| University of Alabama at Birmingham Comprehensive Cancer Center | Birmingham | Alabama | 35294-3300 | - |
| Comprehensive Cancer Institute of Huntsville | Huntsville | Alabama | 35801 | - |
| Huntsville Hospital System | Huntsville | Alabama | 35807 | - |
| MBCCOP - Gulf Coast | Mobile | Alabama | 36688 | - |
| Alabama Oncology, LLC | Montgomery | Alabama | 36106-3657 | - |
| Radiation Oncology Associates of West Alabama | Tuscaloosa | Alabama | 35401 | - |
| Foundation for Cancer Research and Education | Phoenix | Arizona | 85013 | - |
| Mount Diablo Medical Center | Concord | California | 94524-4110 | - |
| City of Hope Comprehensive Cancer Center | Duarte | California | 91010-3000 | - |
| California Cancer Center | Fresno | California | 93729-5100 | - |
| Saint Agnes Cancer Center | Fresno | California | 93720 | - |
| Sutter Health West Cancer Research Group | Greenbrae | California | 94904 | - |
| Loma Linda University Medical Center | Loma Linda | California | 92354 | - |
| Veterans Affairs Medical Center - Long Beach | Long Beach | California | 90822 | - |
| Jonsson Comprehensive Cancer Center, UCLA | Los Angeles | California | 90025-1781 | - |
| USC/Norris Comprehensive Cancer Center and Hospital | Los Angeles | California | 90033-0804 | - |
| CCOP - Bay Area Tumor Institute | Oakland | California | 94609-3305 | - |
| Huntington Cancer Center | Pasadena | California | 91105 | - |
| Cancer Care Center | Pomona | California | 91767 | - |
| Radiation Oncology Center - Sacramento | Sacramento | California | 95816 | - |
| Radiation Medical Group, Inc. | San Diego | California | 92101 | - |
| UCSF Cancer Center and Cancer Research Institute | San Francisco | California | 94143-0128 | - |
| O'Connor Hospital | San Jose | California | 95128 | - |
| CCOP - Santa Rosa Memorial Hospital | Santa Rosa | California | 95403 | - |
| David Grant Medical Center | Travis Air Force Base | California | 94535 | - |
| Memorial Hospital Cancer Center | Colorado Springs | Colorado | 80909 | - |
| University of Colorado Cancer Center | Denver | Colorado | 80010 | - |
| Saint Mary's Hospital and Medical Center | Grand Junction | Colorado | 81502-1628 | - |
| Hospital of St. Raphael | New Haven | Connecticut | 06511 | - |
| CCOP - Christiana Care Health Services | Wilmington | Delaware | 19899 | - |
| University of Florida Health Science Center | Gainesville | Florida | 32610-0385 | - |
| Florida Radiation Oncology Group | Jacksonville | Florida | 32207 | - |
| Health First Holmes Regional Medical Center | Melbourne | Florida | 32901-3276 | - |
| Baptist Hospital of Miami | Miami | Florida | 33256-2110 | - |
| Sylvester Cancer Center, University of Miami | Miami | Florida | 33136 | - |
| Veterans Affairs Medical Center - Miami | Miami | Florida | 33125 | - |
| CCOP - Mount Sinai Medical Center | Miami Beach | Florida | 33140 | - |
| MD Anderson Cancer Center Orlando | Orlando | Florida | 32806 | - |
| Bay Medical Center | Panama City | Florida | 32401 | - |
| Gulf Coast Cancer Treatment Center | Panama City | Florida | 32405-4587 | - |
| Sarasota Radiation and Medical Oncology Center | Sarasota | Florida | 34233 | - |
| Tallahassee Memorial Healthcare | Tallahassee | Florida | 32308 | - |
| H. Lee Moffitt Cancer Center and Research Institute | Tampa | Florida | 33612-9497 | - |
| CCOP - Atlanta Regional | Atlanta | Georgia | 30342-1701 | - |
| Emory University Hospital - Atlanta | Atlanta | Georgia | 30322 | - |
| Medical Center/John B. Amos Community Cancer Center | Columbus | Georgia | 31901 | - |
| Regional Radiation Oncology Center at Rome | Rome | Georgia | 30165 | - |
| MBCCOP - Hawaii | Honolulu | Hawaii | 96813 | - |
| Northwest Community Hospital | Arlington Heights | Illinois | 60005 | - |
| Northwestern Memorial Hospital | Chicago | Illinois | 60611 | - |
| CCOP - Central Illinois | Decatur | Illinois | 62526 | - |
| Ingalls Memorial Hospital | Harvey | Illinois | 60426 | - |
| Loyola University Medical Center | Maywood | Illinois | 60153 | - |
| Lutheran General Cancer Care Center | Park Ridge | Illinois | 60068 | - |
| Methodist Medical Center of Illinois | Peoria | Illinois | 61636 | - |
| St. John's Medical Center | Anderson | Indiana | 46016 | - |
| Bloomington Hospital | Bloomington | Indiana | 47402 | - |
| Clarian Health Partners Inc. | Indianapolis | Indiana | 46206-1367 | - |
| Regional Cancer Center | Indianapolis | Indiana | 46219 | - |
| Veterans Affairs Medical Center - Indianapolis (Roudebush) | Indianapolis | Indiana | 46202 | - |
| Ball Memorial Hospital | Muncie | Indiana | 47303-3499 | - |
| CCOP - Northern Indiana CR Consortium | South Bend | Indiana | 46601 | - |
| Wendt Regional Cancer Center of Finley Hospital | Dubuque | Iowa | 52001 | - |
| Albert B. Chandler Medical Center, University of Kentucky | Lexington | Kentucky | 40536-0293 | - |
| Central Baptist Hospital | Lexington | Kentucky | 40503 | - |
| James Graham Brown Cancer Center | Louisville | Kentucky | 40202 | - |
| Louisville Radiation Oncology | Louisville | Kentucky | 40215 | - |
| Merle M. Mahr Cancer Center | Madisonville | Kentucky | 42431 | - |
| Mary Bird Perkins Cancer Center | Baton Rouge | Louisiana | 70809 | - |
| CCOP - Ochsner | New Orleans | Louisiana | 70121 | - |
| MBCCOP - LSU Health Sciences Center | New Orleans | Louisiana | 70112 | - |
| Tulane University School of Medicine | New Orleans | Louisiana | 70112-2699 | - |
| Maine Medical Center | Portland | Maine | 04102 | - |
| Anne Arundel Oncology Center | Annapolis | Maryland | 21401 | - |
| Greater Baltimore Medical Center and Cancer Center | Baltimore | Maryland | 21204 | - |
| Harbor Hospital Center | Baltimore | Maryland | 21215-1290 | - |
| Marlene and Stewart Greenebaum Cancer Center, University of Maryland | Baltimore | Maryland | 21201 | - |
| Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins | Baltimore | Maryland | 21231-2410 | - |
| Sinai Hospital of Baltimore | Baltimore | Maryland | 21215 | - |
| Peninsula Regional Medical Center | Salisbury | Maryland | 21801 | - |
| Dana-Farber Cancer Institute | Boston | Massachusetts | 02115 | - |
| Cape Cod Hospital | Hyannis | Massachusetts | 02601 | - |
| Veterans Affairs Medical Center - Boston (Jamaica Plain) | Jamaica Plain | Massachusetts | 02130 | - |
| CCOP - Ann Arbor Regional | Ann Arbor | Michigan | 48106 | - |
| University of Michigan Comprehensive Cancer Center | Ann Arbor | Michigan | 48109-0752 | - |
| Barbara Ann Karmanos Cancer Institute | Detroit | Michigan | 48201-1379 | - |
| Henry Ford Hospital | Detroit | Michigan | 48202 | - |
| Hurley Medical Center | Flint | Michigan | 48503 | - |
| McLaren Regional Cancer Center | Flint | Michigan | 48532-3685 | - |
| CCOP - Kalamazoo | Kalamazoo | Michigan | 49007-3731 | - |
| Marquette General Hospital | Marquette | Michigan | 49855 | - |
| MidMichigan Medical Center - Midland | Midland | Michigan | 48670 | - |
| CCOP - Beaumont | Royal Oak | Michigan | 48073-6769 | - |
| William Beaumont Hospital | Royal Oak | Michigan | 48073 | - |
| William Beaumont Hospital - Troy | Troy | Michigan | 48098 | - |
| Mayo Clinic Cancer Center | Rochester | Minnesota | 55905 | - |
| CCOP - Metro-Minnesota | Saint Louis Park | Minnesota | 55416 | - |
| Ellis Fischel Cancer Center - Columbia | Columbia | Missouri | 65203 | - |
| CCOP - Kansas City | Kansas City | Missouri | 64131 | - |
| Cancer Research for the Ozarks | Springfield | Missouri | 65807 | - |
| CCOP - Cancer Research for the Ozarks | Springfield | Missouri | 65807 | - |
| Mallinckrodt Institute of Radiology | St Louis | Missouri | 63108 | - |
| St. Louis University Health Sciences Center | St Louis | Missouri | 63110-0250 | - |
| CCOP - Montana Cancer Consortium | Billings | Montana | 59101 | - |
| CCOP - Missouri Valley Cancer Consortium | Omaha | Nebraska | 68106 | - |
| Methodist Cancer Center - Omaha | Omaha | Nebraska | 68114 | - |
| Nebraska Health System | Omaha | Nebraska | 68198-7460 | - |
| CCOP - Southern Nevada Cancer Research Foundation | Las Vegas | Nevada | 89106 | - |
| Norris Cotton Cancer Center | Lebanon | New Hampshire | 03756-0002 | - |
| Elliot Regional Cancer Center | Manchester | New Hampshire | 03103 | - |
| Veterans Affairs Medical Center - East Orange | East Orange | New Jersey | 07019 | - |
| John F. Kennedy Medical Center | Edison | New Jersey | 08818 | - |
| Trinitas Hospital - Jersey Street Campus | Elizabeth | New Jersey | 07201 | - |
| Monmouth Medical Center | Long Branch | New Jersey | 07740-6395 | - |
| South Jersey Regional Cancer Center | Millville | New Jersey | 08332 | - |
| Fox Chase Cancer Center at Virtua Memorial Hospital Burlington County | Mount Holly | New Jersey | 08060 | - |
| Cancer Institute of New Jersey | New Brunswick | New Jersey | 38103-2807 | - |
| Newark Beth Israel Medical Center | Newark | New Jersey | 07112 | - |
| Atlantic City Medical Center | Pomona | New Jersey | 08240 | - |
| Valley Hospital | Ridgewood | New Jersey | 07450 | - |
| Community Medical Center | Toms River | New Jersey | 08755 | - |
| St. Francis Medical Center | Trenton | New Jersey | 08629 | - |
| Associated Radiologists, P.A. | Warren Township | New Jersey | 07059 | - |
| Radiation Oncology Associates of Albuquerque | Albuquerque | New Mexico | 87109 | - |
| Cancer Center of Albany Medical Center | Albany | New York | 12208 | - |
| New York Methodist Hospital | Brooklyn | New York | 11215 | - |
| State University of New York Health Science Center at Brooklyn | Brooklyn | New York | 11203 | - |
| Roswell Park Cancer Institute | Buffalo | New York | 14263-0001 | - |
| Finger Lakes Radiation Oncology Center | Clifton Springs | New York | 14432 | - |
| CCOP - North Shore University Hospital | Manhasset | New York | 11030 | - |
| Herbert Irving Comprehensive Cancer Center | New York | New York | 10032 | - |
| Champlain Valley Physicians Hospital Medical Center | Plattsburgh | New York | 12901 | - |
| Vassar Brothers Medical Center | Poughkeepsie | New York | 12601 | - |
| James P. Wilmot Cancer Center | Rochester | New York | 14642 | - |
| CCOP - Syracuse Hematology-Oncology Associates of Central New York, P.C. | Syracuse | New York | 13217 | - |
| Riverhill Radiation Oncology | Yonkers | New York | 10701 | - |
| Lineberger Comprehensive Cancer Center, UNC | Chapel Hill | North Carolina | 27599-7295 | - |
| Northeast Medical Center | Concord | North Carolina | 28025 | - |
| East Carolina University School of Medicine | Greenville | North Carolina | 27858-4354 | - |
| CCOP - Southeast Cancer Control Consortium | Winston-Salem | North Carolina | 27104-4241 | - |
| Comprehensive Cancer Center at Wake Forest University | Winston-Salem | North Carolina | 27157-1082 | - |
| Trinity Cancer Care Center | Minot | North Dakota | 58701 | - |
| Akron City Hospital | Akron | Ohio | 44304 | - |
| Akron General Medical Center | Akron | Ohio | 44302 | - |
| Barrett Cancer Center, The University Hospital | Cincinnati | Ohio | 45267-0502 | - |
| Christ Hospital | Cincinnati | Ohio | 45219 | - |
| Cleveland Clinic Taussig Cancer Center | Cleveland | Ohio | 44195 | - |
| Ireland Cancer Center | Cleveland | Ohio | 44106-5065 | - |
| University Hospitals of Cleveland | Cleveland | Ohio | 44106 | - |
| Arthur G. James Cancer Hospital - Ohio State University | Columbus | Ohio | 43210-1240 | - |
| CCOP - Columbus | Columbus | Ohio | 43206 | - |
| CCOP - Dayton | Kettering | Ohio | 45429 | - |
| CCOP - Toledo Community Hospital Oncology Program | Toledo | Ohio | 43623-3456 | - |
| St. Anthony Hospital | Oklahoma City | Oklahoma | 73101 | - |
| University of Oklahoma Health Sciences Center | Oklahoma City | Oklahoma | 73104 | - |
| CCOP - Oklahoma | Tulsa | Oklahoma | 74136 | - |
| St. John Health System | Tulsa | Oklahoma | 74104 | - |
| CCOP - Columbia River Program | Portland | Oregon | 97225 | - |
| Lehigh Valley Hospital | Allentown | Pennsylvania | 18105 | - |
| St. Luke's Hospital Cancer Center | Bethlehem | Pennsylvania | 18015 | - |
| Geisinger Medical Center | Danville | Pennsylvania | 17822-2001 | - |
| Mercy Fitzgerald Hospital | Darby | Pennsylvania | 19023 | - |
| Delaware County Memorial Hospital | Drexel Hill | Pennsylvania | 19026 | - |
| Pocono Cancer Center | East Stroudsburg | Pennsylvania | 18301 | - |
| Milton S. Hershey Medical Center | Hershey | Pennsylvania | 17033-0850 | - |
| Albert Einstein Cancer Center | Philadelphia | Pennsylvania | 19141-3098 | - |
| Fox Chase Cancer Center | Philadelphia | Pennsylvania | 19111 | - |
| Kimmel Cancer Center of Thomas Jefferson University - Philadelphia | Philadelphia | Pennsylvania | 19107-5541 | - |
| University of Pennsylvania Cancer Center | Philadelphia | Pennsylvania | 19104-4283 | - |
| Veterans Affairs Medical Center - Philadelphia | Philadelphia | Pennsylvania | 19104 | - |
| Mercy Hospital of Pittsburgh | Pittsburgh | Pennsylvania | 15219 | - |
| University of Pittsburgh Cancer Institute | Pittsburgh | Pennsylvania | 15213-3489 | - |
| Western Pennsylvania Hospital | Pittsburgh | Pennsylvania | 15224 | - |
| Reading Hospital and Medical Center | Reading | Pennsylvania | 19612-6052 | - |
| Mercy Hospital Cancer Center - Scranton | Scranton | Pennsylvania | 18501 | - |
| Wilkes Barre General Hospital | Wilkes-Barre | Pennsylvania | 18764 | - |
| York Hospital | York | Pennsylvania | 17315 | - |
| Roger Williams Medical Center/BUSM | Providence | Rhode Island | 02908-4735 | - |
| CCOP - Greenville | Greenville | South Carolina | 29615 | - |
| CCOP - Upstate Carolina | Spartanburg | South Carolina | 29303 | - |
| Rapid City Regional Hospital | Rapid City | South Dakota | 57709 | - |
| Jackson-Madison County General Hospital | Jackson | Tennessee | 38301-3956 | - |
| University of Tennessee Cancer Institute | Memphis | Tennessee | 38103 | - |
| Vanderbilt-Ingram Cancer Center | Nashville | Tennessee | 37232-5671 | - |
| Harrington Cancer Center | Amarillo | Texas | 79106 | - |
| University of Texas Medical Branch | Galveston | Texas | 77555-0209 | - |
| University of Texas - MD Anderson Cancer Center | Houston | Texas | 77030-4009 | - |
| Wilford Hall Medical Center | Lackland Air Force Base | Texas | 78236-5300 | - |
| Joe Arrington Cancer Research and Treatment Center | Lubbock | Texas | 79410-1894 | - |
| Bayshore Medical Center | Pasadena | Texas | 77504 | - |
| Latter Day Saints Hospital | Salt Lake City | Utah | 84143 | - |
| University of Utah Health Sciences Center | Salt Lake City | Utah | 84132 | - |
| Dixie Regional Medical Center | St. George | Utah | 84770 | - |
| Vermont Cancer Center | Burlington | Vermont | 05401 | - |
| Cancer Center at the University of Virginia | Charlottesville | Virginia | 22908 | - |
| RMH Regional Cancer Center | Harrisonburg | Virginia | 22801 | - |
| Naval Medical Center, Portsmouth | Portsmouth | Virginia | 23708-2197 | - |
| Bon-Secours - St. Mary's Hospital | Richmond | Virginia | 23226 | - |
| Massey Cancer Center | Richmond | Virginia | 23298-0037 | - |
| Virginia Mason Medical Center | Seattle | Washington | 98111 | - |
| Deaconess Medical Center | Spokane | Washington | 99210-0248 | - |
| Yakima Valley Memorial Hospital | Yakima | Washington | 98902 | - |
| Schiffler Cancer Center | Wheeling | West Virginia | 26003 | - |
| CCOP - St. Vincent Hospital Cancer Center, Green Bay | Green Bay | Wisconsin | 54301 | - |
| St. Vincent Hospital | Green Bay | Wisconsin | 54307-3508 | - |
| Gundersen Lutheran Medical Foundation | La Crosse | Wisconsin | 54601 | - |
| Southern Wisconsin Radiotherapy Center | Madison | Wisconsin | 53713 | - |
| University of Wisconsin Comprehensive Cancer Center | Madison | Wisconsin | 53792 | - |
| Marshfield Clinic | Marshfield | Wisconsin | 54449 | - |
| Community Memorial Hospital | Menomonee Falls | Wisconsin | 53051 | - |
| Columbia Hospital | Milwaukee | Wisconsin | 53211 | - |
| Medical College of Wisconsin | Milwaukee | Wisconsin | 53226 | - |
| St. Luke's Medical Center | Milwaukee | Wisconsin | 53215 | - |
| Veterans Affairs Medical Center - Milwaukee (Zablocki) | Milwaukee | Wisconsin | 53295 | - |
| All Saints Cancer Center | Racine | Wisconsin | 53405 | - |
| Waukesha Memorial Hospital | Waukesha | Wisconsin | 53188 | - |