| Mobile Infirmary Medical Center | Mobile | Alabama | 36652-2144 | - |
| Hembree Mercy Cancer Center at St. Edward Mercy Medical Center | Fort Smith | Arkansas | 72903 | - |
| Ben E. Owens Cancer Treatment Center at St. Bernard's Medical Center | Jonesboro | Arkansas | 72401-9320 | - |
| 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 | - |
| Mercy General Hospital | Sacramento | California | 95819 | - |
| University of California Davis Cancer Center | Sacramento | California | 95817 | - |
| Doctors Medical Center - San Pablo Campus | San Pablo | California | 94806 | - |
| West Florida Cancer Institute at West Florida Hospital - Pensacola | Pensacola | Florida | 32514 | - |
| St. Luke's Mountain States Tumor Institute - Boise | Boise | Idaho | 83712 | - |
| Saint Anthony's Hospital at Saint Anthony's Health Center | Alton | Illinois | 62002 | - |
| Cardinal Bernardin Cancer Center at Loyola University Medical Center | Maywood | Illinois | 60153 | - |
| Good Samaritan Regional Health Center | Mount Vernon | Illinois | 62864 | - |
| Edward Hospital Cancer Center | Naperville | Illinois | 60540 | - |
| Hematology Oncology Consultants - Naperville | Naperville | Illinois | 60540 | - |
| 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 | - |
| St. Francis Comprehensive Cancer Center | Topeka | Kansas | 66606 | - |
| Stormont-Vail Cancer Center | Topeka | Kansas | 66604 | - |
| 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 | - |
| CCOP - Michigan Cancer Research Consortium | Ann Arbor | Michigan | 48106 | - |
| Saint Joseph Mercy Cancer Center | Ann Arbor | Michigan | 48106-0995 | - |
| University of Michigan Comprehensive Cancer Center | Ann Arbor | Michigan | 48109-0942 | - |
| Bay Regional Medical Center | Bay City | Michigan | 48708 | - |
| Barbara Ann Karmanos Cancer Institute | Detroit | Michigan | 48201-1379 | - |
| Genesys Hurley Cancer Institute | Flint | Michigan | 48503 | - |
| Van Elslander Cancer Center at St. John Hospital and Medical Center | Grosse Pointe Woods | Michigan | 48236 | - |
| Ted B. Wahby Cancer Center at Mount Clemens General Hospital | Mount Clemens | Michigan | 48043 | - |
| Mercy Regional Cancer Center at Mercy Hospital | Port Huron | Michigan | 48060 | - |
| Seton Cancer Institute - Saginaw | Saginaw | Michigan | 48601 | - |
| St. John Macomb Hospital | Warren | Michigan | 48093 | - |
| Saint Francis Medical Center | Cape Girardeau | Missouri | 63701 | - |
| Southeast Missouri Regional Cancer Center at Southeast Missouri Hospital | Gape Girardeau | Missouri | 63701 | - |
| 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 | - |
| CCOP - St. Louis-Cape Girardeau | St Louis | Missouri | 63141 | - |
| David C. Pratt Cancer Center at St. John's Mercy | St Louis | Missouri | 63141 | - |
| 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 | - |
| Great Falls Clinic | 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 | - |
| Valley Hospital - Ridgewood | Ridgewood | New Jersey | 07450 | - |
| Hematology Oncology Associates, PC | Albuquerque | New Mexico | 87106 | - |
| Lovelace Medical Center | Albuquerque | New Mexico | 87108 | - |
| University of New Mexico Cancer Research and Treatment Center | Albuquerque | New Mexico | 87131-5636 | - |
| New Mexico Cancer Care Associates | Santa Fe | New Mexico | 87505 | - |
| Highland Hospital of Rochester | Rochester | New York | 14620 | - |
| Interlakes Oncology/Hematology PC | Rochester | New York | 14623 | - |
| James P. Wilmot Cancer Center at University of Rochester Medical Center | Rochester | New York | 14642 | - |
| Wayne Memorial Hospital, Incorporated | Goldsboro | North Carolina | 27534 | - |
| Rutherford Hospital | Rutherfordton | North Carolina | 28139 | - |
| Forsyth Regional Cancer Center at Forsyth Medical Center | Winston-Salem | North Carolina | 27103 | - |
| Cleveland Clinic Taussig Cancer Center | Cleveland | Ohio | 44195 | - |
| Community Oncology Group at Cleveland Clinic Cancer Center | Independence | Ohio | 44131 | - |
| MedCentral - Mansfield Hospital | Mansfield | Ohio | 44903 | - |
| Cleveland Clinic - Wooster | Wooster | Ohio | 44691 | - |
| 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 | - |
| Legacy Meridian Park Hospital | Tualatin | Oregon | 97062 | - |
| AnMed Health Cancer Center | Anderson | South Carolina | 29621 | - |
| Bon Secours St. Francis Health System | Greenville | South Carolina | 29601 | - |
| CCOP - Greenville | Greenville | South Carolina | 29615 | - |
| CCOP - Upstate Carolina | Spartanburg | South Carolina | 29303 | - |
| Gibbs Regional Cancer Center at Spartanburg Regional Medical Center | Spartanburg | South Carolina | 29303 | - |
| University of Texas Medical Branch | Galveston | Texas | 77555-0361 | - |
| Cancer Therapy and Research Center | San Antonio | Texas | 78229 | - |
| University Hospital - San Antonio | San Antonio | Texas | 78229 | - |
| University of Texas Health Science Center at San Antonio | San Antonio | Texas | 78229-3900 | - |
| Veterans Affairs Medical Center - San Antonio (Murphy) | San Antonio | Texas | 78209 | - |
| American Fork Hospital | American Fork | Utah | 84003 | - |
| Logan Regional Hospital | Logan | Utah | 84321 | - |
| Cottonwood Hospital Medical Center | Murray | Utah | 84107 | - |
| McKay-Dee Hospital Center | Ogden | Utah | 84403 | - |
| Utah Valley Regional Medical Center - Provo | Provo | Utah | 84604 | - |
| Huntsman Cancer Institute at University of Utah | Salt Lake City | Utah | 84112 | - |
| Latter Day Saints Hospital | Salt Lake City | Utah | 84103 | - |
| Utah Cancer Specialists at UCS Cancer Center | Salt Lake City | Utah | 84106 | - |
| Dixie Regional Medical Center - East Campus | St. George | Utah | 84770 | - |
| Danville Regional Medical Center | Danville | Virginia | 24541 | - |
| Auburn Regional Center for Cancer Care | Auburn | Washington | 98002 | - |
| St. Joseph Cancer Center | Bellingham | Washington | 98225 | - |
| Olympic Hematology and Oncology | Bremerton | Washington | 98310 | - |
| Providence Centralia Hospital Regional Cancer Center | Centralia | Washington | 98531-9027 | - |
| St. Francis Hospital | Federal Way | Washington | 98003 | - |
| Skagit Valley Hospital Cancer Care Center | Mount Vernon | Washington | 98273 | - |
| Capital Medical Center | Olympia | Washington | 98507 | - |
| Providence St. Peter Hospital Regional Cancer Center | Olympia | Washington | 98506-5166 | - |
| Good Samaritan Cancer Center | Puyallup | Washington | 98372 | - |
| 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 | - |
| North Puget Oncology at United General Hospital | Sedro-Woolley | Washington | 98284 | - |
| Cancer Care Northwest - Spokane South | Spokane | Washington | 99202 | - |
| Allenmore Hospital | Tacoma | Washington | 98405 | - |
| CCOP - Northwest | Tacoma | Washington | 98405 | - |
| MultiCare Regional Cancer Center at Tacoma General Hospital | Tacoma | Washington | 98405 | - |
| St. Clare Hospital | Tacoma | Washington | 98499 | - |
| St. Joseph Medical Center at Franciscan Health System | Tacoma | Washington | 98405-3004 | - |
| Southwest Washington Medical Center Cancer Center | Vancouver | Washington | 98668 | - |
| Wenatchee Valley Medical Center | Wenatchee | Washington | 98801-2028 | - |
| Welch Cancer Center at Sheridan Memorial Hospital | Sheridan | Wyoming | 82801 | - |