| Arkansas Cancer Research Center at University of Arkansas for Medical Sciences | Little Rock | Arkansas | 72205 | - |
| Kaiser Permanente - Deer Valley | Antioch | California | 94531 | - |
| Alta Bates Summit Comprehensive Cancer Center | Berkeley | California | 94704 | - |
| Peninsula Medical Center | Burlingame | California | 94010 | - |
| Kaiser Permanente - Fremont | Fremont | California | 94538 | - |
| Kaiser Permanente Medical Center - Hayward | Hayward | California | 94545 | - |
| USC/Norris Comprehensive Cancer Center and Hospital | Los Angeles | California | 90089-9181 | - |
| Contra Costa Regional Medical Center | Martinez | California | 94553-3156 | - |
| Tibotec Therapeutics - Division of Ortho Biotech Products, LP | Marysville | California | 95901 | - |
| El Camino Hospital Cancer Center | Mountain View | California | 94040 | - |
| Sutter Health - Western Division Cancer Research Group | Novato | California | 94945 | - |
| Alta Bates Summit Medical Center - Summit Campus | Oakland | California | 94609 | - |
| CCOP - Bay Area Tumor Institute | Oakland | California | 94609 | - |
| Epic Care - Oakland | Oakland | California | 94612 | - |
| Highland General Hospital | Oakland | California | 94602 | - |
| Kaiser Permanente Medical Center - Oakland | Oakland | California | 94611 | - |
| Chao Family Comprehensive Cancer Center at University of California Irvine Medical Center | Orange | California | 92868 | - |
| Kaiser Permanente Medical Center - Redwood City | Redwood City | California | 94063 | - |
| Kaiser Permanente Medical Center - Richmond | Richmond | California | 94801 | - |
| Kaiser Permanente Medical Center - Roseville | Roseville | California | 95661 | - |
| Kaiser Permanente Medical Center - Sacramento | Sacramento | California | 95825 | - |
| South Sacramento Kaiser-Permanente Medical Center | Sacramento | California | 95823 | - |
| University of California Davis Cancer Center | Sacramento | California | 95817 | - |
| California Pacific Medical Center - California Campus | San Francisco | California | 94118 | - |
| Kaiser Permanente Medical Center - San Francisco Geary Campus | San Francisco | California | 94115 | - |
| Kaiser Permanente Medical Center - Santa Teresa | San Jose | California | 95119 | - |
| Doctors Medical Center - San Pablo Campus | San Pablo | California | 94806 | - |
| Kaiser Foundation Hospital - San Rafael | San Rafael | California | 94903 | - |
| Kaiser Permanente Medical Center - Santa Clara Kiely Campus | Santa Clara | California | 95051 | - |
| Kaiser Permanente Medical Center - Santa Rosa | Santa Rosa | California | 95403 | - |
| Kaiser Permanente Medical Center - South San Francisco | South San Francisco | California | 94080 | - |
| Kaiser Permanente Medical Facility - Stockton | Stockton | California | 95210 | - |
| Tahoe Forest Cancer Center | Truckee | California | 96161 | - |
| Kaiser Permanente Medical Center - Vacaville | Vacaville | California | 95688 | - |
| Kaiser Permanente Medical Center - Vallejo | Vallejo | California | 94589 | - |
| Sutter Solano Medical Center | Vallejo | California | 94589 | - |
| Kaiser Permanente Medical Center - Walnut Creek | Walnut Creek | California | 94596 | - |
| Saint Francis/Mount Sinai Regional Cancer Center at Saint Francis Hospital and Medical Center | Hartford | Connecticut | 06105 | - |
| Pearlman Comprehensive Cancer Center at South Georgia Medical Center | Valdosta | Georgia | 31602 | - |
| Kaiser Permanente - Moanalua Medical Center and Clinic | Honolulu | Hawaii | 96819 | - |
| 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 Luke's Mountain States Tumor Institute - Fruitland | Fruitland | Idaho | 83619 | - |
| Mountain States Tumor Institute - Meridian | Meridian | Idaho | 83642 | - |
| Saint Luke's Mountain States Tumor Institute | Nampa | Idaho | 83686 | - |
| Mountain States Tumor Institute at St. Luke's | Twin Falls | Idaho | 83301 | - |
| Decatur Memorial Hospital Cancer Care Institute | Decatur | Illinois | 62526 | - |
| Regional Cancer Center at Memorial Medical Center | Springfield | Illinois | 62781-0001 | - |
| St. Rose Ambulatory and Surgery Center | Great Bend | Kansas | 67530 | - |
| Hays Medical Center | Hays | Kansas | 67601 | - |
| Hutchinson Hospital Corporation | Hutchinson | Kansas | 67502 | - |
| Kansas City Cancer Centers - West | Kansas City | Kansas | 66112 | - |
| Kansas Masonic Cancer Research Institute at the University of Kansas Medical Center | Kansas City | Kansas | 66160-7357 | - |
| Kansas City Cancer Centers - Southwest | Overland Park | Kansas | 66210 | - |
| Mount Carmel Regional Cancer Center | Pittsburg | Kansas | 66762 | - |
| Tammy Walker Cancer Center at Salina Regional Health Center | Salina | Kansas | 67401 | - |
| Kansas City Cancer Center - Shawnee Mission | Shawnee Mission | Kansas | 66204 | - |
| St. Francis Comprehensive Cancer Center | Topeka | Kansas | 66606 | - |
| Veterans Affairs Medical Center - Topeka (O'Neil) | Topeka | Kansas | 66622 | - |
| Cancer Center of Kansas, PA - Winfield | Winfield | Kansas | 67156 | - |
| Lahey Clinic Medical Center - Burlington | Burlington | Massachusetts | 01805 | - |
| CCOP - Michigan Cancer Research Consortium | Ann Arbor | Michigan | 48106 | - |
| Saint Joseph Mercy Cancer Center | Ann Arbor | Michigan | 48106-0995 | - |
| Oakwood Cancer Center at Oakwood Hospital and Medical Center | Dearborn | Michigan | 48123-2500 | - |
| Barbara Ann Karmanos Cancer Institute | Detroit | Michigan | 48201-1379 | - |
| Genesys Hurley Cancer Institute | Flint | Michigan | 48503 | - |
| Hurley Medical Center | Flint | Michigan | 48503 | - |
| Van Elslander Cancer Center at St. John Hospital and Medical Center | Grosse Pointe Woods | Michigan | 48236 | - |
| Foote Memorial Hospital | Jackson | Michigan | 49201 | - |
| Sparrow Regional Cancer Center | Lansing | Michigan | 48912-1811 | - |
| St. Mary Mercy Hospital | Livonia | Michigan | 48154 | - |
| St. Joseph Mercy Oakland | Pontiac | Michigan | 48341-2985 | - |
| Mercy Regional Cancer Center at Mercy Hospital | Port Huron | Michigan | 48060 | - |
| Seton Cancer Institute at Saint Mary's - Saginaw | Saginaw | Michigan | 48601 | - |
| St. John Macomb Hospital | Warren | Michigan | 48093 | - |
| Regional Cancer Center at Singing River Hospital | Pascagoula | Mississippi | 39581 | - |
| Kansas City Cancer Centers - North | Kansas City | Missouri | 64154 | - |
| Kansas City Cancer Centers - South | Kansas City | Missouri | 64131 | - |
| Truman Medical Center - Hospital Hill | Kansas City | Missouri | 64108 | - |
| Veterans Affairs Medical Center - Kansas City | Kansas City | Missouri | 64128 | - |
| Kansas City Cancer Centers - East | Lee's Summit | Missouri | 64064 | - |
| 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 | - |
| Billings Clinic - Downtown | Billings | Montana | 59107-7000 | - |
| CCOP - Montana Cancer Consortium | Billings | Montana | 59101 | - |
| Hematology-Oncology Centers of the Northern Rockies - Billings | Billings | Montana | 59102 | - |
| St. Vincent Healthcare Cancer Care Services | Billings | Montana | 59101 | - |
| Bozeman Deaconess Cancer Center | Bozeman | Montana | 59715 | - |
| 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 Regional Medical Center | Kalispell | Montana | 59901 | - |
| 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 | - |
| Randolph Hospital | Asheboro | North Carolina | 27203-5400 | - |
| Presbyterian Cancer Center at Presbyterian Hospital | Charlotte | North Carolina | 28233-3549 | - |
| Wayne Memorial Hospital, Incorporated | Goldsboro | North Carolina | 27534 | - |
| Moses Cone Regional Cancer Center at Wesley Long Community Hospital | Greensboro | North Carolina | 27403-1198 | - |
| Harrington Cancer Center | Amarillo | Texas | 79106 | - |
| Huntsman Cancer Institute at University of Utah | Salt Lake City | Utah | 84112 | - |
| Danville Regional Medical Center | Danville | Virginia | 24541 | - |
| Ravenel Oncology Center at Memorial Hospital of Martinsville and Henry County | Martinsville | Virginia | 24115 | - |
| Island Hospital Cancer Care Center at Island Hospital | Anacortes | Washington | 98221 | - |
| St. Joseph Cancer Center | Bellingham | Washington | 98225 | - |
| Olympic Hematology and Oncology | Bremerton | Washington | 98310 | - |
| Highline Medical Center Cancer Center | Burien | Washington | 98166 | - |
| Swedish Medical Center - Issaquah Campus | Issaquah | Washington | 98029 | - |
| Columbia Basin Hematology | Kennewick | Washington | 99336 | - |
| Skagit Valley Hospital Cancer Care Center | Mount Vernon | Washington | 98274 | - |
| Harrison Poulsbo Hematology and Onocology | Poulsbo | Washington | 98370 | - |
| Fred Hutchinson Cancer Research Center | Seattle | Washington | 98109 | - |
| 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 | - |
| North Puget Oncology at United General Hospital | Sedro-Woolley | Washington | 98284 | - |
| Cancer Care Northwest - Spokane South | Spokane | Washington | 99202 | - |
| Evergreen Hematology and Oncology, PS | Spokane | Washington | 99218 | - |
| Wenatchee Valley Medical Center | Wenatchee | Washington | 98801-2028 | - |
| Rocky Mountain Oncology | Casper | Wyoming | 82609 | - |