| Digestive Health Specialists of the Southeast (Gastroenterology Associates of Dothan) - Dothan | Dothan | Alabama | 36305 | - |
| Mayo Clinic Hospital | Phoenix | Arizona | 85054 | - |
| Arizona Digestive Health, P.C (ADH) | Sun City | Arizona | 85351 | - |
| University of Arizona-CATS Research Center | Tucson | Arizona | 85724 | - |
| Valley View Internal Medicine | Garden Grove | California | 92845-2006 | - |
| 310 Clinical Research | Inglewood | California | 90301 | - |
| UCSD Medical Center | La Jolla | California | 92037-0897 | - |
| Gastro Care Associates | Lancaster | California | 93534 | - |
| Om Research LLC | Lancaster | California | 93534 | - |
| United Gastroenterologists | Los Alamitos | California | 90720 | - |
| Acclaim Clinical Research, Inc. | San Diego | California | 92120 | - |
| Kaiser Permanente | San Francisco | California | 94115 | - |
| UCSF/Medical Center at Mount Zion | San Francisco | California | 94115 | - |
| Rocky Mountain Gastroenterology | Littleton | Colorado | 80120 | - |
| Peak Gastroenterology Surgery Center | Lone Tree | Colorado | 80124 | - |
| Access Research Institute | Brooksville | Florida | 34613 | - |
| Gastro Florida | Clearwater | Florida | 33756 | - |
| HealthMed Clinical Center Inc. | Coral Gables | Florida | 33134 | - |
| Hi Tech and Global Research, LLC | Coral Gables | Florida | 33134 | - |
| NeoClinical Research | Hialeah | Florida | 33016 | - |
| The Sister Life Research | Hialeah | Florida | 33013 | - |
| Clinical Research of Osceola, LLC | Kissimmee | Florida | 34741 | - |
| Florida Research Institute - Lakewood | Lakewood Rch | Florida | 34211 | - |
| Ambert Medical Research | Miami | Florida | 33176 | - |
| LCC Medical Research Institute, LLC | Miami | Florida | 33126 | - |
| Orlando Regional Healthcare | Orlando | Florida | 32806 | - |
| Guardian Angel Research Center, LLC | Tampa | Florida | 33614 | - |
| Nodal Medical Center Research - NMC | Tampa | Florida | 33607 | - |
| University of South Florida School of Medicine Morsani Center for Advanced Health Care | Tampa | Florida | 33612 | - |
| Theia Clinical Research Centers, LLC | Temple Terrace | Florida | 33617 | - |
| Cleveland Clinic Florida | Weston | Florida | 33331 | - |
| Florida Medical Clinic - Orlando Health | Zephyrhills | Florida | 33542 | - |
| Atlanta Gastroenterology Associates | Atlanta | Georgia | 30342 | - |
| Digestive Healthcare of Georgia | Atlanta | Georgia | 30327 | - |
| Gastroenterology Associates of Central Georgia | Macon | Georgia | 31201 | - |
| Grand Teton Research Group, PLLC | Idaho Falls | Idaho | 83404 | - |
| Northwestern Memorial Hospital | Chicago | Illinois | 60611 | - |
| Illinois Gastroenterology Group-Glenview powered by GI Alliance | Glenview | Illinois | 60026 | - |
| GI Alliance - Gurnee | Gurnee | Illinois | 60031 | - |
| Indiana University Health University Hospital | Indianapolis | Indiana | 46202 | - |
| Gastroenterology Health Partners, PLLC | New Albany | Indiana | 47150 | - |
| Kansas Gastroenterology, LLC under Clinical Trials Network | Wichita | Kansas | 67226 | - |
| Tri-State Gastroenterology Associates | Crestview Hills | Kentucky | 41017-3409 | - |
| Gastroenterology Health Partners, PLLC | Louisville | Kentucky | 40218 | - |
| Boston University | Boston | Massachusetts | 02118 | - |
| Brigham and Women's Hospital | Boston | Massachusetts | 02115 | - |
| Michigan Center of Medical Research | Farmington Hills | Michigan | 48334 | - |
| Gastroenterology Associates and Endoscopy Center of North Mississippi | Oxford | Mississippi | 38655 | - |
| Delta Gastroenterology & Endoscopy Center | Southaven | Mississippi | 38671 | - |
| Las Vegas Clinical Trials, LLC | North Las Vegas | Nevada | 89030 | - |
| Lenox Hill Hospital | New York | New York | 10075 | - |
| Mount Sinai Hospital - IBD Clinical Center | New York | New York | 10029 | - |
| DiGiovanna Inst for Med Ed&Res | North Massapequa | New York | 11758 | - |
| Queens Village Medical Care | Queens Village | New York | 11428 | - |
| Mainstreet - Richmond Hill Clinic | Richmond Hill | New York | 11418 | - |
| Gastroenterology Group Of Rochester, LLP | Rochester | New York | 14618 | - |
| University of Rochester Medical Center | Rochester | New York | 14642 | - |
| Atrium Health, Carolinas Healthcare System | Charlotte | North Carolina | 28204 | - |
| Omega Research North Carolina, LLC | Fuquay-Varina | North Carolina | 27526 | - |
| Monroe Biomedical Research | Monroe | North Carolina | 28112 | - |
| Dayton Gastroenterology, Inc. | Beavercreek | Ohio | 45440 | - |
| Digestive Disease Consultants | Brunswick | Ohio | 44212 | - |
| University of Cincinnati Hospital | Cincinnati | Ohio | 45267 | - |
| Cleveland Clinic Foundation | Cleveland | Ohio | 44195 | - |
| Ohio Gastroenterology Group | Columbus | Ohio | 43202 | - |
| The Ohio State University Wexner Medical Center | Columbus | Ohio | 43210 | - |
| Gastro Health- Liberty | Liberty Township | Ohio | 45044 | - |
| Gastro Intestinal Research Institute of Northern Ohio | Westlake | Ohio | 44145 | - |
| Central Sooner Research | Norman | Oklahoma | 73071 | - |
| Penn State Milton S. Hershey Medical Center | Hershey | Pennsylvania | 17033 | - |
| Frontier Clinical Re search, LLC | Uniontown | Pennsylvania | 15401-9069 | - |
| University Gastroenterology | Providence | Rhode Island | 02904 | - |
| Medical University of South Carolina | Charleston | South Carolina | 29425 | - |
| Gastroenterology Associates | Greenville | South Carolina | 29607 | - |
| Gastro One | Germantown | Tennessee | 38138 | - |
| Quality Medical Research | Nashville | Tennessee | 37211 | - |
| Texas Clinical Research Institute, LLC | Arlington | Texas | 76012 | - |
| Proactive El Paso,LLC | El Paso | Texas | 79902 | - |
| Amel Med LLC | Georgetown | Texas | 78628 | - |
| Cano Medical Center | Harlingen | Texas | 78550 | - |
| TDDC dba GI Alliance Research | Mansfield | Texas | 76063 | - |
| SMS Clinical Research, LLC | Mesquite | Texas | 75149 | - |
| Gastroenterology Research of America, LLC | San Antonio | Texas | 78229 | - |
| GI Alliance - Southlake | Southlake | Texas | 76092 | - |
| Baylor Scott and White Medical Center | Temple | Texas | 76508 | - |
| Tyler Research Institute, LLC | Tyler | Texas | 75701 | - |
| Tidewater Gastroenterology Pllc T/A Gastro. Assoc. of Tidewater | Chesapeake | Virginia | 23320 | - |
| Emeritas Research Group | Lansdowne Town Center | Virginia | 20176 | - |
| Blue Ridge Medical Research - Gastroenterology Associates of Central Virginia | Lynchburg | Virginia | 24502 | - |
| Gastroenterology Consultants and Endoscopy Center of Southwest Virginia | Roanoke | Virginia | 24014 | - |
| Tidewater Physicians Multispecialty Group (TPMG) - Clinical Research Division - Williamsburg | Williamsburg | Virginia | 23188 | - |
| The Vancouver Clinic | Vancouver | Washington | 98664 | - |