| Arkansas Cancer Research Center at University of Arkansas for Medical Sciences | Little Rock | Arkansas | 72205 | - |
| City of Hope Comprehensive Cancer Center | Duarte | California | 91010-3000 | - |
| Kaiser Permanente - Fremont | Fremont | California | 94538 | - |
| Kaiser Permanente Medical Center - Hayward | Hayward | California | 94545 | - |
| Scripps Cancer Center - San Diego | La Jolla | California | 92037 | - |
| Kaiser Permanente Medical Center - Oakland | Oakland | California | 94611 | - |
| 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 | - |
| Kaiser Permanente Medical Office -Vandever Medical Office | San Diego | California | 92120 | - |
| Kaiser Permanente Medical Center - San Francisco Geary Campus | San Francisco | California | 94115 | - |
| Kaiser Permanente Medical Center - Santa Teresa | San Jose | California | 95119 | - |
| 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 | - |
| Kaiser Permanente Medical Center - Vallejo | Vallejo | California | 94589 | - |
| Kaiser Permanente Medical Center - Walnut Creek | Walnut Creek | California | 94596 | - |
| Tunnell Cancer Center at Beebe Medical Center | Lewes | Delaware | 19958 | - |
| CCOP - Christiana Care Health Services | Newark | Delaware | 19713 | - |
| Sibley Memorial Hospital | Washington D.C. | District of Columbia | 20016 | - |
| Lakeland Regional Cancer Center at Lakeland Regional Medical Center | Lakeland | Florida | 33805 | - |
| Curtis and Elizabeth Anderson Cancer Institute at Memorial Health University Medical Center | Savannah | Georgia | 31403-3089 | - |
| John H. Stroger, Jr. Hospital of Cook County | Chicago | Illinois | 60612-3785 | - |
| Decatur Memorial Hospital Cancer Care Institute | Decatur | Illinois | 62526 | - |
| Advocate Lutheran General Cancer Care Center | Park Ridge | Illinois | 60068-1174 | - |
| Regional Cancer Center at Memorial Medical Center | Springfield | Illinois | 62781-0001 | - |
| 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 | - |
| 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 | - |
| McFarland Clinic, PC | Ames | Iowa | 50010 | - |
| Holden Comprehensive Cancer Center at University of Iowa | Iowa City | Iowa | 52242-1002 | - |
| McCreery Cancer Center at Ottumwa Regional | Ottumwa | Iowa | 52501 | - |
| 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 | - |
| Lawrence Memorial Hospital | Lawrence | Kansas | 66044 | - |
| 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 | - |
| 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 | - |
| Cancer Center of Kansas, PA - Winfield | Winfield | Kansas | 67156 | - |
| Louisville Oncology at Norton Cancer Institute - Louisville | Louisville | Kentucky | 40202 | - |
| Harry & Jeanette Weinberg Cancer Institute at Franklin Square Hospital Center | Baltimore | Maryland | 21237 | - |
| Union Hospital Cancer Program at Union Hospital | Elkton | Maryland | 21921 | - |
| Cancer Institute at St. Joseph Medical Center | Towson | Maryland | 21204 | - |
| Hudner Oncology Center at Saint Anne's Hospital - Fall River | Fall River | Massachusetts | 02721 | - |
| Josephine Ford Cancer Center at Henry Ford Hospital | Detroit | Michigan | 48202 | - |
| Borgess Medical Center | Kalamazoo | Michigan | 49001 | - |
| Bronson Methodist Hospital | Kalamazoo | Michigan | 49007 | - |
| West Michigan Cancer Center | Kalamazoo | Michigan | 49007-3731 | - |
| Lakeland Regional Cancer Care Center - St. Joseph | Saint Joseph | Michigan | 49085 | - |
| Fairview Ridges Hospital | Burnsville | Minnesota | 55337 | - |
| Mercy and Unity Cancer Center at Mercy Hospital | Coon Rapids | Minnesota | 55433 | - |
| Fairview Southdale Hospital | Edina | Minnesota | 55435 | - |
| Mercy and Unity Cancer Center at Unity Hospital | Fridley | Minnesota | 55432 | - |
| Hutchinson Area Health Care | Hutchinson | Minnesota | 55350 | - |
| Meeker County Memorial Hospital | Litchfield | Minnesota | 55355 | - |
| HealthEast Cancer Care at St. John's Hospital | Maplewood | Minnesota | 55109 | - |
| Minnesota Oncology Hematology, PA - Maplewood | Maplewood | Minnesota | 55109 | - |
| Hennepin County Medical Center - Minneapolis | Minneapolis | Minnesota | 55415 | - |
| Virginia Piper Cancer Institute at Abbott - Northwestern Hospital | Minneapolis | Minnesota | 55407 | - |
| Hubert H. Humphrey Cancer Center at North Memorial Outpatient Center | Robbinsdale | Minnesota | 55422-2900 | - |
| CCOP - Metro-Minnesota | Saint Louis Park | Minnesota | 55416 | - |
| Park Nicollet Cancer Center | Saint Louis Park | Minnesota | 55416 | - |
| Regions Hospital Cancer Care Center | Saint Paul | Minnesota | 55101 | - |
| United Hospital | Saint Paul | Minnesota | 55102 | - |
| St. Francis Cancer Center at St. Francis Medical Center | Shakopee | Minnesota | 55379 | - |
| Ridgeview Medical Center | Waconia | Minnesota | 55387 | - |
| Minnesota Oncology Hematology, PA - Woodbury | Woodbury | Minnesota | 55125 | - |
| 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 and Research | St Louis | Missouri | 63141 | - |
| Missouri Baptist Cancer Center | St Louis | Missouri | 63131 | - |
| 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 | - |
| St. James Healthcare Cancer Care | Butte | Montana | 59701 | - |
| - | Great Falls | Montana | 59405 | - |
| Great Falls Clinic - Main Facility | Great Falls | Montana | 59405 | - |
| 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 | - |
| Methodist Estabrook Cancer Center | Omaha | Nebraska | 68114 | - |
| St. Barnabas Medical Center Cancer Center | Livingston | New Jersey | 07039 | - |
| Cancer Institute of New Jersey at Cooper - Voorhees | Voorhees Township | New Jersey | 08043 | - |
| CCOP - Hematology-Oncology Associates of Central New York | East Syracuse | New York | 13057 | - |
| Charles R. Wood Cancer Center at Glens Falls Hospital | Glens Falls | New York | 12801 | - |
| Wayne Memorial Hospital, Incorporated | Goldsboro | North Carolina | 27534 | - |
| Wake Forest University Comprehensive Cancer Center | Winston-Salem | North Carolina | 27157-1096 | - |
| McDowell Cancer Center at Akron General Medical Center | Akron | Ohio | 44307 | - |
| Mary Rutan Hospital | Bellefontaine | Ohio | 43311 | - |
| Aultman Cancer Center at Aultman Hospital | Canton | Ohio | 44710-1799 | - |
| Adena Regional Medical Center | Chillicothe | Ohio | 45601 | - |
| Oncology Hematology Care, Incorporated - Blue Ash | Cincinnati | Ohio | 45242 | - |
| 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 | - |
| Wayne Hospital | Greenville | Ohio | 45331 | - |
| Charles F. Kettering Memorial Hospital | Kettering | Ohio | 45429 | - |
| Fairfield Medical Center | Lancaster | Ohio | 43130 | - |
| 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 | - |
| Ruth G. McMillan Cancer Center at Greene Memorial Hospital | Xenia | Ohio | 45385 | - |
| Genesis - Good Samaritan Hospital | Zanesville | Ohio | 43701 | - |
| Bryn Mawr Hospital | Bryn Mawr | Pennsylvania | 19010 | - |
| Riddle Memorial Hospital Cancer Center | Media | Pennsylvania | 19063 | - |
| Cancer Center of Paoli Memorial Hospital | Paoli | Pennsylvania | 19301-1792 | - |
| Kimmel Cancer Center at Thomas Jefferson University - Philadelphia | Philadelphia | Pennsylvania | 19107-5541 | - |
| Allegheny Cancer Center at Allegheny General Hospital | Pittsburgh | Pennsylvania | 15212 | - |
| Hematology and Oncology Associates of Northeastern Pennsylvania | Scranton | Pennsylvania | 18508 | - |
| Mount Nittany Medical Center | State College | Pennsylvania | 16803 | - |
| Associates in Hematology-Oncology, PC at Crozer Regional Cancer Center | Upland | Pennsylvania | 19013 | - |
| CCOP - Main Line Health | Wynnewood | Pennsylvania | 19096 | - |
| Lankenau Cancer Center at Lankenau Hospital | Wynnewood | Pennsylvania | 19096 | - |
| CCOP - Greenville | Greenville | South Carolina | 29615 | - |
| Avera Cancer Institute | Sioux Falls | South Dakota | 57105 | - |
| Medical X-Ray Center, PC | Sioux Falls | South Dakota | 57105 | - |
| Sanford Cancer Center at Sanford USD Medical Center | Sioux Falls | South Dakota | 57117-5039 | - |
| Joe Arrington Cancer Research and Treatment Center | Lubbock | Texas | 79410-1894 | - |
| Fletcher Allen Health Care - University Health Center Campus | Burlington | Vermont | 05401 | - |
| Danville Regional Medical Center | Danville | Virginia | 24541 | - |
| West Virginia University Health Sciences Center - Charleston | Charleston | West Virginia | 25304 | - |
| Community Comprehensive Cancer Center at Camden-Clark Memorial Hospital | Parkersburg | West Virginia | 26102 | - |
| Marshfield Clinic - Marshfield Center | Marshfield | Wisconsin | 54449 | - |