| Digestive Health Specialists of the Southeast | Dothan | Alabama | 36305 | - |
| Dcr-Pi, Pc | Litchfield Park | Arizona | 85340 | - |
| Maricopa Integrated Health System | Phoenix | Arizona | 85008 | - |
| Physicians Research Group | Tempe | Arizona | 85284 | - |
| Yuma Gastro LLC | Yuma | Arizona | 85364 | - |
| Valley Gastroenterology | Arcadia | California | 91006 | - |
| Care Access Research | Berkeley | California | 94705 | - |
| Citrus Valley Health Partners | Covina | California | 91722 | - |
| Valley View Internal Medicine | Garden Grove | California | 92843 | - |
| Om Research, LLC | Lancaster | California | 93534 | - |
| Catalina Research Institute, LLC | Montclair | California | 91763 | - |
| California Medical Research Associates | Northridge | California | 91324 | - |
| Gastroenterology Associates | Pasadena | California | 91105 | - |
| Clinical Applications Laboratories, Inc. | San Diego | California | 92103 | - |
| UCSF Medical Center at Mission Bay | San Francisco | California | 94158 | - |
| University of Colorado | Aurora | Colorado | 80045 | - |
| Delta Waves Sleep Disorders and Research Center | Colorado Springs | Colorado | 80918 | - |
| Clinical Research of West Florida, Inc. (Clearwater) | Clearwater | Florida | 33765 | - |
| Gastroenterology Consultants of Clearwater | Clearwater | Florida | 33756 | - |
| West Central Gastroenterology d/b/a Gastro Florida | Clearwater | Florida | 33761 | - |
| Pioneer Clinical Research | Coral Springs | Florida | 33067 | - |
| Direct Helpers Medical Center | Hialeah | Florida | 33012 | - |
| The Center for Gastrointestinal Disorders | Hollywood | Florida | 33021 | - |
| Nature Coast Clinical Research, LLC | Inverness | Florida | 34452 | - |
| SIH Research, LLC | Kissimmee | Florida | 34741 | - |
| Columbus Clinical Services, LLC | Miami | Florida | 33125 | - |
| IMIC, Inc. | Miami | Florida | 33176 | - |
| Research Associates of South Florida, LLC | Miami | Florida | 33134 | - |
| Inpatient Research Clinic, LLC | Miami Lakes | Florida | 33014 | - |
| Life Medical Center & Research, Inc | Miami Lakes | Florida | 33014 | - |
| Wellness Clinical Research | Miami Lakes | Florida | 33016 | - |
| Pharma Research International, Inc. | Naples | Florida | 34110 | - |
| Center for Interventional Endoscopy | Orlando | Florida | 32803 | - |
| Clintheory Healthcare | Orlando | Florida | 32818 | - |
| Gastroenterology Associates of Pensacola, PA | Pensacola | Florida | 32503 | - |
| Florida Digestive Specialist | St. Petersburg | Florida | 33709 | - |
| Florida Medical Clinic LLC | Zephyrhills | Florida | 33542-7505 | - |
| Digestive Healthcare of Georgia | Atlanta | Georgia | 30309 | - |
| Gastrointestinal Diseases Research | Columbus | Georgia | 31904 | - |
| Atlanta Gastroenterology Specialists, PC | Suwanee | Georgia | 30024 | - |
| Grand Teton Research Group | Idaho Falls | Idaho | 83404 | - |
| NorthShore University HealthSystem | Evanston | Illinois | 60201 | - |
| Indiana University School of Medicine | Indianapolis | Indiana | 46202 | - |
| Iowa Digestive Disease Center | Clive | Iowa | 50325 | - |
| Cotton-O'Neil Clinical Research Center, Digestive Health | Topeka | Kansas | 66606 | - |
| Texas Digestive Disease Consultants | Baton Rouge | Louisiana | 70809 | - |
| Clinical Trials of SWLA, LLC | Lake Charles | Louisiana | 70601 | - |
| Delta Research Partners LLC | Monroe | Louisiana | 71201 | - |
| Nola Research Works, LLC | New Orleans | Louisiana | 70125 | - |
| Tulane Univ School of Med | New Orleans | Louisiana | 70112 2715 | - |
| Clinical Research Institute of Michigan, LLC | Chesterfield | Michigan | 48047 | - |
| Henry Ford Health System | Novi | Michigan | 48377 | - |
| Gastroenterology Associates of Western Michigan, P.L.C. | Wyoming | Michigan | 49519 | - |
| Huron Gastroenterology Associates | Ypsilanti | Michigan | 48197 | - |
| MNGI Digestive Health - Plymouth Endoscopy Center & Clinic | Plymouth | Minnesota | 55446 | - |
| Care Access Research LLC | Jackson | Mississippi | 39206 | - |
| Digestive Health Specialists | Tupelo | Mississippi | 38801 | - |
| Washington University Medical School | St Louis | Missouri | 63110 | - |
| Capital Health Medical Center Hopewell | Pennington | New Jersey | 08534 | - |
| Northwell Health | Great Neck | New York | 11021 | - |
| NYU Langone Long Island Clinical Research Associates | Lake Success | New York | 11042 | - |
| Weill Cornell Medical College | New York | New York | 10021 | - |
| University of North Carolina | Chapel Hill | North Carolina | 27599 | - |
| Carolina Digestive Diseases and Endoscopy Center | Greenville | North Carolina | 27834 | - |
| Wake Forest University School of Medicine | Winston-Salem | North Carolina | 27157-1045 | - |
| Trinity Health Center Medical Arts | Minot | North Dakota | 58701 | - |
| META Medical Research Institute, LLC | Dayton | Ohio | 45432 | - |
| Paramount Medical Research | Middleburg Heights | Ohio | 44130 | - |
| Care Access Research - Youngstown | Poland | Ohio | 44514 | - |
| Great Lakes Medical Research, LLC | Westlake | Ohio | 44145 | - |
| Central Sooner Research | Norman | Oklahoma | 73071 | - |
| University of Oklahoma Health Sciences Center | Oklahoma City | Oklahoma | 73104 | - |
| Digestive Disease Associates | Wyomissing | Pennsylvania | 19610 | - |
| Ocean State Clinical Research Partners | Lincoln | Rhode Island | 02865 | - |
| Invocare Clinical Research Center | Mauldin | South Carolina | 29662 | - |
| Invocare Clinical Research Center | West Columbia | South Carolina | 29169 | - |
| Midwest Medical Care | Sioux Falls | South Dakota | 57108 | - |
| Gastro One | Germantown | Tennessee | 38138 | - |
| Galen Medical Group | Hixson | Tennessee | 37343 | - |
| Vanderbilt University Medical Center | Nashville | Tennessee | 37232 | - |
| University of Texas Medical Branch at Galveston | Galveston | Texas | 77555 | - |
| Digestive Health Associates of Texas | Garland | Texas | 75044 | - |
| Biopharma Informatic, Inc. | Houston | Texas | 77043 | - |
| Houston Methodist Research Ins | Houston | Texas | 77030 | - |
| Bandera Family Health Care | San Antonio | Texas | 78249 | - |
| Gastroenterology Research of San Antonio | San Antonio | Texas | 78229 | - |
| Southern Star Research Institute, LLC | San Antonio | Texas | 78229 | - |
| Texas Digestive Disease Consultants | Southlake | Texas | 76092 | - |
| GI and Liver Research, LLC | Webster | Texas | 77598 | - |
| Care Access Research LLC - Salt Lake City | Ogden | Utah | 84403 | - |
| Care Access Research LLC - Salt Lake City | Salt Lake City | Utah | 84124 | - |
| Emeritas Research Group | Leesburg | Virginia | 20176 | - |
| Blue Ridge Medical Research | Lynchburg | Virginia | 24502 | - |
| The Gastroenterology Group, P.C. | Reston | Virginia | 20191 | - |
| Carilion Clinic | Roanoke | Virginia | 24016 | - |
| University of Washington Medical Center | Seattle | Washington | 98195-6424 | - |
| Allegiance Research Specialists, LLC | Milwaukee | Wisconsin | 53226 | - |
| Wisconsin Center for Advanced Research | Milwaukee | Wisconsin | 53215 | - |