| Apogee Clinical Research, LLC | Huntsville | Alabama | 35801 | - |
| Applied Research Center of Arkansas | Little Rock | Arkansas | 72205 | - |
| AME Clinical Research | Huntington Beach | California | 92647 | - |
| Amicis Research Center | Northridge | California | 91325 | - |
| FOMAT - Vista del Mar Medical Group | Oxnard | California | 93036 | - |
| Central Coast Nephrology | Salinas | California | 93901 | - |
| North America Research Institute | San Dimas | California | 91773 | - |
| Amicis Research Center | Santa Clarita | California | 91355 | - |
| Valiance Clinical Research | Tarzana | California | 91356 | - |
| Amicis Research Center | Valencia | California | 91355 | - |
| National Institute of Clinical Research, Inc. | Victorville | California | 92392 | - |
| Yale University | New Haven | Connecticut | 06510 | - |
| D&H Doral Research Center | Doral | Florida | 33122 | - |
| AGA Clinical Trials | Hialeah | Florida | 33012 | - |
| Convenient Medical Center | Hialeah | Florida | 33013 | - |
| Elixia Hollywood | Hollywood | Florida | 33024 | - |
| D&H Pompano Research Center | Margate | Florida | 33063 | - |
| D&H National Research Centers, Inc | Miami | Florida | 33155 | - |
| LCC Medical Research Institute | Miami | Florida | 33126 | - |
| Regenerate Primary Medical Research, LLC | Miami | Florida | 33155 | - |
| Ocean Blue Medical Research Center - Internal Medicine | Miami Springs | Florida | 33166 | - |
| Innovia Research Center | Miramar | Florida | 33027 | - |
| Central Florida Kidney Specialists Oakwater | Orlando | Florida | 32806 | - |
| Bolanos Clinical Research | Pembroke Pines | Florida | 33026 | - |
| Progressive Medical Research | Port Orange | Florida | 32127 | - |
| CDC Research Institute | Port Saint Lucie | Florida | 34952 | - |
| D&H Tamarac Research Center | Tamarac | Florida | 33321 | - |
| Metabolic Research Institute | West Palm Beach | Florida | 33401 | - |
| Privia Medical Group of Georgia, LLC | Savannah | Georgia | 31406 | - |
| Research by Design, LLC - Internal Medicine | Chicago | Illinois | 60643 | - |
| IMA Clinical Research | Monroe | Louisiana | 71201 | - |
| University of Michigan | Ann Arbor | Michigan | 48109 | - |
| Elixia Michigan Kidney Consultants | Pontiac | Michigan | 48341 | - |
| Elixia MNA | City of Saint Peters | Missouri | 63376 | - |
| Clinical Research Consultants, LLC | Kansas City | Missouri | 64111 | - |
| University of Nebraska Medical Center | Omaha | Nebraska | 68198 | - |
| DaVita Clinical Research | Las Vegas | Nevada | 89107 | - |
| Velocity Clinical Research | Binghamton | New York | 13905 | - |
| CHEAR Center LLC | The Bronx | New York | 10455 | - |
| Eastern Nephrology Associates - Greenville West | Greenville | North Carolina | 27834 | - |
| Eastern Nephrology Associates - New Bern | New Bern | North Carolina | 28562 | - |
| Brookview Hills Research Associates, LLC | Winston-Salem | North Carolina | 27103 | - |
| Northeast Clinical Research Center | Bethlehem | Pennsylvania | 18017 | - |
| Suburban Research Associates | West Chester | Pennsylvania | 19380 | - |
| Southeast Renal Research Institute | Chattanooga | Tennessee | 37404 | - |
| Arlington Nephrology, PLLC. | Arlington | Texas | 76015 | - |
| M3 Wake Research Dallas - Internal Medicine | Dallas | Texas | 75224 | - |
| Revival Research Institute, LLC | Dallas | Texas | 75231 | - |
| Epic Medical Research LLC | DeSoto | Texas | 75115 | - |
| El Paso Kidney Specialists-Davita Clinical Research | El Paso | Texas | 79902 | - |
| Clinical Trial Network, LLC | Houston | Texas | 77074 | - |
| Juno Research, LLC | Houston | Texas | 77040 | - |
| Prolato Research LLC | Houston | Texas | 77054 | - |
| Gulf Coast Clinical Research | Katy | Texas | 77450 | - |
| R & H Clinical Research, Inc. | Katy | Texas | 77450 | - |
| Sunbeam Clinical Research | McKinney | Texas | 75069 | - |
| Clinical Advancement Center | San Antonio | Texas | 78212 | - |
| University of Texas Health - San Antonio | San Antonio | Texas | 78229 | - |