| Applied Research Center of Arkansas | Little Rock | Arkansas | 72205 | - |
| National Institute of Clinical Research - Bakersfield | Bakersfield | California | 93309 | - |
| Velocity Clinical Research, Huntington Park | Huntington Park | California | 90255 | - |
| 310 Clinical Research | Inglewood | California | 90301 | - |
| Long Beach Clinical Trials | Long Beach | California | 90806 | - |
| Long Beach Research Institute | Long Beach | California | 90805 | - |
| Pacific Clinical Studies Inc. | Los Alamitos | California | 90720 | - |
| Downtown L.A. Research Center, Inc. | Los Angeles | California | 90017 | - |
| Clinica mi Salud by Focil Med | Oxnard | California | 93030 | - |
| FOMAT Medical Research | Oxnard | California | 93030 | - |
| Paradigm Clinical Research, LLC | Redding | California | 96001 | - |
| Acclaim Clinical Research | San Diego | California | 92120 | - |
| Tweedy Medical Group - Charity Health | South Gate | California | 90280 | - |
| Breathe Clear Institute for Sinus and Allergy Relief | Torrance | California | 90503 | - |
| Paradigm Clinical Research, LLC | Wheat Ridge | Colorado | 80033 | - |
| Emerson Clinical Research Institute | Washington D.C. | District of Columbia | 20009 | - |
| Georgetown University Medical Center | Washington D.C. | District of Columbia | 20007 | - |
| Innovative Research of West Florida | Clearwater | Florida | 33756 | - |
| Invictus Clinical Research Group | Coconut Creek | Florida | 33073 | - |
| Hillcrest Medical Research | DeLand | Florida | 32720 | - |
| Hillcrest Medical Research LLC | DeLand | Florida | 32720 | - |
| Universal Axon Clinical Research, LLC | Doral | Florida | 33166 | - |
| Herco Medical and Research Center Inc | Flagami | Florida | 33126 | - |
| Proactive Clinical Research,LLC | Fort Lauderdale | Florida | 33308 | - |
| C & R Research Services USA | Fort Myers | Florida | 33919 | - |
| Qway Research LLC | Hialeah | Florida | 33010 | - |
| Sunbright Health Medical Centers | Homestead | Florida | 33032 | - |
| Bio-Medical Research LLC | Miami | Florida | 33144 | - |
| Infinite Clinical Research | Miami | Florida | 33133 | - |
| Kendall South Medical Center | Miami | Florida | 33185 | - |
| Nuovida Research Center | Miami | Florida | 33186 | - |
| Global Health Research Center, Inc. | Miami Lakes | Florida | 33016 | - |
| Adult Medicine of Lake County, Inc. | Mt. Dora | Florida | 32757 | - |
| Innovation Medical Research Center | Palmetto Bay | Florida | 33157 | - |
| DBC Research USA | Pembroke Pines | Florida | 33029 | - |
| GCP , Global Clinical Professionals | St. Petersburg | Florida | 33705 | - |
| Global Health Research Center - Tampa | Tampa | Florida | 33615 | - |
| The Hope Clinic of Emory University | Decatur | Georgia | 30030 | - |
| Javara - Privia Medical Group Georgia - Fayetteville | Fayetteville | Georgia | 30214 | - |
| Coastal Heritage Clinical Research | Hinesville | Georgia | 31313 | - |
| Velocity Clinical Research, Savannah | Savannah | Georgia | 31406 | - |
| St. Luke's Children's | Boise | Idaho | 83712 | - |
| St. Luke's Elks Children's Pavilion | Boise | Idaho | 83712 | - |
| St. Luke's Humphreys Diabetes Center | Boise | Idaho | 83702 | - |
| Koch Family Medicine | Morton | Illinois | 61550 | - |
| UL International Travel Clinic | Louisville | Kentucky | 40202 | - |
| University of Louisville Hospital | Louisville | Kentucky | 40202 | - |
| University of Louisville School of Medicine | Louisville | Kentucky | 40202 | - |
| Centennial Medical Group | Columbia | Maryland | 21045 | - |
| Jadestone Clinical Research | Silver Spring | Maryland | 20904 | - |
| Brigham and Women's Hospital | Boston | Massachusetts | 02115 | - |
| University of Massachusetts Chan Medical School | Worcester | Massachusetts | 01655 | - |
| Revival Research Institute, LLC | Dearborn | Michigan | 48126 | - |
| Henry Ford St. John Hospital | Grosse Pointe Woods | Michigan | 48236 | - |
| Mercury Street Medical Group, PLLC | Butte | Montana | 59701 | - |
| Velocity Clinical Research, Grand Island | Grand Island | Nebraska | 68803 | - |
| Velocity Clinical Research, Omaha | Omaha | Nebraska | 68134 | - |
| McGill Family Practice | Papillion | Nebraska | 68046 | - |
| Las Vegas Clinical Trials | North Las Vegas | Nevada | 89030 | - |
| Upstate Global Health Institute | East Syracuse | New York | 13057 | - |
| Upstate Connect Care | Syracuse | New York | 13210 | - |
| Montefiore Medical Center | The Bronx | New York | 10467 | - |
| Prime Global Research | The Bronx | New York | 10456 | - |
| Monroe Biomedical Research | Monroe | North Carolina | 28112 | - |
| Remington-Davis, Inc | Columbus | Ohio | 43215 | - |
| Preferred Primary Care Physicians | Uniontown | Pennsylvania | 15401 | - |
| WR-Clinsearch, LLC | Chattanooga | Tennessee | 37421 | - |
| Southwest Family Medicine Associates | Dallas | Texas | 75235 | - |
| Southwest Mind and Body Care | Dallas | Texas | 75235 | - |
| Zenos Clinical Research | Dallas | Texas | 75230 | - |
| Gulf Coast Clinical Research - Houston | Houston | Texas | 77070 | - |
| Memorial Hermann Hospital TMC | Houston | Texas | 77030 | - |
| Mercury Clinical Research - Santa Clara Family Clinic | Houston | Texas | 77087 | - |
| Next Level Urgent Care | Houston | Texas | 77057 | - |
| The Crofoot Research Center | Houston | Texas | 77098 | - |
| The University of Texas Health Science Center at Houston | Houston | Texas | 77030 | - |
| UT Physicians | Houston | Texas | 77030 | - |
| Epic Clinical Research | Lewisville | Texas | 75057 | - |
| Javara - Privia Medical Group North Texas - Stephenville | Stephenville | Texas | 76401 | - |
| Javara - Privia Medical Group Gulf Coast - Sugarland | Sugar Land | Texas | 77478 | - |
| Mercury Clinical Research - North Houston Internal Medicine & Pediatric Clinic | Tomball | Texas | 77375 | - |
| Alpine Research Organization | Clinton | Utah | 84015 | - |
| Velocity Clinical Research, Suffolk | Suffolk | Virginia | 23435 | - |
| Eastside Research Associates | Redmond | Washington | 98052 | - |