| Comprehensive Cancer Center at University of Alabama at Birmingham | Birmingham | Alabama | 35294-3300 | - |
| CCOP - Mayo Clinic Scottsdale Oncology Program | Scottsdale | Arizona | 85259-5404 | - |
| City of Hope Comprehensive Cancer Center | Duarte | California | 91010-3000 | - |
| Veterans Affairs Medical Center - Palo Alto | Palo Alto | California | 94304-1290 | - |
| Stanford Cancer Center at Stanford University Medical Center | Stanford | California | 94305-5216 | - |
| CCOP - Colorado Cancer Research Program, Incorporated | Denver | Colorado | 80224 | - |
| CCOP - Christiana Care Health Services | Newark | Delaware | 19713 | - |
| MBCCOP - Howard University Cancer Center | Washington D.C. | District of Columbia | 20060 | - |
| Veterans Affairs Medical Center - Gainesville | Gainesville | Florida | 32608-1197 | - |
| Veterans Affairs Medical Center - Miami | Miami | Florida | 33125 | - |
| H. Lee Moffitt Cancer Center and Research Institute at University of South Florida | Tampa | Florida | 33612-9497 | - |
| Veterans Affairs Medical Center - Tampa (Haley) | Tampa | Florida | 33612 | - |
| Winship Cancer Institute of Emory University | Atlanta | Georgia | 30322 | - |
| Veterans Affairs Medical Center - Atlanta (Decatur) | Decatur | Georgia | 30033 | - |
| Robert H. Lurie Comprehensive Cancer Center at Northwestern University | Chicago | Illinois | 60611 | - |
| Veterans Affairs Medical Center - Lakeside Chicago | Chicago | Illinois | 60611-4494 | - |
| CCOP - Central Illinois | Decatur | Illinois | 62526 | - |
| CCOP - Evanston | Evanston | Illinois | 60201 | - |
| CCOP - Illinois Oncology Research Association | Peoria | Illinois | 61615-7828 | - |
| Swedish-American Regional Cancer Center | Rockford | Illinois | 61104-2315 | - |
| CCOP - Carle Cancer Center | Urbana | Illinois | 61801 | - |
| Indiana University Cancer Center | Indianapolis | Indiana | 46202-5289 | - |
| Veterans Affairs Medical Center - Indianapolis (Roudebush) | Indianapolis | Indiana | 46202 | - |
| CCOP - Northern Indiana CR Consortium | South Bend | Indiana | 46601 | - |
| CCOP - Cedar Rapids Oncology Project | Cedar Rapids | Iowa | 52403-1206 | - |
| CCOP - Iowa Oncology Research Association | Des Moines | Iowa | 50309-1016 | - |
| John Stoddard Cancer Center at Iowa Lutheran Hospital | Des Moines | Iowa | 50316-2301 | - |
| John Stoddard Cancer Center at Iowa Methodist Medical Center | Des Moines | Iowa | 50309 | - |
| Mercy Cancer Center at Mercy Medical Center - Des Moines | Des Moines | Iowa | 50314 | - |
| Burgess Health Center | Onawa | Iowa | 51040 | - |
| CCOP - Wichita | Wichita | Kansas | 67214-3882 | - |
| Veterans Affairs Medical Center - Wichita | Wichita | Kansas | 67218 | - |
| CCOP - Ochsner | New Orleans | Louisiana | 70121 | - |
| MBCCOP - LSU Health Sciences Center | New Orleans | Louisiana | 70112 | - |
| Beth Israel Deaconess Medical Center | Boston | Massachusetts | 02215 | - |
| Cancer Center at Tufts - New England Medical Center | Boston | Massachusetts | 02111 | - |
| CCOP - Michigan Cancer Research Consortium | Ann Arbor | Michigan | 48106 | - |
| CCOP - Kalamazoo | Kalamazoo | Michigan | 49007-3731 | - |
| CCOP - Duluth | Duluth | Minnesota | 55805 | - |
| University of Minnesota Cancer Center | Minneapolis | Minnesota | 55455 | - |
| Veterans Affairs Medical Center - Minneapolis | Minneapolis | Minnesota | 55417-2399 | - |
| Mayo Clinic Cancer Center | Rochester | Minnesota | 55905 | - |
| CCOP - Metro-Minnesota | Saint Louis Park | Minnesota | 55416 | - |
| CCOP - Missouri Valley Cancer Consortium | Omaha | Nebraska | 68106 | - |
| Veterans Affairs Medical Center - Omaha | Omaha | Nebraska | 68105 | - |
| Midlands Cancer Center at Midlands Community Hospital | Papillion | Nebraska | 68128-4157 | - |
| CCOP - Southern Nevada Cancer Research Foundation | Las Vegas | Nevada | 89106 | - |
| Norris Cotton Cancer Center at Dartmouth-Hitchcock Medical Center | Lebanon | New Hampshire | 03756-0002 | - |
| Veterans Affairs Medical Center - East Orange | East Orange | New Jersey | 07018 | - |
| CCOP - Northern New Jersey | Hackensack | New Jersey | 07601 | - |
| Cancer Institute of New Jersey at UMDNJ - Robert Wood Johnson Medical School | New Brunswick | New Jersey | 08903 | - |
| MBCCOP - University of New Mexico HSC | Albuquerque | New Mexico | 87131 | - |
| Veterans Affairs Medical Center - Brooklyn | Brooklyn | New York | 11209 | - |
| NYU Cancer Institute at New York University Medical Center | New York | New York | 10016 | - |
| Veterans Affairs Medical Center - New York | New York | New York | 10010 | - |
| Albert Einstein Cancer Center at Albert Einstein College of Medicine | The Bronx | New York | 10461 | - |
| MBCCOP-Our Lady of Mercy Cancer Center | The Bronx | New York | 10466 | - |
| CCOP - Merit Care Hospital | Fargo | North Dakota | 58122 | - |
| Cleveland Clinic Taussig Cancer Center | Cleveland | Ohio | 44195 | - |
| MetroHealth's Cancer Care Center at MetroHealth Medical Center | Cleveland | Ohio | 44109 | - |
| CCOP - Columbus | Columbus | Ohio | 43206 | - |
| CCOP - Toledo Community Hospital | Toledo | Ohio | 43623-3456 | - |
| CCOP - Oklahoma | Tulsa | Oklahoma | 74136 | - |
| CCOP - Geisinger Clinic and Medical Center | Danville | Pennsylvania | 17822-2001 | - |
| Penn State Cancer Institute at Milton S. Hershey Medical Center | Hershey | Pennsylvania | 17033-0850 | - |
| Abramson Cancer Center of the University of Pennsylvania | Philadelphia | Pennsylvania | 19104 | - |
| Fox Chase Cancer Center | Philadelphia | Pennsylvania | 19111-2497 | - |
| Hahnemann University Hospital | Philadelphia | Pennsylvania | 19102-1192 | - |
| Hillman Cancer Center at University of Pittsburgh Cancer Institute | Pittsburgh | Pennsylvania | 15236 | - |
| Veterans Affairs Medical Center - Pittsburgh | Pittsburgh | Pennsylvania | 15240 | - |
| CCOP - MainLine Health | Wynnewood | Pennsylvania | 19096 | - |
| CCOP - Sioux Community Cancer Consortium | Sioux Falls | South Dakota | 57104 | - |
| Vanderbilt-Ingram Cancer Center at Vanderbilt Medical Center | Nashville | Tennessee | 37232-6307 | - |
| Veterans Affairs Medical Center - Tennessee Valley Healthcare System - Nashville Campus | Nashville | Tennessee | 37212-2637 | - |
| CCOP - Scott and White Hospital | Temple | Texas | 76508 | - |
| CCOP - St. Vincent Hospital Cancer Center, Green Bay | Green Bay | Wisconsin | 54301 | - |
| University of Wisconsin Comprehensive Cancer Center | Madison | Wisconsin | 53792-0001 | - |
| Veterans Affairs Medical Center - Madison | Madison | Wisconsin | 53705 | - |
| CCOP - Marshfield Clinic Research Foundation | Marshfield | Wisconsin | 54449 | - |
| Medical College of Wisconsin Cancer Center | Milwaukee | Wisconsin | 53226-3596 | - |
| Veterans Affairs Medical Center - Milwaukee (Zablocki) | Milwaukee | Wisconsin | 53295 | - |