| Alaska Regional Hospital Cancer Center | Anchorage | Alaska | 99508 | - |
| Fairbanks Cancer Treatment Center at Fairbanks Memorial Hospital | Fairbanks | Alaska | 99701 | - |
| Hembree Mercy Cancer Center at St. Edward Mercy Medical Center | Fort Smith | Arkansas | 72903 | - |
| Arkansas Cancer Research Center at University of Arkansas for Medical Sciences | Little Rock | Arkansas | 72205 | - |
| Alta Bates Summit Comprehensive Cancer Center | Berkeley | California | 94704 | - |
| Peninsula Medical Center | Burlingame | California | 94010 | - |
| Marin Cancer Institute at Marin General Hospital | Greenbrae | California | 94904 | - |
| Sutter Health - Western Division Cancer Research Group | Greenbrae | California | 94904 | - |
| Desert Regional Medical Center Comprehensive Cancer Center | Palm Springs | California | 92262 | - |
| University of California Davis Cancer Center | Sacramento | California | 95817 | - |
| California Pacific Medical Center - California Campus | San Francisco | California | 94118 | - |
| Stanford Cancer Center | Stanford | California | 94305-5824 | - |
| Sutter Solano Medical Center | Vallejo | California | 94589 | - |
| Helen and Harry Gray Cancer Center at Hartford Hospital | Hartford | Connecticut | 06102-5037 | - |
| Lombardi Comprehensive Cancer Center at Georgetown University Medical Center | Washington D.C. | District of Columbia | 20007 | - |
| Center for Cancer Care and Research at Watson Clinic, LLP | Lakeland | Florida | 33805 | - |
| Sacred Heart Cancer Center at Sacred Heart Hospital | Pensacola | Florida | 32504 | - |
| West Florida Cancer Institute at West Florida Hospital - Pensacola | Pensacola | Florida | 32514 | - |
| CCOP - Atlanta Regional | Atlanta | Georgia | 30342 | - |
| Northside Hospital Cancer Center | Atlanta | Georgia | 30342-1611 | - |
| Piedmont Hospital | Atlanta | Georgia | 30309 | - |
| Saint Joseph's Hospital of Atlanta | Atlanta | Georgia | 30342-1701 | - |
| WellStar Cobb Hospital | Austell | Georgia | 30106 | - |
| Charles B. Eberhart Cancer Center at DeKalb Medical Center | Decatur | Georgia | 30033 | - |
| Dwight David Eisenhower Army Medical Center | Fort Gordon | Georgia | 30905-5650 | - |
| Northeast Georgia Medical Center | Gainesville | Georgia | 30501 | - |
| Gwinnett Medical Center | Lawrenceville | Georgia | 30045 | - |
| Kennestone Cancer Center at Wellstar Kennestone Hospital | Marietta | Georgia | 30060 | - |
| Southern Regional Medical Center | Riverdale | Georgia | 30274-2600 | - |
| Pearlman Comprehensive Cancer Center at South Georgia Medical Center | Valdosta | Georgia | 31603 | - |
| Tripler Army Medical Center | Honolulu | Hawaii | 96859 | - |
| Mountain States Tumor Institute at St. Luke's Regional Medical Center | Boise | Idaho | 83712 | - |
| Saint Alphonsus Cancer Care Center at Saint Alphonsus Regional Medical Center | Boise | Idaho | 83706 | - |
| Saint Anthony's Hospital at Saint Anthony's Health Center | Alton | Illinois | 62002 | - |
| Rush-Copley Cancer Care Center | Aurora | Illinois | 60504 | - |
| St. Joseph Medical Center | Bloomington | Illinois | 61701 | - |
| Graham Hospital | Canton | Illinois | 61520 | - |
| Memorial Hospital | Carthage | Illinois | 62321 | - |
| University of Chicago Cancer Research Center | Chicago | Illinois | 60637-1470 | - |
| University of Illinois Cancer Center | Chicago | Illinois | 60612-7243 | - |
| Decatur Memorial Hospital Cancer Care Institute | Decatur | Illinois | 62526 | - |
| Eureka Community Hospital | Eureka | Illinois | 61530 | - |
| Galesburg Clinic, PC | Galesburg | Illinois | 61401 | - |
| Galesburg Cottage Hospital | Galesburg | Illinois | 61401 | - |
| Mason District Hospital | Havana | Illinois | 62644 | - |
| Veterans Affairs Medical Center - Hines | Hines | Illinois | 60141 | - |
| Hopedale Medical Complex | Hopedale | Illinois | 61747 | - |
| Joliet Oncology-Hematology Associates, Limited - West | Joliet | Illinois | 60435 | - |
| McDonough District Hospital | Macomb | Illinois | 61455 | - |
| Cardinal Bernardin Cancer Center at Loyola University Medical Center | Maywood | Illinois | 60153 | - |
| Good Samaritan Regional Health Center | Mount Vernon | Illinois | 62864 | - |
| Edward Hospital Cancer Center | Naperville | Illinois | 60540 | - |
| BroMenn Regional Medical Center | Normal | Illinois | 61761 | - |
| Community Cancer Center | Normal | Illinois | 61761 | - |
| Community Hospital of Ottawa | Ottawa | Illinois | 61350 | - |
| Oncology Hematology Associates of Central Illinois, PC - Ottawa | Ottawa | Illinois | 61350 | - |
| Cancer Treatment Center at Pekin Hospital | Pekin | Illinois | 61554 | - |
| CCOP - Illinois Oncology Research Association | Peoria | Illinois | 61615 | - |
| Methodist Medical Center of Illinois | Peoria | Illinois | 61636 | - |
| Oncology Hematology Associates of Central Illinois, PC - Peoria | Peoria | Illinois | 61615 | - |
| OSF St. Francis Medical Center | Peoria | Illinois | 61637 | - |
| Proctor Hospital | Peoria | Illinois | 61614 | - |
| Illinois Valley Community Hospital | Peru | Illinois | 61354 | - |
| Perry Memorial Hospital | Princeton | Illinois | 61356 | - |
| St. Margaret's Hospital | Spring Valley | Illinois | 61362 | - |
| Regional Cancer Center at Memorial Medical Center | Springfield | Illinois | 62781-0001 | - |
| Carle Cancer Center at Carle Foundation Hospital | Urbana | Illinois | 61801 | - |
| CCOP - Carle Cancer Center | Urbana | Illinois | 61801 | - |
| St. Francis Hospital and Health Centers - Beech Grove Campus | Beech Grove | Indiana | 46107 | - |
| Elkhart General Hospital | Elkhart | Indiana | 46515 | - |
| Howard Community Hospital | Kokomo | Indiana | 46904 | - |
| Center for Cancer Therapy at LaPorte Hospital and Health Services | La Porte | Indiana | 46350 | - |
| Saint Anthony Memorial Health Centers | Michigan City | Indiana | 46360 | - |
| Reid Hospital & Health Care Services | Richmond | Indiana | 47374 | - |
| CCOP - Northern Indiana CR Consortium | South Bend | Indiana | 46601 | - |
| Memorial Hospital of South Bend | South Bend | Indiana | 46601 | - |
| Saint Joseph Regional Medical Center | South Bend | Indiana | 46617 | - |
| Mercy Medical Center - Sioux City | Sioux City | Iowa | 51104 | - |
| Siouxland Hematology-Oncology Associates, LLP | Sioux City | Iowa | 51101 | - |
| St. Luke's Regional Medical Center | Sioux City | Iowa | 51104 | - |
| Cancer Center of Kansas, PA - Chanute | Chanute | Kansas | 66720 | - |
| Cancer Center of Kansas, PA - Dodge City | Dodge City | Kansas | 67801 | - |
| Cancer Center of Kansas, PA - El Dorado | El Dorado | Kansas | 67042 | - |
| Cancer Center of Kansas-Independence | Independence | Kansas | 67301 | - |
| Providence Medical Center | Kansas City | Kansas | 66112 | - |
| Cancer Center of Kansas, PA - Kingman | Kingman | Kansas | 67068 | - |
| Lawrence Memorial Hospital | Lawrence | Kansas | 66044 | - |
| Southwest Medical Center | Liberal | Kansas | 67901 | - |
| Cancer Center of Kansas, PA - Newton | Newton | Kansas | 67114 | - |
| Johnson County Radiation Therapy | Overland Park | Kansas | 66210 | - |
| Menorah Medical Center | Overland Park | Kansas | 66209 | - |
| Cancer Center of Kansas, PA - Parsons | Parsons | Kansas | 67357 | - |
| Cancer Center of Kansas, PA - Pratt | Pratt | Kansas | 67124 | - |
| Cancer Center of Kansas, PA - Salina | Salina | Kansas | 67042 | - |
| Tammy Walker Cancer Center at Salina Regional Health Center | Salina | Kansas | 67401 | - |
| Shawnee Mission Medical Center | Shawnee Mission | Kansas | 66204 | - |
| Cotton-O'Neil Cancer Center | Topeka | Kansas | 66606 | - |
| Cancer Center of Kansas, PA - Wellington | Wellington | Kansas | 67152 | - |
| Associates in Womens Health, PA - North Review | Wichita | Kansas | 67208 | - |
| Cancer Center of Kansas, PA - Medical Arts Tower | Wichita | Kansas | 67208 | - |
| Cancer Center of Kansas, PA - Wichita | Wichita | Kansas | 67214 | - |
| CCOP - Wichita | Wichita | Kansas | 67214 | - |
| Via Christi Cancer Center at Via Christi Regional Medical Center | Wichita | Kansas | 67214 | - |
| Wesley Medical Center | Wichita | Kansas | 67214 | - |
| Cancer Center of Kansas, PA - Winfield | Winfield | Kansas | 67156 | - |
| Alvin and Lois Lapidus Cancer Institute at Sinai Hospital | Baltimore | Maryland | 21215 | - |
| Greenebaum Cancer Center at University of Maryland Medical Center | Baltimore | Maryland | 21201 | - |
| Lahey Clinic Medical Center - Burlington | Burlington | Massachusetts | 01805 | - |
| Berkshire Hematology Oncology, PC | Pittsfield | Massachusetts | 01201 | - |
| University of Michigan Comprehensive Cancer Center | Ann Arbor | Michigan | 48109-0942 | - |
| Battle Creek Health System Cancer Care Center | Battle Creek | Michigan | 49017 | - |
| Bay Regional Medical Center | Bay City | Michigan | 48708 | - |
| Mecosta County Medical Center | Big Rapids | Michigan | 49307 | - |
| Barbara Ann Karmanos Cancer Institute | Detroit | Michigan | 48201-1379 | - |
| Josephine Ford Cancer Center at Henry Ford Hospital | Detroit | Michigan | 48202 | - |
| Butterworth Hospital at Spectrum Health | Grand Rapids | Michigan | 49503 | - |
| CCOP - Grand Rapids | Grand Rapids | Michigan | 49503 | - |
| Lacks Cancer Center at Saint Mary's Health Care | Grand Rapids | Michigan | 49503 | - |
| Holland Community Hospital | Holland | Michigan | 49423 | - |
| Borgess Medical Center | Kalamazoo | Michigan | 49001 | - |
| Bronson Methodist Hospital | Kalamazoo | Michigan | 49007 | - |
| West Michigan Cancer Center | Kalamazoo | Michigan | 49007-3731 | - |
| Hackley Hospital | Muskegon | Michigan | 49442 | - |
| Lakeland Regional Cancer Care Center - St. Joseph | Saint Joseph | Michigan | 49085 | - |
| Oncology Care Associates, PLLC | Saint Joseph | Michigan | 49085 | - |
| Munson Medical Center | Traverse City | Michigan | 49684 | - |
| Metro Health Hospital | Wyoming | Michigan | 49519 | - |
| University of Mississippi Cancer Clinic | Jackson | Mississippi | 39216 | - |
| Saint Francis Medical Center | Cape Girardeau | Missouri | 63703 | - |
| Saint Luke's Hospital | Chesterfield | Missouri | 63017 | - |
| Ellis Fischel Cancer Center at University of Missouri - Columbia | Columbia | Missouri | 65203 | - |
| Veterans Affairs Medical Center - Columbia (Truman Memorial) | Columbia | Missouri | 65201 | - |
| Southeast Missouri Regional Cancer Center at Southeast Missouri Hospital | Gape Girardeau | Missouri | 63701 | - |
| Independence Regional Health Center | Independence | Missouri | 64050 | - |
| Freeman Cancer Institute at Freeman Health System | Joplin | Missouri | 64804 | - |
| St. John's Regional Medical Center | Joplin | Missouri | 64804 | - |
| CCOP - Kansas City | Kansas City | Missouri | 64131 | - |
| Kansas City Cancer Center at St. Joseph's Medical Mall | Kansas City | Missouri | 64114 | - |
| North Kansas City Hospital | Kansas City | Missouri | 64116 | - |
| Parvin Radiation Oncology | Kansas City | Missouri | 64116 | - |
| Radiation Oncology Associates of Kansas City at Northland Radiation Oncology Center | Kansas City | Missouri | 64154 | - |
| Saint Luke's Cancer Institute at Saint Luke's Hospital | Kansas City | Missouri | 64111 | - |
| St. Joseph Medical Center | Kansas City | Missouri | 64114 | - |
| Truman Medical Center - Hospital Hill | Kansas City | Missouri | 64108 | - |
| Heartland Regional Medical Center | Saint Joseph | Missouri | 64506 | - |
| CCOP - Cancer Research for the Ozarks | Springfield | Missouri | 65802 | - |
| Hulston Cancer Center at Cox Medical Center South | Springfield | Missouri | 65807 | - |
| St. John's Regional Health Center | Springfield | Missouri | 65804 | - |
| CCOP - St. Louis-Cape Girardeau | St Louis | Missouri | 63141 | - |
| David C. Pratt Cancer Center at St. John's Mercy | St Louis | Missouri | 63141 | - |
| Midwest Hematology Oncology Group, Incorporated | St Louis | Missouri | 63109 | - |
| Siteman Cancer Center at Barnes-Jewish Hospital - Saint Louis | St Louis | Missouri | 63110 | - |
| Billings Clinic - Downtown | Billings | Montana | 59107-7000 | - |
| CCOP - Montana Cancer Consortium | Billings | Montana | 59101 | - |
| Hematology-Oncology Centers of the Northern Rockies - Billings | Billings | Montana | 59101 | - |
| Northern Rockies Radiation Oncology Center | Billings | Montana | 59101 | - |
| St. Vincent Healthcare Cancer Care Services | Billings | Montana | 59101 | - |
| Bozeman Deaconess Cancer Center | Bozeman | Montana | 59715 | - |
| St. James Healthcare Cancer Care | Butte | Montana | 59701 | - |
| - | Great Falls | Montana | 59405 | - |
| Big Sky Oncology | Great Falls | Montana | 59405-5309 | - |
| Great Falls Clinic - Main Facility | Great Falls | Montana | 59405 | - |
| Sletten Cancer Institute at Benefis Healthcare | Great Falls | Montana | 59405 | - |
| St. Peter's Hospital | Helena | Montana | 59601 | - |
| Glacier Oncology, PLLC | Kalispell | Montana | 59901 | - |
| Kalispell Medical Oncology at KRMC | Kalispell | Montana | 59901 | - |
| Kalispell Regional Medical Center | Kalispell | Montana | 59901 | - |
| Community Medical Center | Missoula | Montana | 59801 | - |
| Guardian Oncology and Center for Wellness | Missoula | Montana | 59804 | - |
| Montana Cancer Center at St. Patrick Hospital and Health Sciences Center | Missoula | Montana | 59807 | - |
| Montana Cancer Specialists at Montana Cancer Center | Missoula | Montana | 59807-7877 | - |
| Good Samaritan Cancer Center at Good Samaritan Hospital | Kearney | Nebraska | 68848-1990 | - |
| UNMC Eppley Cancer Center at the University of Nebraska Medical Center | Omaha | Nebraska | 68198-6805 | - |
| Roswell Park Cancer Institute | Buffalo | New York | 14263-0001 | - |
| Tucker Center for Cancer Care at Orange Regional Medical Center | Middletown | New York | 10940-4199 | - |
| New York Weill Cornell Cancer Center at Cornell University | New York | New York | 10021 | - |
| James P. Wilmot Cancer Center at University of Rochester Medical Center | Rochester | New York | 14642 | - |
| Lineberger Comprehensive Cancer Center at University of North Carolina - Chapel Hill | Chapel Hill | North Carolina | 27599-7295 | - |
| Duke Comprehensive Cancer Center | Durham | North Carolina | 27710 | - |
| Wayne Memorial Hospital, Incorporated | Goldsboro | North Carolina | 27534 | - |
| McDowell Cancer Center at Akron General Medical Center | Akron | Ohio | 44307 | - |
| Mary Rutan Hospital | Bellefontaine | Ohio | 43311 | - |
| Adena Regional Medical Center | Chillicothe | Ohio | 45601 | - |
| Charles M. Barrett Cancer Center at University Hospital | Cincinnati | Ohio | 45267 | - |
| Good Samaritan Hospital Cancer Treatment Center | Cincinnati | Ohio | 45220 | - |
| Cleveland Clinic Cancer Center at Fairview Hospital | Cleveland | Ohio | 44111 | - |
| Cleveland Clinic Taussig Cancer Center | Cleveland | Ohio | 44195 | - |
| CCOP - Columbus | Columbus | Ohio | 43215 | - |
| Doctors Hospital at Ohio Health | Columbus | Ohio | 43228 | - |
| Grant Medical Center Cancer Care | Columbus | Ohio | 43215 | - |
| Mount Carmel Health - West Hospital | Columbus | Ohio | 43222 | - |
| Riverside Methodist Hospital Cancer Care | Columbus | Ohio | 43214-3998 | - |
| CCOP - Dayton | Dayton | Ohio | 45429 | - |
| David L. Rike Cancer Center at Miami Valley Hospital | Dayton | Ohio | 45409 | - |
| Good Samaritan Hospital | Dayton | Ohio | 45406 | - |
| Grandview Hospital | Dayton | Ohio | 45405 | - |
| Samaritan North Cancer Care Center | Dayton | Ohio | 45415 | - |
| Veterans Affairs Medical Center - Dayton | Dayton | Ohio | 45428 | - |
| Grady Memorial Hospital | Delaware | Ohio | 43015 | - |
| Blanchard Valley Medical Associates | Findlay | Ohio | 45840 | - |
| Middletown Regional Hospital | Franklin | Ohio | 45005-1066 | - |
| Community Oncology Group at Cleveland Clinic Cancer Center | Independence | Ohio | 44131 | - |
| Charles F. Kettering Memorial Hospital | Kettering | Ohio | 45429 | - |
| Fairfield Medical Center | Lancaster | Ohio | 43130 | - |
| St. Rita's Medical Center | Lima | Ohio | 45801 | - |
| Strecker Cancer Center at Marietta Memorial Hospital | Marietta | Ohio | 45750 | - |
| Licking Memorial Cancer Care Program at Licking Memorial Hospital | Newark | Ohio | 43055 | - |
| Community Hospital of Springfield and Clark County | Springfield | Ohio | 45505 | - |
| Mercy Medical Center | Springfield | Ohio | 45504 | - |
| UVMC Cancer Care Center at Upper Valley Medical Center | Troy | Ohio | 45373-1300 | - |
| Mount Carmel St. Ann's Cancer Center | Westerville | Ohio | 43081 | - |
| Clinton Memorial Hospital | Wilmington | Ohio | 45177 | - |
| Cleveland Clinic - Wooster | Wooster | Ohio | 44691 | - |
| Ruth G. McMillan Cancer Center at Greene Memorial Hospital | Xenia | Ohio | 45385 | - |
| Genesis - Good Samaritan Hospital | Zanesville | Ohio | 43701 | - |
| Legacy Mount Hood Medical Center | Gresham | Oregon | 97030 | - |
| Providence Milwaukie Hospital | Milwaukie | Oregon | 97222 | - |
| Adventist Medical Center | Portland | Oregon | 97216 | - |
| CCOP - Columbia River Oncology Program | Portland | Oregon | 97225 | - |
| Legacy Emanuel Hospital and Health Center and Children's Hospital | Portland | Oregon | 97227 | - |
| Legacy Good Samaritan Hospital & Comprehensive Cancer Center | Portland | Oregon | 97210 | - |
| Providence Cancer Center at Providence Portland Medical Center | Portland | Oregon | 97213-2967 | - |
| Providence St. Vincent Medical Center | Portland | Oregon | 97225 | - |
| Legacy Meridian Park Hospital | Tualatin | Oregon | 97062 | - |
| Hollings Cancer Center at Medical University of South Carolina | Charleston | South Carolina | 29425 | - |
| Roper St. Francis Cancer Center at Roper Hospital | Charleston | South Carolina | 29401 | - |
| Palmetto Health South Carolina Cancer Center | Columbia | South Carolina | 29203 | - |
| CCOP - Greenville | Greenville | South Carolina | 29615 | - |
| Joe Arrington Cancer Research and Treatment Center | Lubbock | Texas | 79410-1894 | - |
| UMC Southwest Cancer and Research Center | Lubbock | Texas | 79415-3364 | - |
| Huntsman Cancer Institute at University of Utah | Salt Lake City | Utah | 84112 | - |
| Lynchburg Hematology-Oncology Clinic | Lynchburg | Virginia | 24501 | - |
| St. Joseph Cancer Center | Bellingham | Washington | 98225 | - |
| Olympic Hematology and Oncology | Bremerton | Washington | 98310 | - |
| St. Francis Hospital | Federal Way | Washington | 98003 | - |
| Columbia Basin Hematology | Kennewick | Washington | 99336 | - |
| Cascade Cancer Center at Evergreen Hospital Medical Center | Kirkland | Washington | 98033 | - |
| Olympic Medical Center | Port Angeles | Washington | 98362 | - |
| Good Samaritan Cancer Center | Puyallup | Washington | 98372 | - |
| Valley Medical Center | Renton | Washington | 98055 | - |
| CCOP - Virginia Mason Research Center | Seattle | Washington | 98101 | - |
| Fred Hutchinson Cancer Research Center | Seattle | Washington | 98104 | - |
| Group Health Central Hospital | Seattle | Washington | 98112 | - |
| Harborview Medical Center | Seattle | Washington | 98104 | - |
| Minor and James Medical, PLLC | Seattle | Washington | 98104 | - |
| Polyclinic First Hill | Seattle | Washington | 98122 | - |
| Swedish Cancer Institute at Swedish Medical Center - First Hill Campus | Seattle | Washington | 98122-4307 | - |
| University Cancer Center at University of Washington Medical Center | Seattle | Washington | 98195-6043 | - |
| Cancer Care Northwest - Spokane South | Spokane | Washington | 99202 | - |
| Allenmore Hospital | Tacoma | Washington | 98405 | - |
| CCOP - Northwest | Tacoma | Washington | 98405 | - |
| Franciscan Cancer Center at St. Joseph Medical Center | Tacoma | Washington | 98405-3004 | - |
| MultiCare Regional Cancer Center at Tacoma General Hospital | Tacoma | Washington | 98405 | - |
| St. Clare Hospital | Tacoma | Washington | 98499 | - |
| Southwest Washington Medical Center Cancer Center | Vancouver | Washington | 98668 | - |
| Wenatchee Valley Medical Center | Wenatchee | Washington | 98801-2028 | - |
| North Star Lodge Cancer Center at Yakima Valley Memorial Hospital | Yakima | Washington | 98902 | - |
| Schiffler Cancer Center at Wheeling Hospital | Wheeling | West Virginia | 26003 | - |
| Welch Cancer Center at Sheridan Memorial Hospital | Sheridan | Wyoming | 82801 | - |