| Alaska Breast Care and Surgery LLC | Anchorage | Alaska | 99508 | - |
| Alaska Women's Cancer Care | Anchorage | Alaska | 99508 | - |
| Anchorage Associates in Radiation Medicine | Anchorage | Alaska | 98508 | - |
| Katmai Oncology Group | Anchorage | Alaska | 99508 | - |
| Providence Alaska Medical Center | Anchorage | Alaska | 99508 | - |
| The University of Arizona Medical Center-University Campus | Tucson | Arizona | 85724 | - |
| University of Arizona Cancer Center-North Campus | Tucson | Arizona | 85719 | - |
| Sutter Auburn Faith Hospital | Auburn | California | 95602 | - |
| Sutter Cancer Centers Radiation Oncology Services-Auburn | Auburn | California | 95603 | - |
| Alta Bates Summit Medical Center-Herrick Campus | Berkeley | California | 94704 | - |
| Providence Saint Joseph Medical Center/Disney Family Cancer Center | Burbank | California | 91505 | - |
| Mills - Peninsula Hospitals | Burlingame | California | 94010 | - |
| Sutter Cancer Centers Radiation Oncology Services-Cameron Park | Cameron Park | California | 95682 | - |
| Eden Hospital Medical Center | Castro Valley | California | 94546 | - |
| City of Hope Corona | Corona | California | 92879 | - |
| UC Irvine Health Cancer Center-Newport | Costa Mesa | California | 92627 | - |
| Sutter Davis Hospital | Davis | California | 95616 | - |
| City of Hope Comprehensive Cancer Center | Duarte | California | 91010 | - |
| Los Angeles County-USC Medical Center | Los Angeles | California | 90033 | - |
| USC / Norris Comprehensive Cancer Center | Los Angeles | California | 90033 | - |
| Fremont - Rideout Cancer Center | Marysville | California | 95901 | - |
| Memorial Medical Center | Modesto | California | 95355 | - |
| Palo Alto Medical Foundation-Camino Division | Mountain View | California | 94040 | - |
| Palo Alto Medical Foundation-Gynecologic Oncology | Mountain View | California | 94040 | - |
| Sutter Cancer Research Consortium | Novato | California | 94945 | - |
| UC Irvine Health/Chao Family Comprehensive Cancer Center | Orange | California | 92868 | - |
| Palo Alto Medical Foundation Health Care | Palo Alto | California | 94301 | - |
| Sutter Cancer Centers Radiation Oncology Services-Roseville | Roseville | California | 95661 | - |
| Sutter Roseville Medical Center | Roseville | California | 95661 | - |
| Sutter General Hospital | Sacramento | California | 95816 | - |
| University of California Davis Comprehensive Cancer Center | Sacramento | California | 95817 | - |
| California Pacific Medical Center-Pacific Campus | San Francisco | California | 94115 | - |
| Palo Alto Medical Foundation-Santa Cruz | Santa Cruz | California | 95065 | - |
| Sutter Pacific Medical Foundation | Santa Rosa | California | 95403 | - |
| Palo Alto Medical Foundation-Sunnyvale | Sunnyvale | California | 94086 | - |
| Gene Upshaw Memorial Tahoe Forest Cancer Center | Truckee | California | 96161 | - |
| Sutter Cancer Centers Radiation Oncology Services-Vacaville | Vacaville | California | 95687 | - |
| Sutter Solano Medical Center/Cancer Center | Vallejo | California | 94589 | - |
| City of Hope West Covina | West Covina | California | 91790 | - |
| Smilow Cancer Hospital-Derby Care Center | Derby | Connecticut | 06418 | - |
| Smilow Cancer Hospital Care Center-Fairfield | Fairfield | Connecticut | 06824 | - |
| Medical Oncology and Hematology Group PC-Guilford | Guilford | Connecticut | 06437 | - |
| Smilow Cancer Hospital Care Center at Saint Francis | Hartford | Connecticut | 06105 | - |
| Smilow Cancer Center/Yale-New Haven Hospital | New Haven | Connecticut | 06510 | - |
| Yale University | New Haven | Connecticut | 06520 | - |
| Yale-New Haven Hospital North Haven Medical Center | North Haven | Connecticut | 06473 | - |
| Smilow Cancer Hospital-Orange Care Center | Orange | Connecticut | 06477 | - |
| Charlotte Hungerford Hospital Center for Cancer Care | Torrington | Connecticut | 06790 | - |
| Smilow Cancer Hospital Care Center-Trumbull | Trumbull | Connecticut | 06611 | - |
| Smilow Cancer Hospital-Waterbury Care Center | Waterbury | Connecticut | 06708 | - |
| Saint Luke's Mountain States Tumor Institute | Boise | Idaho | 83712 | - |
| Saint Luke's Mountain States Tumor Institute - Fruitland | Fruitland | Idaho | 83619 | - |
| Saint Luke's Mountain States Tumor Institute - Meridian | Meridian | Idaho | 83642 | - |
| Saint Luke's Mountain States Tumor Institute - Nampa | Nampa | Idaho | 83686 | - |
| Saint Luke's Mountain States Tumor Institute-Twin Falls | Twin Falls | Idaho | 83301 | - |
| Illinois CancerCare-Bloomington | Bloomington | Illinois | 61704 | - |
| Saint Joseph Medical Center | Bloomington | Illinois | 61701 | - |
| Illinois CancerCare-Canton | Canton | Illinois | 61520 | - |
| Memorial Hospital of Carbondale | Carbondale | Illinois | 62902 | - |
| Illinois CancerCare-Carthage | Carthage | Illinois | 62321 | - |
| Centralia Oncology Clinic | Centralia | Illinois | 62801 | - |
| Cancer Care Center of Decatur | Decatur | Illinois | 62526 | - |
| Decatur Memorial Hospital | Decatur | Illinois | 62526 | - |
| Crossroads Cancer Center | Effingham | Illinois | 62401 | - |
| Illinois CancerCare-Eureka | Eureka | Illinois | 61530 | - |
| Illinois CancerCare-Galesburg | Galesburg | Illinois | 61401 | - |
| Western Illinois Cancer Treatment Center | Galesburg | Illinois | 61401 | - |
| Illinois CancerCare-Kewanee Clinic | Kewanee | Illinois | 61443 | - |
| Illinois CancerCare-Macomb | Macomb | Illinois | 61455 | - |
| Illinois CancerCare-Ottawa Clinic | Ottawa | Illinois | 61350 | - |
| Radiation Oncology of Northern Illinois | Ottawa | Illinois | 61350 | - |
| Illinois CancerCare-Pekin | Pekin | Illinois | 61554 | - |
| OSF Saint Francis Radiation Oncology at Pekin Cancer Treatment Center | Pekin | Illinois | 61554 | - |
| Illinois CancerCare-Peoria | Peoria | Illinois | 61615 | - |
| Methodist Medical Center of Illinois | Peoria | Illinois | 61603 | - |
| OSF Saint Francis Medical Center | Peoria | Illinois | 61637 | - |
| OSF Saint Francis Radiation Oncology at Peoria Cancer Center | Peoria | Illinois | 61615 | - |
| Illinois CancerCare-Peru | Peru | Illinois | 61354 | - |
| Valley Radiation Oncology | Peru | Illinois | 61354 | - |
| Illinois CancerCare-Princeton | Princeton | Illinois | 61356 | - |
| Central Illinois Hematology Oncology Center | Springfield | Illinois | 62702 | - |
| Memorial Medical Center | Springfield | Illinois | 62781 | - |
| Southern Illinois University School of Medicine | Springfield | Illinois | 62702 | - |
| Springfield Clinic | Springfield | Illinois | 62702 | - |
| Cancer Care Specialists of Illinois-Swansea | Swansea | Illinois | 62226 | - |
| Kansas Institute of Medicine Cancer and Blood Center | Lenexa | Kansas | 66219 | - |
| Minimally Invasive Surgery Hospital | Lenexa | Kansas | 66219 | - |
| Menorah Medical Center | Overland Park | Kansas | 66209 | - |
| Saint Luke's South Hospital | Overland Park | Kansas | 66213 | - |
| Kansas City NCI Community Oncology Research Program | Prairie Village | Kansas | 66208 | - |
| Wayne State University/Karmanos Cancer Institute | Detroit | Michigan | 48201 | - |
| Weisberg Cancer Treatment Center | Farmington Hills | Michigan | 48334 | - |
| Parkland Health Center-Bonne Terre | Bonne Terre | Missouri | 63628 | - |
| Saint Francis Medical Center | Cape Girardeau | Missouri | 63703 | - |
| Southeast Cancer Center | Cape Girardeau | Missouri | 63703 | - |
| Centerpoint Medical Center LLC | Independence | Missouri | 64057 | - |
| Capital Region Medical Center-Goldschmidt Cancer Center | Jefferson City | Missouri | 65109 | - |
| Heartland Hematology and Oncology Associates Incorporated | Kansas City | Missouri | 64118 | - |
| Research Medical Center | Kansas City | Missouri | 64132 | - |
| Saint Luke's Hospital of Kansas City | Kansas City | Missouri | 64111 | - |
| Saint Luke's East - Lee's Summit | Lee's Summit | Missouri | 64086 | - |
| Liberty Radiation Oncology Center | Liberty | Missouri | 64068 | - |
| Heartland Regional Medical Center | Saint Joseph | Missouri | 64506 | - |
| Sainte Genevieve County Memorial Hospital | Sainte Genevieve | Missouri | 63670 | - |
| Missouri Baptist Medical Center | St Louis | Missouri | 63131 | - |
| Missouri Baptist Sullivan Hospital | Sullivan | Missouri | 63080 | - |
| Missouri Baptist Outpatient Center-Sunset Hills | Sunset Hills | Missouri | 63127 | - |
| Randolph Hospital | Asheboro | North Carolina | 27203 | - |
| Cone Health Cancer Center at Alamance Regional | Burlington | North Carolina | 27215 | - |
| Southeastern Medical Oncology Center-Clinton | Clinton | North Carolina | 28328 | - |
| Southeastern Medical Oncology Center-Goldsboro | Goldsboro | North Carolina | 27534 | - |
| Wayne Memorial Hospital | Goldsboro | North Carolina | 27534 | - |
| Cone Health Cancer Center | Greensboro | North Carolina | 27403 | - |
| Hendersonville Hematology and Oncology at Pardee | Hendersonville | North Carolina | 28791 | - |
| Margaret R Pardee Memorial Hospital | Hendersonville | North Carolina | 28791 | - |
| Southeastern Medical Oncology Center-Jacksonville | Jacksonville | North Carolina | 28546 | - |
| Cone Heath Cancer Center at Mebane | Mebane | North Carolina | 27302 | - |
| Annie Penn Memorial Hospital | Reidsville | North Carolina | 27320 | - |
| Southeastern Medical Oncology Center-Wilson | Wilson | North Carolina | 27893 | - |
| University of Oklahoma Health Sciences Center | Oklahoma City | Oklahoma | 73104 | - |
| Saint Charles Health System | Bend | Oregon | 97701 | - |
| Clackamas Radiation Oncology Center | Clackamas | Oregon | 97015 | - |
| Providence Oncology and Hematology Care Southeast | Clackamas | Oregon | 97015 | - |
| Bay Area Hospital | Coos Bay | Oregon | 97420 | - |
| Providence Newberg Medical Center | Newberg | Oregon | 97132 | - |
| Providence Willamette Falls Medical Center | Oregon City | Oregon | 97045 | - |
| Providence Portland Medical Center | Portland | Oregon | 97213 | - |
| Providence Saint Vincent Medical Center | Portland | Oregon | 97225 | - |
| Medical University of South Carolina | Charleston | South Carolina | 29425 | - |
| Providence Regional Cancer System-Aberdeen | Aberdeen | Washington | 98520 | - |
| Cancer Care Center at Island Hospital | Anacortes | Washington | 98221 | - |
| PeaceHealth Saint Joseph Medical Center | Bellingham | Washington | 98225 | - |
| Providence Regional Cancer System-Centralia | Centralia | Washington | 98531 | - |
| Swedish Medical Center-Edmonds | Edmonds | Washington | 98026 | - |
| Providence Regional Cancer Partnership | Everett | Washington | 98201 | - |
| Swedish Cancer Institute-Issaquah | Issaquah | Washington | 98029 | - |
| Kadlec Clinic Hematology and Oncology | Kennewick | Washington | 99336 | - |
| Seattle Cancer Care Alliance at EvergreenHealth | Kirkland | Washington | 98034 | - |
| Providence Regional Cancer System-Lacey | Lacey | Washington | 98503 | - |
| PeaceHealth Saint John Medical Center | Longview | Washington | 98632 | - |
| Fred Hutchinson Cancer Research Center | Seattle | Washington | 98109 | - |
| Group Health Cooperative-Seattle | Seattle | Washington | 98112 | - |
| Minor and James Medical PLLC | Seattle | Washington | 98104 | - |
| Pacific Gynecology Specialists | Seattle | Washington | 98104 | - |
| Seattle Cancer Care Alliance | Seattle | Washington | 98109 | - |
| Swedish Medical Center-Ballard Campus | Seattle | Washington | 98107 | - |
| Swedish Medical Center-First Hill | Seattle | Washington | 98122-4307 | - |
| University of Washington Medical Center | Seattle | Washington | 98195 | - |
| Providence Regional Cancer System-Shelton | Shelton | Washington | 98584 | - |
| Rockwood Cancer Treatment Center-DHEC-Downtown | Spokane | Washington | 99204 | - |
| Rockwood Clinic Cancer Treatment Center-Valley | Spokane Valley | Washington | 99216 | - |
| PeaceHealth Southwest Medical Center | Vancouver | Washington | 98664 | - |
| Providence Saint Mary Regional Cancer Center | Walla Walla | Washington | 99362 | - |
| Providence Regional Cancer System-Yelm | Yelm | Washington | 98597 | - |