| City of Hope Comprehensive Cancer Center | Duarte | California | 91010-3000 | - |
| Aurora Presbyterian Hospital | Aurora | Colorado | 80012 | - |
| Boulder Community Hospital | Boulder | Colorado | 80301-9019 | - |
| Penrose Cancer Center at Penrose Hospital | Colorado Springs | Colorado | 80933 | - |
| CCOP - Colorado Cancer Research Program | Denver | Colorado | 80222 | - |
| Porter Adventist Hospital | Denver | Colorado | 80210 | - |
| Presbyterian - St. Luke's Medical Center | Denver | Colorado | 80218 | - |
| Rose Medical Center | Denver | Colorado | 80220 | - |
| St. Anthony Central Hospital | Denver | Colorado | 80204 | - |
| St. Joseph Hospital | Denver | Colorado | 80218 | - |
| Swedish Medical Center | Englewood | Colorado | 80110 | - |
| North Colorado Medical Center | Greeley | Colorado | 80631 | - |
| Littleton Adventist Hospital | Littleton | Colorado | 80122 | - |
| Sky Ridge Medical Center | Lone Tree | Colorado | 80124 | - |
| Hope Cancer Care Center at Longmont United Hospital | Longmont | Colorado | 80501 | - |
| McKee Medical Center | Loveland | Colorado | 80539 | - |
| Parker Adventist Hospital | Parker | Colorado | 80138 | - |
| St. Mary - Corwin Regional Medical Center | Pueblo | Colorado | 81004 | - |
| Exempla Lutheran Medical Center | Wheat Ridge | Colorado | 80033 | - |
| Tunnell Cancer Center at Beebe Medical Center | Lewes | Delaware | 19958 | - |
| CCOP - Christiana Care Health Services | Newark | Delaware | 19713 | - |
| Florida Hospital Cancer Institute at Florida Hospital Orlando | Orlando | Florida | 32803-1273 | - |
| St. Joseph Regional Medical Center | Lewiston | Idaho | 83501 | - |
| Illinois CancerCare - Bloomington | Bloomington | Illinois | 61701 | - |
| Graham Hospital | Canton | Illinois | 61520 | - |
| Illinois CancerCare - Canton | Canton | Illinois | 61520 | - |
| Illinois CancerCare - Carthage | Carthage | Illinois | 62321 | - |
| Memorial Hospital | Carthage | Illinois | 62321 | - |
| Hematology and Oncology Associates | Chicago | Illinois | 60611 | - |
| Robert H. Lurie Comprehensive Cancer Center at Northwestern University | Chicago | Illinois | 60611-3013 | - |
| Decatur Memorial Hospital Cancer Care Institute | Decatur | Illinois | 62526 | - |
| Eureka Community Hospital | Eureka | Illinois | 61530 | - |
| Illinois CancerCare - Eureka | Eureka | Illinois | 61530 | - |
| Galesburg Clinic, PC | Galesburg | Illinois | 61401 | - |
| Illinois CancerCare - Galesburg | Galesburg | Illinois | 61401 | - |
| Illinois CancerCare - Havana | Havana | Illinois | 62644 | - |
| Mason District Hospital | Havana | Illinois | 62644 | - |
| Kellogg Cancer Care Center | Highland Park | Illinois | 60035 | - |
| Provena St. Mary's Regional Cancer Center - Kankakee | Kankakee | Illinois | 60901 | - |
| Illinois CancerCare - Kewanee Clinic | Kewanee | Illinois | 61443 | - |
| North Shore Oncology and Hematology Associates, Limited - Libertyville | Libertyville | Illinois | 60048 | - |
| Illinois CancerCare - Macomb | Macomb | Illinois | 61455 | - |
| McDonough District Hospital | Macomb | Illinois | 61455 | - |
| Cardinal Bernardin Cancer Center at Loyola University Medical Center | Maywood | Illinois | 60153 | - |
| Illinois CancerCare - Monmouth | Monmouth | Illinois | 61462 | - |
| Cancer Care and Hematology Specialists of Chicagoland - Niles | Niles | Illinois | 60714 | - |
| BroMenn Regional Medical Center | Normal | Illinois | 61761 | - |
| Community Cancer Center | Normal | Illinois | 61761 | - |
| Illinois CancerCare - 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 | - |
| Illinois CancerCare - Pekin | Pekin | Illinois | 61603 | - |
| 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 | - |
| Proctor Hospital | Peoria | Illinois | 61614 | - |
| Illinois CancerCare - Peru | Peru | Illinois | 61354 | - |
| Illinois Valley Community Hospital | Peru | Illinois | 61354 | - |
| Illinois CancerCare - Princeton | Princeton | Illinois | 61356 | - |
| Perry Memorial Hospital | Princeton | Illinois | 61356 | - |
| Hematology Oncology Associates - Skokie | Skokie | Illinois | 60076 | - |
| Illinois CancerCare - Spring Valley | Spring Valley | Illinois | 61362 | - |
| Regional Cancer Center at Memorial Medical Center | Springfield | Illinois | 62781-0001 | - |
| St. Francis Hospital and Health Centers - Beech Grove Campus | Beech Grove | Indiana | 46107 | - |
| Reid Hospital & Health Care Services | Richmond | Indiana | 47374 | - |
| McFarland Clinic, PC | Ames | Iowa | 50010 | - |
| Mercy Medical Center - Sioux City | Sioux City | Iowa | 51102 | - |
| 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 - Fort Scott | Fort Scott | Kansas | 66701 | - |
| Cancer Center of Kansas-Independence | Independence | Kansas | 67301 | - |
| Cancer Center of Kansas, PA - Kingman | Kingman | Kansas | 67068 | - |
| Lawrence Memorial Hospital | Lawrence | Kansas | 66044 | - |
| Cancer Center of Kansas, PA - Liberal | Liberal | Kansas | 67901 | - |
| Cancer Center of Kansas, PA - McPherson | McPherson | Kansas | 67460 | - |
| 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 | 67401 | - |
| 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 | - |
| Lucille P. Markey Cancer Center at University of Kentucky | Lexington | Kentucky | 40536-0093 | - |
| Union Hospital of Cecil County | Elkton | Maryland | 21921 | - |
| Hickman Cancer Center at Bixby Medical Center | Adrian | Michigan | 49221 | - |
| Barbara Ann Karmanos Cancer Institute | Detroit | Michigan | 48201-1379 | - |
| Mercy Memorial Hospital - Monroe | Monroe | Michigan | 48162 | - |
| 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 | - |
| HealthEast Cancer Care at St. John's Hospital | Maplewood | Minnesota | 55109 | - |
| Minnesota Oncology - Maplewood | Maplewood | Minnesota | 55109 | - |
| Hennepin County Medical Center - Minneapolis | Minneapolis | Minnesota | 55415 | - |
| Virginia Piper Cancer Institute at Abbott - Northwestern Hospital | Minneapolis | Minnesota | 55407 | - |
| New Ulm Medical Center | New Ulm | Minnesota | 56073 | - |
| 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 | - |
| Lakeview Hospital | Stillwater | Minnesota | 55082 | - |
| Ridgeview Medical Center | Waconia | Minnesota | 55387 | - |
| Willmar Cancer Center at Rice Memorial Hospital | Willmar | Minnesota | 56201 | - |
| Minnesota Oncology - Woodbury | Woodbury | Minnesota | 55125 | - |
| Saint Louis University Cancer Center | St Louis | Missouri | 63110 | - |
| Siteman Cancer Center at Barnes-Jewish Hospital - Saint Louis | St Louis | Missouri | 63110 | - |
| Cancer Institute of New Jersey at Hamilton | Hamilton | New Jersey | 08690 | - |
| Cancer Institute of New Jersey at UMDNJ - Robert Wood Johnson Medical School | New Brunswick | New Jersey | 08903 | - |
| Cancer Institute of New Jersey at Cooper - Voorhees | Voorhees Township | New Jersey | 08043 | - |
| James P. Wilmot Cancer Center at University of Rochester Medical Center | Rochester | New York | 14642 | - |
| SUNY Upstate Medical University Hospital | Syracuse | New York | 13210 | - |
| Arthur G. James Cancer Hospital and Richard J. Solove Research Institute at Ohio State University Comprehensive Cancer Center | Columbus | Ohio | 43210-1240 | - |
| CCOP - Dayton | Dayton | Ohio | 45420 | - |
| 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 | - |
| Community Cancer Center | Elyria | Ohio | 44035 | - |
| Hematology Oncology Center | Elyria | Ohio | 44035 | - |
| 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 | - |
| Lima Memorial Hospital | Lima | Ohio | 45804 | - |
| Northwest Ohio Oncology Center | Maumee | Ohio | 43537-1839 | - |
| St. Charles Mercy Hospital | Oregon | Ohio | 43616 | - |
| North Coast Cancer Care, Incorporated | Sandusky | Ohio | 44870 | - |
| Flower Hospital Cancer Center | Sylvania | Ohio | 43560 | - |
| Mercy Hospital of Tiffin | Tiffin | Ohio | 44883 | - |
| CCOP - Toledo Community Hospital | Toledo | Ohio | 43617 | - |
| Medical University of Ohio Cancer Center | Toledo | Ohio | 43614 | - |
| St. Anne Mercy Hospital | Toledo | Ohio | 43623 | - |
| St. Vincent Mercy Medical Center | Toledo | Ohio | 43608 | - |
| Toledo Clinic, Incorporated - Main Clinic | Toledo | Ohio | 43623 | - |
| Toledo Hospital | Toledo | Ohio | 43606 | - |
| UVMC Cancer Care Center at Upper Valley Medical Center | Troy | Ohio | 45373-1300 | - |
| Fulton County Health Center | Wauseon | Ohio | 43567 | - |
| Ruth G. McMillan Cancer Center at Greene Memorial Hospital | Xenia | Ohio | 45385 | - |
| Clackamas Radiation Oncology Center | Clackamas | Oregon | 97015 | - |
| Providence Milwaukie Hospital | Milwaukie | Oregon | 97222 | - |
| Providence Newberg Medical Center | Newberg | Oregon | 97132 | - |
| Willamette Falls Hospital | Oregon City | Oregon | 97045 | - |
| CCOP - Columbia River Oncology Program | Portland | Oregon | 97225 | - |
| Providence Cancer Center at Providence Portland Medical Center | Portland | Oregon | 97213-2967 | - |
| Providence St. Vincent Medical Center | Portland | Oregon | 97225 | - |
| Geisinger Cancer Institute at Geisinger Health | Danville | Pennsylvania | 17822-0001 | - |
| Geisinger Hazleton Cancer Center | Hazleton | Pennsylvania | 18201 | - |
| Geisinger Medical Group - Scenery Park | State College | Pennsylvania | 16801 | - |
| Frank M. and Dorothea Henry Cancer Center at Geisinger Wyoming Valley Medical Center | Wilkes-Barre | Pennsylvania | 18711 | - |
| Cancer Centers of the Carolinas - Faris Road | Greenville | South Carolina | 29605 | - |
| Cancer Centers of the Carolinas - Grove Commons | Greenville | South Carolina | 29605 | - |
| CCOP - Greenville | Greenville | South Carolina | 29615 | - |
| Greenville Hospital Cancer Center | Greenville | South Carolina | 29605 | - |
| Cancer Centers of the Carolinas - Greer Medical Oncology | Greer | South Carolina | 29650 | - |
| Cancer Centers of the Carolinas - Seneca | Seneca | South Carolina | 29672 | - |
| Cancer Centers of the Carolinas - Spartanburg | Spartanburg | South Carolina | 29307 | - |
| Baylor University Medical Center - Dallas | Dallas | Texas | 75246 | - |
| Fredericksburg Oncology, Incorporated | Fredericksburg | Virginia | 22401 | - |
| Island Hospital Cancer Care Center at Island Hospital | Anacortes | Washington | 98221 | - |
| Overlake Cancer Center at Overlake Hospital Medical Center | Bellevue | Washington | 98004 | - |
| St. Joseph Cancer Center | Bellingham | Washington | 98225 | - |
| Olympic Hematology and Oncology | Bremerton | Washington | 98310 | - |
| Highline Medical Center Cancer Center | Burien | Washington | 98166 | - |
| Providence Centralia Hospital | Centralia | Washington | 98531-9027 | - |
| Providence Regional Cancer Partnership | Everett | Washington | 98201 | - |
| St. Francis Hospital | Federal Way | Washington | 98003 | - |
| Swedish Medical Center - Issaquah Campus | Issaquah | Washington | 98029 | - |
| Columbia Basin Hematology | Kennewick | Washington | 99336 | - |
| Skagit Valley Hospital Cancer Care Center | Mount Vernon | Washington | 98274 | - |
| Providence St. Peter Hospital Regional Cancer Center | Olympia | Washington | 98506-5166 | - |
| Harrison Poulsbo Hematology and Onocology | Poulsbo | Washington | 98370 | - |
| Good Samaritan Cancer Center | Puyallup | Washington | 98372 | - |
| 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 | - |
| 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 | - |
| Northwest Cancer Specialists at Vancouver Cancer Center | Vancouver | Washington | 98684 | - |
| Southwest Washington Medical Center Cancer Center | Vancouver | Washington | 98664 | - |
| Wenatchee Valley Medical Center | Wenatchee | Washington | 98801-2028 | - |
| Mary Babb Randolph Cancer Center at West Virginia University Hospitals | Morgantown | West Virginia | 26506 | - |
| Gundersen Lutheran Center for Cancer and Blood | La Crosse | Wisconsin | 54601 | - |
| Medical College of Wisconsin Cancer Center | Milwaukee | Wisconsin | 53226 | - |