| Providence Cancer Center | Anchorage | Alaska | 99508 | - |
| Mayo Clinic Scottsdale | Scottsdale | Arizona | 85259-5499 | - |
| Arkansas Cancer Research Center at University of Arkansas for Medical Sciences | Little Rock | Arkansas | 72205 | - |
| Eden Medical Center | Castro Valley | California | 94546 | - |
| Saint Rose Hospital | Hayward | California | 94545 | - |
| Alta Bates Summit Medical Center - Summit Campus | Oakland | California | 94609 | - |
| CCOP - Bay Area Tumor Institute | Oakland | California | 94609 | - |
| Highland General Hospital at St. George's University School of Medicine | Oakland | California | 94602 | - |
| Valley Care Medical Center | Pleasanton | California | 94588 | - |
| Doctors Medical Center - San Pablo Campus | San Pablo | California | 94806 | - |
| Mayo Clinic - Jacksonville | Jacksonville | Florida | 32224 | - |
| 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 | - |
| Gwinnett Medical Center | Lawrenceville | Georgia | 30045 | - |
| Kennestone Cancer Center at Wellstar Kennestone Hospital | Marietta | Georgia | 30060 | - |
| Southern Regional Medical Center | Riverdale | Georgia | 30274-2600 | - |
| Curtis & Elizabeth Anderson Cancer Institute at Memorial Health University Medical Center | Savannah | Georgia | 31403-3089 | - |
| Pearlman Comprehensive Cancer Center at South Georgia Medical Center | Valdosta | Georgia | 31603 | - |
| Saint Anthony's Hospital at Saint Anthony's Health Center | Alton | Illinois | 62002 | - |
| Rush-Copley Cancer Care Center | Aurora | Illinois | 60507 | - |
| St. Joseph Medical Center | Bloomington | Illinois | 61701 | - |
| Graham Hospital | Canton | Illinois | 61520 | - |
| Memorial Hospital | Carthage | Illinois | 62321 | - |
| Eureka Community Hospital | Eureka | Illinois | 61530 | - |
| Galesburg Clinic | Galesburg | Illinois | 61401 | - |
| Galesburg Cottage Hospital | Galesburg | Illinois | 61401 | - |
| Mason District Hospital | Havana | Illinois | 62644 | - |
| 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 | - |
| 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 | - |
| 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 | - |
| Saint Anthony Memorial Health Centers | Michigan City | Indiana | 46360 | - |
| Reid Hospital & Health Care Services, Incorporated | Richmond | Indiana | 47374 | - |
| McFarland Clinic, PC | Ames | Iowa | 50010 | - |
| Cedar Rapids Oncology Associates | Cedar Rapids | Iowa | 52403 | - |
| Genesis Regional Cancer Center at Genesis Medical Center | Davenport | Iowa | 52803 | - |
| CCOP - Iowa Oncology Research Association | Des Moines | Iowa | 50309 | - |
| 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 | - |
| Medical Oncology and Hematology Associates at John Stoddard Cancer Center | Des Moines | Iowa | 50309 | - |
| Medical Oncology and Hematology Associates at Mercy Cancer Center | Des Moines | Iowa | 50314 | - |
| Mercy Cancer Center at Mercy Medical Center - Des Moines | Des Moines | Iowa | 50314 | - |
| Mercy Capitol Hospital | Des Moines | Iowa | 50307 | - |
| Mercy Cancer Center at Mercy Medical Center - North Iowa | Mason City | Iowa | 50401 | - |
| McCreery Cancer Center at Ottumwa Regional | Ottumwa | Iowa | 52501 | - |
| Mercy Medical Center - Sioux City | Sioux City | Iowa | 51104 | - |
| Siouxland Hematology-Oncology Associates, LLP | Sioux City | Iowa | 51101 | - |
| Siouxland Regional Cancer Center | 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, PA - Kingman | Kingman | Kansas | 67068 | - |
| Southwest Medical Center | Liberal | Kansas | 67901 | - |
| Cancer Center of Kansas, PA - Newton | Newton | Kansas | 67114 | - |
| 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 | - |
| Cancer Center of Kansas, PA - Wellington | Wellington | Kansas | 67152 | - |
| Associates in Womens Health, PA - North Review | Wichita | Kansas | 67203 | - |
| 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 | - |
| Cancer Center of Kansas, PA - Winfield | Winfield | Kansas | 67156 | - |
| Cancer Research Center at Boston Medical Center | Boston | Massachusetts | 02118 | - |
| 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 | - |
| Green Bay Oncology, Limited - Escanaba | Escanaba | Michigan | 49431 | - |
| 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 | - |
| Green Bay Oncology, Limited - Iron Mountain | Iron Mountain | Michigan | 49801 | - |
| Foote Hospital | Jackson | Michigan | 49201 | - |
| Sparrow Regional Cancer Center | Lansing | Michigan | 48909 | - |
| Ted B. Wahby Cancer Center at Mount Clemens General Hospital | Mount Clemens | Michigan | 48043 | - |
| Seton Cancer Institute - Saginaw | Saginaw | Michigan | 48601 | - |
| St. John Macomb Hospital | Warren | Michigan | 48093 | - |
| - | Alexandria | Minnesota | 56308 | - |
| MeritCare Clinic - Bemidji | Bemidji | Minnesota | 56601 | - |
| Fairview Ridges Hospital | Burnsville | Minnesota | 55337 | - |
| Mercy and Unity Cancer Center at Mercy Hospital | Coon Rapids | Minnesota | 55433 | - |
| CCOP - Duluth | Duluth | Minnesota | 55805 | - |
| Miller-Dwan Medical Center | Duluth | Minnesota | 55805 | - |
| St. Mary's - Duluth Clinic Cancer Center | Duluth | Minnesota | 55805 | - |
| Fairview Southdale Hospital | Edina | Minnesota | 55435 | - |
| - | Fergus Falls | Minnesota | 56537 | - |
| Mercy and Unity Cancer Center at Unity Hospital | Fridley | Minnesota | 55432 | - |
| Hutchinson Area Health Care | Hutchinson | Minnesota | 55350 | - |
| Meeker County Memorial Hospital | Lichfield | Minnesota | 55355 | - |
| HealthEast Cancer Care at St. John's Hospital | Maplewood | Minnesota | 55109 | - |
| Minnesota Oncology Hematology, PA at Maplewood Cancer Center | Maplewood | Minnesota | 55109 | - |
| Hennepin County Medical Center - Minneapolis | Minneapolis | Minnesota | 55415 | - |
| Virginia Piper Cancer Institute at Abbott-Northwestern Hospital | Minneapolis | Minnesota | 55407 | - |
| Chippewa County - Montevideo Hospital | Montevideo | Minnesota | 56265 | - |
| Hubert H. Humphrey Cancer Center at North Memorial Medical Center | Robbinsdale | Minnesota | 55422-2900 | - |
| Mayo Clinic Cancer Center | Rochester | Minnesota | 55905 | - |
| CentraCare Clinic - River Campus | Saint Cloud | Minnesota | 56303 | - |
| Coborn Cancer Center | Saint Cloud | Minnesota | 56303 | - |
| CCOP - Metro-Minnesota | Saint Louis Park | Minnesota | 55416 | - |
| Park Nicollet Health Services | Saint Louis Park | Minnesota | 55416 | - |
| Regions Hospital Cancer Care Center | Saint Paul | Minnesota | 55101 | - |
| St. Joseph's Hospital | Saint Paul | Minnesota | 55102 | - |
| United Hospital | Saint Paul | Minnesota | 55102 | - |
| Saint Francis Cancer Center | Shakopee | Minnesota | 55379 | - |
| Ridgeview Medical Center | Waconia | Minnesota | 55387 | - |
| Minnesota Oncology Hematology, PA - Woodbury | Woodbury | Minnesota | 55125 | - |
| Woodwinds Health Campus | Woodbury | Minnesota | 55125 | - |
| Regional Cancer Center at Singing River Hospital | Pascagoula | Mississippi | 39581 | - |
| Saint Francis Medical Center | Cape Girardeau | Missouri | 63701 | - |
| Southeast Missouri Regional Cancer Center at Southeast Missouri Hospital | Gape Girardeau | Missouri | 63701 | - |
| CCOP - Kansas City | Kansas City | Missouri | 64131 | - |
| 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 | - |
| Arch Medical Services, Incorporated at Center for Cancer Care Research | St Louis | Missouri | 63141 | - |
| CCOP - St. Louis-Cape Girardeau | St Louis | Missouri | 63141 | - |
| David C. Pratt Cancer Center at St. John's Mercy | St Louis | Missouri | 63141 | - |
| Missouri Baptist Cancer Center | St Louis | Missouri | 63131 | - |
| Billings Clinic Cancer Center | Billings | Montana | 59107-5100 | - |
| CCOP - Montana Cancer Consortium | Billings | Montana | 59101 | - |
| Deaconess Billings Clinic - Downtown | Billings | Montana | 59107-7000 | - |
| Hematology-Oncology Centers of the Northern Rockies - Billings | Billings | Montana | 59101 | - |
| Northern Rockies Radiation Oncology Center | Billings | Montana | 59101 | - |
| St. Vincent Healthcare | Billings | Montana | 59101 | - |
| Bozeman Deaconess Hospital | Bozeman | Montana | 59715 | - |
| St. James Community Hospital | Butte | Montana | 59701 | - |
| Big Sky Oncology | Great Falls | Montana | 59405 | - |
| Sletten Regional 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 | 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 | - |
| Cancer Resource Center - Lincoln | Lincoln | Nebraska | 68510 | - |
| CCOP - Missouri Valley Cancer Consortium | Omaha | Nebraska | 68106 | - |
| Adirondack Cancer Care - Glens Falls | Glens Falls | New York | 12801 | - |
| Randolph Hospital | Asheboro | North Carolina | 27203-5400 | - |
| Wayne Memorial Hospital, Incorporated | Goldsboro | North Carolina | 27534 | - |
| Moses Cone Regional Cancer Center at Wesley Long Community Hospital | Greensboro | North Carolina | 27403-1198 | - |
| Pardee Memorial Hospital | Hendersonville | North Carolina | 28791 | - |
| Annie Penn Cancer Center | Reidsville | North Carolina | 27320 | - |
| Rutherford Hospital | Rutherfordton | North Carolina | 28139 | - |
| Iredell Memorial Hospital | Statesville | North Carolina | 28677 | - |
| Bismarck Cancer Center | Bismarck | North Dakota | 58501 | - |
| Cancer Care Center at Medcenter One Hospital | Bismarck | North Dakota | 58501 | - |
| Mid Dakota Clinic, PC | Bismarck | North Dakota | 58501 | - |
| St. Alexius Medical Center | Bismarck | North Dakota | 58502 | - |
| CCOP - MeritCare Hospital | Fargo | North Dakota | 58122 | - |
| MeritCare Medical Group | Fargo | North Dakota | 58122 | - |
| Altru Cancer Center at Altru Hospital | Grand Forks | North Dakota | 58201 | - |
| Adena Regional Medical Center | Chillicothe | Ohio | 45601 | - |
| CCOP - Columbus | Columbus | Ohio | 43215 | - |
| Doctors Hospital at Ohio Health | Columbus | Ohio | 43228 | - |
| Grant Riverside Cancer Services | 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 | - |
| Charles F. Kettering Memorial Hospital | Kettering | Ohio | 45429 | - |
| Fairfield Medical Center | Lancaster | Ohio | 43130 | - |
| Strecker Cancer Center at Marietta Memorial Hospital | Marietta | Ohio | 45750 | - |
| Middletown Regional Hospital | Middletown | Ohio | 45044 | - |
| 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 Cancer Services at Mount Carmel St. Ann's Hospital | Westerville | Ohio | 43081 | - |
| United States Air Force Medical Center - Wright-Patterson | Wright-Patterson AFB | Ohio | 45433-5529 | - |
| Ruth G. McMillan Cancer Center at Greene Memorial Hospital | Xenia | Ohio | 45385 | - |
| Genesis - Good Samaritan Hospital | Zanesville | Ohio | 43701 | - |
| Natalie Warren Bryant Cancer Center at St. Francis Hospital | Tulsa | Oklahoma | 74136 | - |
| Legacy Mount Hood Medical Center | Gresham | Oregon | 97030 | - |
| Providence Milwaukie Hospital | Milwaukie | Oregon | 97222 | - |
| CCOP - Columbia River Oncology Program | Portland | Oregon | 97225 | - |
| Legacy Emanuel Hospital and Health Center & Children's Hospital | Portland | Oregon | 97227 | - |
| Legacy Good Samaritan Hospital & Medical Center 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 | - |
| Salem Hospital Regional Cancer Care Services | Salem | Oregon | 97309-5014 | - |
| Legacy Meridian Park Hospital | Tualatin | Oregon | 97062 | - |
| Morgan Cancer Center at Lehigh Valley Hospital - Cedar Crest | Allentown | Pennsylvania | 18105 | - |
| Guthrie Cancer Center at Guthrie Clinic Sayre | Sayre | Pennsylvania | 18840 | - |
| AnMed Health Cancer Center | Anderson | South Carolina | 29621 | - |
| Hollings Cancer Center at Medical University of South Carolina | Charleston | South Carolina | 29425 | - |
| CCOP - Upstate Carolina | Spartanburg | South Carolina | 29303 | - |
| Gibbs Regional Cancer Center at Spartanburg Regional Medical Center | Spartanburg | South Carolina | 29303 | - |
| Rapid City Regional Hospital | Rapid City | South Dakota | 57701 | - |
| Avera Cancer Institute | Sioux Falls | South Dakota | 57105 | - |
| Medical X-Ray Center, PC | Sioux Falls | South Dakota | 57105 | - |
| Sioux Valley Hospital and University of South Dakota Medical Center | Sioux Falls | South Dakota | 57117-5039 | - |
| Thompson Cancer Survival Center | Knoxville | Tennessee | 37916 | - |
| M.D. Anderson Cancer Center at University of Texas | Houston | Texas | 77030-4009 | - |
| Danville Regional Medical Center | Danville | Virginia | 24541 | - |
| St. Joseph Cancer Center | Bellingham | Washington | 98225 | - |
| Olympic Hematology and Oncology | Bremerton | Washington | 98310 | - |
| 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 | - |
| Southwest Washington Medical Center Cancer Center | Vancouver | Washington | 98668 | - |
| Wenatchee Valley Medical Center | Wenatchee | Washington | 98801-2028 | - |
| Green Bay Oncology, Limited at St. Mary's Hospital | Green Bay | Wisconsin | 54303 | - |
| Green Bay Oncology, Limited at St. Vincent Hospital | Green Bay | Wisconsin | 54301-3526 | - |
| St. Mary's Hospital Medical Center - Green Bay | Green Bay | Wisconsin | 54303 | - |
| St. Vincent Hospital Regional Cancer Center | Green Bay | Wisconsin | 54307-3508 | - |
| Franciscan Skemp Healthcare | La Crosse | Wisconsin | 54601 | - |
| Bay Area Cancer Care Center at Bay Area Medical Center | Marinette | Wisconsin | 54143 | - |
| Green Bay Oncology, Limited - Oconto Falls | Oconto Falls | Wisconsin | 54154 | - |
| Green Bay Oncology, Limited - Sturgeon Bay | Sturgeon Bay | Wisconsin | 54235 | - |
| Welch Cancer Center at Sheridan Memorial Hospital | Sheridan | Wyoming | 82801 | - |