 34.6676866 -79.0057205 5080 Kahn Dr Ste 120, Lumberton, NC, 28358 USA 2026-08-27
Northbay Occupational Health 1679 E Monte Vista Ave Ste 104 Vacaville CA 95688 707-646-4600 38.3700674 -121.9606114 1679 E Monte Vista Ave Ste 104, Vacaville, CA, 95688 USA 2026-08-27
Fastest Labs Of Gateway Cities 3331 E Artesia Blvd Long Beach CA 90805 562-470-6219 33.8754642 -118.1528852 3331 E Artesia Blvd, Long Beach, CA, 90805 USA 2026-08-27
Arcpoint Labs Of West Los Angeles 2320 S Robertson Blvd Ste 102 Los Angeles CA 90034 310-862-4333 34.0403903 -118.3876102 2320 S Robertson Blvd Ste 102, Los Angeles, CA, 90034 USA 2026-08-27
Quest Diagnostics - Oxnard Saviers 2600 Saviers Rd Oxnard CA 93033 805-417-7615 34.1758786 -119.1773503 2600 Saviers Rd, Oxnard, CA, 93033 USA 2026-08-27
Proactive Work Los Angeles 132 S Beaudry Ave Los Angeles CA 90012 213-977-9300 34.0582159 -118.2546266 132 S Beaudry Ave, Los Angeles, CA, 90012 USA 2026-08-27
Carbon Health - Moorpark 806 New Los Angeles Ave Ste A1 Moorpark CA 93021 818-479-7837 34.278874 -118.8665098 806 New Los Angeles Ave Ste A1, Moorpark, CA, 93021 USA 2026-08-27
Proactive Work Chatsworth 9421 Winnetka Ave Chatsworth CA 91311 747-444-4090 34.2415825 -118.5722294 9421 Winnetka Ave, Chatsworth, CA, 91311 USA 2026-08-27
Hamby Chiropractic 6716 Madison Ave Ste A1 Fair Oaks CA 95628 916-966-4330 38.6627417 -121.3078278 6716 Madison Ave Ste A1, Fair Oaks, CA, 95628 USA 2026-08-27
Afc Urgent Care - High Point 2305 N Main St Ste 101 High Point NC 27262 336-884-4050 35.9850335 -80.0249569 2305 N Main St Ste 101, High Point, NC, 27262 USA 2026-08-27

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

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