Every certified lab of Quest Diagnostics (stock: DGX) with its yearly tests. Official US government data, as of April 2026.
Certified labs
265
40 states
Tests a year
682.5M
Reported by inspected labs
Labs over 1 million tests
27
196 inspected labs
Medicare lab payments, 2024
$470.6M
36.9M tests
Quest Diagnostics has 265 labs with an active federal lab certificate in 40 states (as of April 2026). 196 of them run more than simple tests and are inspected; 27 report over 1 million tests a year. By type: independent lab (226), other (21), physician office (6), hospital (5).
The states with the most Quest Diagnostics labs are Connecticut (36), Florida (25), Texas (22), Indiana (21), Massachusetts (19).
Its inspected labs report 682.5M tests a year in total. The largest is Quest Diagnostics in West Hills, CA with 105.6M tests a year.
Original Medicare paid $470.6M for 36.9M lab tests billed by the 128 provider numbers (NPIs) linked to its labs in 2024. This is a lower bound, because not every lab links to an NPI.
Sorted by yearly tests
| Lab | Type | Tests a year | Accredited by |
|---|---|---|---|
| Quest Diagnostics 8401 Fallbrook Ave, West Hills, CA | Independent lab | 105.6M | CAP |
| Quest Diagnostics Clinical Laboratories Inc 4225 East Fowler Ave, Tampa, FL | Independent lab | 100.7M | CAP |
| Quest Diagnostics Clinical Laboratories Inc 10200 Commerce Pkwy, Miramar, FL | Independent lab | 93.2M | CAP |
| Quest Diagnostics LLC (Il) 1355 Mittel Blvd, Wood Dale, IL | Independent lab |
| 60.0M |
| CAP |
| Quest Diagnostics Incorporated 1 Insights Drive, Clifton, NJ | Independent lab | 36.3M | CAP |
| Quest Diagnostics Clinical Lab Inc 1777 Montreal Circle, Tucker, GA | Independent lab | 31.9M | CAP |
| Quest Diagnostics 1737 Airport Way S, Suite 200, Seattle, WA | Independent lab | 27.1M | CAP |
| Quest Diagnostics Clinical Labs Inc 400 Egypt Road, Norristown, PA | Independent lab | 24.0M | CAP |
| Quest Diagnostics 695 S Broadway, Denver, CO | Independent lab | 19.8M | CAP |
| Quest Diagnostics - Greensboro 4380 Federal Drive, Suite 100, Greensboro, NC | Independent lab | 19.5M | CAP |
| Quest Diagnostics Inc 2369 Bering Dr, San Jose, CA | Independent lab | 19.4M | CAP |
| Quest Diagnostics, LLC 200 Forest Street, Marlborough, MA | Independent lab | 16.6M | CAP |
| Quest Diagnostics, Incorporated 4230 Burnham Ave, Las Vegas, NV | Independent lab | 15.7M | CAP |
| Quest Diagnostics Inc 1715 Twin Springs Rd, Baltimore, MD | Independent lab | 14.4M | CAP |
| Quest Diagnostics Nichols Institute, Inc 14225 Newbrook Drive, Chantilly, VA | Independent lab | 12.9M | CAP |
| Quest Diagnostics Nichols Institute 33608 Ortega Highway, San Juan Capistrano, CA | Independent lab | 12.5M | CAP |
| Quest Diagnostics 50 Replublic Road, Melville, NY | Independent lab | 11.9M | - |
| Quest Diagnostics Venture LLC 875 Greentree Road, Four Parkway Center, Pittsburgh, PA | Independent lab | 11.9M | CAP |
| Quest Diagnostics of Pennsylvania Inc 875 Greentree Road 4 Parkway Center, Pittsburgh, PA | Independent lab | 10.4M | CAP |
| Quest Diagnostics 8407 Fallbrook Ave Suite #100, West Hills, CA | Independent lab | 8.8M | CAP |
| Quest Diagnostics Incorporated 4228 Houma Blvd, Suite #125, Metairie, LA | Independent lab | 3.2M | CAP |
| Quest Diagnostics Ma LLC 200 Forest St 3rd Floor, Marlborough, MA | Independent lab | 2.9M | CAP |
| Quest Diagnostics- Carilion Roanoke Memorial 1906 Belleview Avenue, Roanoke, VA | Independent lab | 2.2M | CAP |
| Quest Diagnostics - Springfield Rrl 3231 S National Ave, Basement, Springfield, MO | Independent lab | 2.0M | - |
| Quest Diagnostics - Oklahoma City Rrl 4200 W Memorial Rd, Ste 110, Oklahoma City, OK | Independent lab | 1.3M | - |
| Quest Diagnostics, LLC 3 Sterling Drive, Wallingford, CT | Independent lab | 1.3M | - |
| Quest Diagnostics LLC (Il) 506 E State Parkway, Schaumburg, IL | Independent lab | 1.3M | CAP |
| Quest Diagnostics - Joplin Rrl 4830 E 32nd St, Suite 7, Joplin, MO | Independent lab | 806K | - |
| Quest Diagnostics 3489 W 2100 S Suite 200, West Valley City, UT | Independent lab | 800K | CAP |
| Ameripath Indianapolis, PC 3495 Hacks Cross Rd, Memphis, TN | Independent lab | 696K | CAP |
| Quest Diagnostics Flint Rrl 4100 Pier North Blvd Suite D, Flint, MI | Independent lab | 615K | - |
| Ameripath Florida Inc 895 SW 30th Ave Ste 101, Pompano Beach, FL | Independent lab | 516K | CAP |
| Quest Diagnostics - Milwaukee Rrl 4852 S 6th St, Milwaukee, WI | Independent lab | 479K | - |
| Quest Diagnostics 8403 Fallbrook Ave, West Hills, CA | Independent lab | 425K | CAP |
| Quest Diagnostics 607 E Sonterra #306, San Antonio, TX | Independent lab | 425K | CAP |
| Quest Diagnostics Massachusetts LLC 1 Pearl Street, Brockton, MA | Independent lab | 415K | - |
| Quest Diagnostics Incorporated (de) 1651 3rd Ave, New York, NY | Independent lab | 413K | - |
| Quest Diagnostics Clinical Laboratories 787 37th St Ste E230, Vero Beach, FL | Independent lab | 397K | COLA |
| Quest Diagnostics Mary Bird Perkins Cancer Center 1203 S Tyler Street, Suite #110, Covington, LA | Other | 391K | - |
| Quest Diagnostics 11636 Administration Drive, Saint Louis, MO | Independent lab | 383K | CAP |
| Quest Diagnostics - Rocky Mount Family 804 English Road Suite 200, Rocky Mount, NC | Independent lab | 378K | COLA |
| Quest Diagnostics Clear Lake Rrl 600 Kobayashi Dr, Suite 109b, Webster, TX | Other | 374K | - |
| Quest Diagnostics - Columbia Rrl 2475 Broadway Bluffs, Suite 120, Columbia, MO | Independent lab | 361K | - |
| Quest Diagnostics 5220 NE 122nd Ave, Portland, OR | Independent lab | 350K | CAP |
| Quest Diagnostics LLC 555 Lordship Blvd, Stratford, CT | Independent lab | 341K | - |
| Ameripath Colorado Pathology Consultants 695 South Broadway, Suite 100, Denver, CO | Independent lab | 315K | CAP |
| Quest Diagnostics Esoteric Massachusetts, Inc Dba 200 Forest Street 2nd Floor, Marlborough, MA | Independent lab | 302K | CAP |
| Quest Diagnostics Central Laboratory 5601 Office Boulevard Northeast, Albuquerque, NM | Independent lab | 298K | CAP |
| Ameripath Texas, Inc 2501 S State Hwy 121 Suite 1210, Lewisville, TX | Independent lab | 298K | CAP |
| Ameripath Cincinnati Inc Dba Richfield 6700 Steger Drive, Cincinnati, OH | Independent lab | 282K | CAP |
| Quest Diagnostics 388 Ben Bolt Ave, Tazewell, VA | Independent lab | 260K | CAP |
| Ameripath Florida LLC 745 Orienta Avenue Ste 1201, Altamonte Springs, FL | Independent lab | 256K | CAP |
| Ameripath New York LLC Dba Dermpath Diagnostics 1133 Westchester Ave, Ste 331, White Plains, NY | Independent lab | 255K | - |
| Quest Diagnostics-Carilion Giles Community 159 Hartley Way, Pearisburg, VA | Independent lab | 234K | CAP |
| Quest Diagnostics Massachusetts LLC 366 Shrewsbury St, Worcester, MA | Independent lab | 233K | - |
| Ameripath Florida LLC D/B/A 10500 University Center Dr Ste 200, Tampa, FL | Independent lab | 227K | CAP |
| Ameripath Florida LLC 4225 E Fowler Ave, Ste B, Tampa, FL | Independent lab | 224K | CAP |
| Quest Diagnostics 2423 Sand Lake Rd Suite B, Orlando, FL | Independent lab | 200K | CAP |
| Quest Diagnostics Massachusetts LLC 531 Faunce Corner Rd, North Dartmouth, MA | Physician office | 191K | - |
| Quest Diagnostics- Carilion New River Valley 2900 Lamb Circle, Christiansburg, VA | Independent lab | 180K | CAP |
| Quest Diagnostics - Cadillac 520 Cobbs Street, Cadillac, MI | Independent lab | 176K | - |
| Quest Diagnostics Clinical Laboratories, Inc 105 West Stone Drive Suite 1h, Kingsport, TN | Independent lab | 174K | COLA |
| Ameripath Florida LLC 14055 Riveredge Drive Ste 300, Tampa, FL | Independent lab | 156K | CAP |
| Ameripath Indiana 2560 N Shadeland Ave Ste A, Indianapolis, IN | Independent lab | 150K | CAP |
| Quest Diagnostics Clinical Laboratories Inc 8890 Salrose Lane Unit 106, Fort Myers, FL | Independent lab | 145K | CAP |
| Quest Diagnostics - Fairfield Community Health 1007 W Main St, Fairfield, IL | Independent lab | 144K | - |
| Ameripath Cleveland 2451 Edison Blvd Suite A, Twinsburg, OH | Independent lab | 143K | CAP |
| Quest Diagnostics of Pennsylvania Inc 1 Sylvan Parkway, W Amherst, NY | Independent lab | 122K | - |
| Quest Diagnostics LLC 1 Cumberland Pl, Bangor, ME | Independent lab | 103K | - |
| Quest Diagnostics Vancouver Crl 505 NE 87th Ave Ste 350, Vancouver, WA | Independent lab | 100K | - |
| Quest Diagnostics - Fort Smith Rrl 6801 Rogers Ave, 1st Floor Lab, Fort Smith, AR | Independent lab | 100K | - |
| Ameripath New York, LLC 1 Insights Drive, Clifton, NJ | Independent lab | 99K | CAP |
| Quest Diagnostics- Carilion Rockbridge 1 Health Circle, Lexington, VA | Independent lab | 94K | CAP |
| Ameripath Kentucky Inc 2620 Wilhite Drive, Suite 213, Lexington, KY | Independent lab | 90K | CAP |
| Quest Diagnostics-Minnesota Community Care Rrl 895 East 7th Street, Saint Paul, MN | Independent lab | 87K | - |
| Quest Diagnostics 2204 W Nob Hill Blvd Ste F, Yakima, WA | Independent lab | 86K | - |
| Quest Diagnostics - Rogers Rrl 2708 S Rife Medical Lane, Suite T30, Rogers, AR | Independent lab | 79K | - |
| Quest Diagnostics Massachusetts LLC 1400 Worcester Street, Natick, MA | Independent lab | 77K | - |
| Quest Diagnostics Massachusetts LLC 5 Neponset Street, Suite 1581, Worcester, MA | Independent lab | 76K | - |
| Quest Diagnostics - Carilion Franklin Memorial 180 Floyd Avenue SW, Rocky Mount, VA | Independent lab | 74K | CAP |
| Quest Diagnostics Hospital for Special Care, New Britain, CT | Independent lab | 74K | CAP |
| Quest Diagnostics - Carilion Roanoke Community 101 Elm Avenue, SE - 4th Floor, Roanoke, VA | Independent lab | 70K | CAP |
| Quest Diagnostics 2999 Regent St, Ste 101, Berkeley, CA | Independent lab | 65K | - |
| Quest Diagnostics Massachusetts LLC 10 Gove St, Boston, MA | Independent lab | 61K | CAP |
| Quest Diagnostics Austin Rrl 2170 Woodward St, Suite 100, Austin, TX | Other | 57K | CAP |
| Quest Diagnostics 4120 Laurel Street, Anchorage, AK | Independent lab | 55K | - |
| Quest Diagnostics Clinical Laboratories, Inc 2560 North Shadeland Ave, Indianapolis, IN | Other | 50K | CAP |
| Ameripath Cincinnati, Inc Dba Richfield 16 Schoolhouse Ln, Cincinnati, OH | Independent lab | 39K | - |
| Quest Diagnostics of Pennsylvania Inc 835 Southwestern Run Road, Poland, OH | Independent lab | 38K | - |
| Quest Diagnostics - Midtown Psc - 1918 Randolph Road, Suite 140, Charlotte, NC | Independent lab | 33K | COLA |
| Quest Diagnostics of Pennsylvania Inc 700 Howland Wilson Rd, SE, Warren, OH | Independent lab | 33K | - |
| Quest Diagnostics Inc 11740 W Broad St, Suite B104, Henrico, VA | Independent lab | 30K | - |
| Quest Diagnostics Inc - Dearborn Rrl 3133 S Telegraph Road, Dearborn, MI | Independent lab | 27K | - |
| Quest Diagnostics - Mercy Hosp Flow Lab 1235 E Cherokee, 2nd Floor, Room# G-2186, Springfield, MO | Independent lab | 26K | - |
| Ameripath Lubbock 501A Corporation at CMC Campus 3615 19th Street, Lubbock, TX | Other | 26K | CAP |
| Quest Diagnostics-Riverside 1 1 Riverside Circle, Suite 105, Roanoke, VA | Independent lab | 25K | CAP |
| Quest Diagnostics Clinical Laboratories, Inc 501 19th St, Suite 301, Knoxville, TN | Independent lab | 23K | CAP |
| Ameripath Florida LLC 132 Dundee Place, St Johns, FL | Independent lab | 23K | - |
| Missouri Cancer Associates Rrl- 1705 E Broadway, Suite 100, Columbia, MO | Independent lab | 23K | CAP |
| Quest Diagnostics Massachusetts LLC 535 Faunce Corner Road, North Dartmouth, MA | Independent lab | 21K | - |
| Quest Diagnostics of Pennsylvania 200 Gateway Park Drive Bldg A, North Syracuse, NY | Independent lab | 19K | - |
| Ameripath Ind/St Vincent Anderson Reg Hosp Lab 2015 Jackson St, Anderson, IN | Independent lab | 16K | CAP |
| Ameripath/Colorado Pathology Consultants 1375 E 19th Ave, Denver, CO | Independent lab | 15K | - |
| Quest Diagnostics - Morrisville Stat 2200 Gateway Centre Suite 209, Morrisville, NC | Independent lab | 15K | COLA |
| Quest Diagnostics 200 Hawthorne Ave SE Ste D440, Salem, OR | Independent lab | 15K | - |
| Quest Diagnostics - Roseburg 2410 NW Edenbower Blvd Ste 177, Roseburg, OR | Independent lab | 14K | - |
| Quest Diagnostics Spokane Rrl 601 W 5th Ave Ste 304, Spokane, WA | Independent lab | 12K | - |
| Ameripath Tucson Inc 10714 E Kinetic Dr, Mesa, AZ | Independent lab | 12K | - |
| Quest Diagnostics Nampa Rrl 215 E Hawaii Ave Ste B-100, Nampa, ID | Independent lab | 12K | - |
| Ameripath Tucson Inc 4488 N Hacienda del Sol Rd, Tucson, AZ | Independent lab | 12K | - |
| Ameripath Florida LLC 2423 Sand Lake Rd Suite A, Orlando, FL | Independent lab | 11K | CAP |
| Quest Diagnostics - Wilmington 2032 South 17th Street Suite 103, Wilmington, NC | Other | 9,373 | - |
| Quest Diagnostics Oncology Consultants 7121 South Padre Island Drive, Ste 119, Corpus Christi, TX | Other | 9,359 | - |
| Quest Diagnostics - Brown Summit Family Medicine 4901 East Highway 150, Brown Summit, NC | Independent lab | 7,920 | COLA |
| Ameripath/Colorado Pathology Consultants 200 Exempla Circle, Lafayette, CO | Independent lab | 7,546 | - |
| Ameripath/Cpc at Yampa Valley Medical Center 1024 Central Park Dr, Steamboat Springs, CO | Independent lab | 7,538 | - |
| Quest Diagnostics - Northwest 7920 Moore's Chapel Road, Charlotte, NC | Independent lab | 7,073 | COLA |
| Ameripath Lubbock 501(A) 1301 Pennsylvania Avenue, Fort Worth, TX | Independent lab | 6,500 | - |
| Quest Diagnostics Massachusetts LLC 851 Middle St, Fall River, MA | Independent lab | 6,336 | - |
| Ameripath Florida LLC 1701 SE Hillmoor Dr Unit C-11, Port Saint Lucie, FL | Independent lab | 6,154 | CAP |
| Ameripath Lubbock 501(A) 800 W Randol Mill Rd, Arlington, TX | Independent lab | 6,000 | - |
| Ameripath Florida LLC 1900 Don Wickham Dr, Clermont, FL | Independent lab | 5,854 | CAP |
| Ameripath Lubbock 501A Corporation at LKS Campus 4000 24th Street, Lubbock, TX | Other | 5,500 | CAP |
| Quest Diagnostics Massachusetts LLC 75 Mt Auburn Street, Cambridge, MA | Independent lab | 5,308 | CAP |
| Ameripath Florida LLC 1324 E Lake Cannon Drive NW, Winter Haven, FL | Independent lab | 4,984 | - |
| Ameripath Community Howard-Kokomo Community Howard 3500 S Lafountain St, Kokomo, IN | Independent lab | 4,966 | CAP |
| Quest Diagnostics 1405 Kellum St, Ste 101, Fairbanks, AK | Independent lab | 4,300 | - |
| Ameripath at Carrollton Regional Medical 4343 Josey Lane Suite 1070, Carrollton, TX | Independent lab | 3,991 | - |
| Quest Diagnostics - Roanoke Ambulatory Surgery 1102 South Jefferson Street, Roanoke, VA | Independent lab | 3,486 | - |
| Ameripath New York, LLC One Greenwich Place, Shelton, CT | Independent lab | 3,300 | CAP |
| Ameripath Indiana / Witham Health Services 2605 N Lebanon Street, Lebanon, IN | Independent lab | 3,000 | CAP |
| Quest Diagnostics- Cone Health Gynecology 719 Green Valley Road, Suite 305, Greensboro, NC | Independent lab | 2,570 | COLA |
| Ameripath/Cpc Offices 1600 Prairie Center Parkway, Brighton, CO | Independent lab | 2,000 | - |
| Quest Diagnostics 11019 Canyon Rd E Ste D, Puyallup, WA | Independent lab | 1,843 | - |
| Dermpath Diagnostics of Alberta Ltd 25 Windermere Drive SW, FN | Independent lab | 1,800 | COLA |
| Quest Diagnostics Inc Shenandoah Community Health 99 Tavern Road, Martinsburg, WV | Physician office | 1,166 | - |
| Ameripath Florida LLC 895 SW 30 Avenue Ste 101, Pompano Beach, FL | Mobile lab | 1,041 | - |
| Ameripath in/ in Surg Ctr N Frozen Sec Lab 8040 Clearvista Pkwy, Indianapolis, IN | Independent lab | 1,000 | CAP |
| Ameripath Indiana at Hancock Regional Hospital 801 N State St, Greenfield, IN | Independent lab | 1,000 | CAP |
| Ameripath Indiana at Riverview Health 395 Westfield Rd, Noblesville, IN | Independent lab | 1,000 | CAP |
| Ameripath Florida LLC 745 Orienta Ave Suite 1201, Altamonte Springs, FL | Independent lab | 669 | - |
| Ameripath Florida LLC 745 Orienta Ave Ste 1201, Altamonte Springs, FL | Independent lab | 541 | - |
| Ameripath Indiana/Major Hospital 2451 Intelliplex Drive, Shelbyville, IN | Independent lab | 500 | CAP |
| Ameripath Kentucky-Cincinnati 6700 Steger Dr, Pathology Suite, Cincinnati, OH | Other | 359 | - |
| Ameripath Indianapolis, PC Dba Dermpath 1306 N Park Ave Carriage House, Indianapolis, IN | Independent lab | 300 | CAP |
| Ameripath in /Community Hospital North 7150 Clearvista Dr, Indianapolis, IN | Hospital | 266 | CAP |
| Ameripath Indiana Frozen Section Lab 12188 N Meridian St Rm 1156, Carmel, IN | Ambulatory surgery center | 230 | CAP |
| Ameripath Florida LLC 745 Orienta Ave Suite 1201, Altamonte Springs, FL | Independent lab | 200 | - |
| Ameripath in/ in Surgery Ctr Noblesville 9700 E 146th St Ste 100, Noblesville, IN | Independent lab | 200 | CAP |
| Ameripath Indiana/Indiana Surgery South Frozen 1550 E County Line Rd S 100, Indianapolis, IN | Ambulatory surgery center | 200 | CAP |
| Haystack Oncology, Inc 101 West Dickman Street Suite 120, Baltimore, MD | Independent lab | 200 | - |
| Ameripath Indiana/Community Hosp East Frozen 1500 N Ritter Ave, Indianapolis, IN | Hospital | 128 | CAP |
| Ameripath Indiana/St Vincent Carmel Frozen Section 13500 N Meridian St, Carmel, IN | Hospital | 114 | CAP |
| Ameripath Tucson, Inc 630 N Alvernon Way Ste 200, Tucson, AZ | Independent lab | 100 | - |
| Ameripath Lubbock 501(A) 750 12th Avenue, Fort Worth, TX | Independent lab | 69 | - |
| Ameripath Ind Frozen Sec Lab at St Vinc Fishers Ho 13861 Olio Rd, Fishers, IN | Hospital | 60 | CAP |
| Ameripath Indiana/Orthopaedic Hospital Frozen Sec- 8400 Northwest Blvd, Indianapolis, IN | Hospital | 52 | CAP |
| Ameripath Indiana Decatur County 720 N Lincoln Street, Greensburg, IN | Independent lab | 20 | CAP |
| Ameripath Lubbock 501(A) 2001 West Rosedale Street, Fort Worth, TX | Independent lab | 17 | - |
| Ameripath New York LLC 110 South Bedford Road, Mount Kisco, NY | Physician office | 3 | - |
| Quest Diagnostics 110 South Bedford Road, 3rd Floor, Ste A, Mount Kisco, NY | Independent lab | 3 | - |
| Quest Diagnostics LLC 299 Seymour Ave, Derby, CT | Independent lab | 1 | - |
| Quest Diagnostics 21 Woodland St, Hartford, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 85 Seymour St Ste 215, Hartford, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 721 Bank St, New London, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 166 Waterbury Road, Prospect, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 3000 Dixwell Ave, Hamden, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 1250 Summer St, Ste 203, Stamford, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 40 Cross St, Ste 260, Norwalk, CT | Independent lab | 1 | - |
| Quest Diagnostics 7 Germantown Rd, Danbury, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 1080 Silas Deane Hwy, Wethersfield, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 955 Main St, Newington, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 280 South Main St Ste 202, Cheshire, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 111 Salem Tpke, Norwich, CT | Independent lab | 1 | - |
| Quest Diagnostics 42 Town St, Ste 1000b, Norwich, CT | Independent lab | 1 | - |
| Quest Diagnostics 665 Boston Post Rd, Old Saybrook, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 1929 East Main St, Torrington, CT | Independent lab | 1 | - |
| Quest Diagnostics, LLC 131 New London Tpke, Glastonbury, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 54 Hazard Ave, Ste 90, Enfield, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 54 West Avon Rd Ste104, Avon, CT | Independent lab | 1 | - |
| Quest Diagnostics 385 Main Street South, Southbury, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 838d Farmington Ave, Farmington, CT | Independent lab | 1 | - |
| Quest Diagnostics 701 Cottage Grove Road, Bldg B, Suite 130, Bloomfield, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 687 Campbell Ave, West Haven, CT | Independent lab | 1 | - |
| Quest Diagnostics 1 Grove Street, New Britain, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 3180 Main St, Bridgeport, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 233 S Broad St, Milford, CT | Independent lab | 1 | - |
| Quest Diagnostics 930 North Colony Rd, Wallingford, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 970 Farmington Ave,, West Hartford, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 99 Executive Blvd, Southington, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 74 Mack Street, Windsor, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 1601 Main Street, Suite 30c, Willimantic, CT | Independent lab | 1 | - |
| Quest Diagnostics LLC 224 North Main Street, Manchester, CT | Independent lab | 1 | - |
| Quest Diagnostics, Inc - Albany 501 New Karner Road, Albany, NY | Independent lab | 1 | - |
| Ameripath at Baylor Surgicare at North Dallas 12230 Coit Road, Suite 200, Dallas, TX | Independent lab | 1 | - |
| Ameripath Texas Inc- Baylor Surgicare 280 Regency Pkwy, Mansfield, TX | Independent lab | 1 | - |
| Quest Diagnostics Her Health 3215 N North Hills Blvd Ste B, Fayetteville, AR | Independent lab | 1 to 2,000 | - |
| Stride South Aurora Family Health Services 15132 E Hampden Ave, Suite G, Aurora, CO | Independent lab | 1 to 2,000 | - |
| Stride North Aurora Family Health Service 3292 Peoria St, Aurora, CO | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics Clinical Laboratories Inc 960 Learning Way, Tallahassee, FL | Independent lab | 2,001 to 10,000 | COLA |
| Quest Diagnostics Clinical Laboratories Inc 2423 Sand Lake Road Suite 110b, Orlando, FL | Independent lab | 10,001 to 25,000 | COLA |
| Quest Diagnostics Clinical Laboratories Inc 701 N 14th St Suite 2, Leesburg, FL | Independent lab | 10,001 to 25,000 | COLA |
| Ameripath Florida LLC 20 Barkley Circle Ste 203, Fort Myers, FL | Independent lab | 50,001 to 100,000 | CAP |
| Quest Diagnostics Clinical Laboratory Inc 8384 Baymeadows Road Suite 1b, Jacksonville, FL | Independent lab | 10,001 to 25,000 | COLA |
| Quest Diagnostics Clinical Laboratories Inc 9220 Estero Park Commons Blvd Suite 1, Estero, FL | Independent lab | 10,001 to 25,000 | COLA |
| Quest Diagnostics Health & Wellness LLC 677 Ala Moana Blvd, Suite 400, Honolulu, HI | Health fair | 1 to 2,000 | - |
| Quest Diagnostics - Fullerton Health Center 3924 W Fullerton Ave - Lab Room, Chicago, IL | Independent lab | 10,001 to 25,000 | - |
| Quest Diagnostics - Belmont Cragin Health Center 5635 W Belmont - Lab Room, Chicago, IL | Independent lab | 10,001 to 25,000 | - |
| Quest Diagnostics - West Town Health Center 1431 N Western Ave - Ste 406, Chicago, IL | Independent lab | 10,001 to 25,000 | - |
| Quest Diagnostics - Wicker Park Health 1127 N Oakley Blvd - 2nd Flr - Lab Room, Chicago, IL | Independent lab | 10,001 to 25,000 | - |
| Quest Diagnostics - Northwest Health Center 1649 N Pulaski Rd - Lab Room, Chicago, IL | Independent lab | 10,001 to 25,000 | - |
| Quest Diagnostics - Chc Rock Island 2750 11th St, Rock Island, IL | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics - Chc East Moline 708 15th Ave, East Moline, IL | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics - Chc Moline 1106 4th Ave, Moline, IL | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics Primecare Young Family 1431 N Western Ave - Ste 202, Chicago, IL | Independent lab | 1 to 2,000 | - |
| Ameripath Indianapolis, PC Community Hospital North Mob 7250 Clearvista Dr, Indianapolis, IN | Independent lab | 2,001 to 10,000 | CAP |
| Ameripath Cincinnati, Inc Dba Richfield 13344 Kickapoo Trail, Carmel, IN | Independent lab | - | - |
| Quest Diagnostics -Chc Clinton Clinic 925 S 4th Street, Clinton, IA | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics-Chc Edgerton 1510 East Rusholme Street, Davenport, IA | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics-Chc River Drive 500 West River Drive, Davenport, IA | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics-Family Med Mt Pleasant 501 S White St Ste 1, Mount Pleasant, IA | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics 10101 Renner Blvd, Dock Door 7, Lenexa, KS | Health fair | 500,001 to 1 million | - |
| Quest Diagnostics - Swla Debakey 501 Dr Michael Debakey Dr,, Lake Charles, LA | Other | 2,001 to 10,000 | - |
| Quest Diagnostics - Swla Crowley 526 Crowley Rayne Highway, Crowley, LA | Other | 1 to 2,000 | - |
| Quest Diagnostics - Swla Lafayette 500 Patterson Street, Lafayette, LA | Other | 1 to 2,000 | - |
| Quest Diagnostics - Swla Opelousas Street 2000 Opelousas St, Lake Charles, LA | Other | 1 to 2,000 | - |
| Quest Diagnostics Swla Lafayetee Endo 200 Larue France, Lafayette, LA | Other | 1 to 2,000 | - |
| Quest Diagnostics Massachusetts LLC 378 Maple Ave, Shrewsbury, MA | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics Massachusetts LLC 900 Union St, Westborough, MA | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics Massachusetts LLC 64 Boyden Road, Holden, MA | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics Massachusetts LLC 225 New Lancaster Road, Leominster, MA | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics Massachusetts LLC 4 Brotherton Way, Auburn, MA | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics Massachusetts LLC 101 Cedar Street, Milford, MA | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics Massachuetts, LLC 24 Newton Street, Southborough, MA | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics for Ayuda Home Healthcare, LLC 27601 Schoolcraft Road Suite C, Livonia, MI | Home health agency | 1 to 2,000 | - |
| Quest Diagnostics - Gargar Clinic 2711 E Franklin Ave, Room A, Minneapolis, MN | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics - Greater Meridian Rrl 2701 Davis St, Meridian, MS | Physician office | 2,001 to 10,000 | - |
| Quest Diagnostics - Rockhill Women's Care 5701 W 119th Street, Suite 225, Overland Park, KS | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics - Pernikoff 2865 Netherton, Suite A, Saint Louis, MO | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics - Women's Health 2340 Katy Ln, Lab Room, Poplar Bluff, MO | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics Swope Health 3801 Dr Martin Luther King Jr Blvd, Ste 1130/1136, Kansas City, MO | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics Health & Wellness LLC 4230 Burnham Ave, Las Vegas, NV | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics Health and Wellness LLC 185 Old Country Rd - Suite 7, Riverhead, NY | Health fair | 25,001 to 50,000 | - |
| Quest Diagnostics - Nc Kidney Care 2605 Forest Hills Rd SW Ste A, Wilson, NC | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics - Nc Kidney Care 4082 Capital Drive, Rocky Mount, NC | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics - Dougherty 10450 Park Road #200, Charlotte, NC | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics - Four Oaks 864 Black Creek Rd, Four Oaks, NC | Physician office | 2,001 to 10,000 | - |
| Quest Diagnostics - Clayton 236 Butternut Ln, Clayton, NC | Physician office | 2,001 to 10,000 | - |
| Quest Diagnostics - Riverwood 100 Cunningham Ln, Clayton, NC | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics - Westridge 3351 Battleground Ave, Greensboro, NC | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics Roanoke Rapids 1385 Medical Centre Drive, Roanoke Rapids, NC | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics - Rowan 611 Mocksville Ave 1st Floor, Salisbury, NC | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics, LLC Barberton 165 Fifth Street Southeast, Barberton, OH | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics, LLC Stow 3825 Fishcreek Rd, #140, Stow, OH | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics, LLC Medina 3780 Medina Rd Ste 160, Medina, OH | Independent lab | 1 to 2,000 | - |
| Quest Diagnostics--St Thomas Medical Complex Rrl 4230 Harding Pike, Suite 420, Nashville, TN | Independent lab | 2,001 to 10,000 | COLA |
| Quest Diagnostics Laboratories 17350 St Luke's Way, Suite 400, The Woodlands, TX | Independent lab | 2,001 to 10,000 | - |
| Quest Diagnostics Laboratories 2255 Mossy Oaks, Suite # 600, Spring, TX | Other | 2,001 to 10,000 | - |
| Quest Diagnostics - Rheumatology & Arthritis 10410 Medical Loop Unit 6 B, Laredo, TX | Other | 25,001 to 50,000 | COLA |
| Quest Diagnostics Northside Family Elsa 119 Retama Street Ste D, Elsa, TX | Other | 2,001 to 10,000 | - |
| Quest Diagnostics Valley Medical Arts 5201 N 10th Street, McAllen, TX | Other | - | - |
| Quest Diagnostics - San Benito Medical Associates 351 N Sam Houston Blvd, San Benito, TX | Other | 10,001 to 25,000 | - |
| Quest Diagnostics - San Benito Medical Assoc Harl 721 W Harrison Ave, Harlingen, TX | Other | 10,001 to 25,000 | - |
| Quest Diagnostics Northside Family Medical Center 5128 N 10th St, McAllen, TX | Other | 10,001 to 25,000 | - |
| Quest Diagnostics - Roanoke Electric Road 3239 Electric Road - Suite A, Roanoke, VA | Independent lab | 1 to 2,000 | - |