| Mayo Clinic Scottsdale | Scottsdale | Arizona | 85259-5499 | - |
| Illinois CancerCare - Bloomington | Bloomington | Illinois | 61701 | - |
| St. Joseph Medical Center | 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 | - |
| 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 | - |
| Illinois CancerCare - Kewanee Clinic | Kewanee | Illinois | 61443 | - |
| Illinois CancerCare - Macomb | Macomb | Illinois | 61455 | - |
| McDonough District Hospital | Macomb | Illinois | 61455 | - |
| Illinois CancerCare - Monmouth | Monmouth | Illinois | 61462 | - |
| OSF Holy Family Medical Center | Monmouth | Illinois | 61462 | - |
| 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 | - |
| OSF St. Francis Medical Center | Peoria | Illinois | 61637 | - |
| 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 | - |
| Illinois CancerCare - Spring Valley | Spring Valley | Illinois | 61362 | - |
| Elkhart Clinic, LLC | Elkhart | Indiana | 46514-2098 | - |
| Elkhart General Hospital | Elkhart | Indiana | 46515 | - |
| Michiana Hematology-Oncology, PC - Elkhart | Elkhart | Indiana | 46514 | - |
| Howard Community Hospital | Kokomo | Indiana | 46904 | - |
| Center for Cancer Therapy at LaPorte Hospital and Health Services | La Porte | Indiana | 46350 | - |
| Michiana Hematology-Oncology, PC - South Bend | Mishawaka | Indiana | 46545-1470 | - |
| Saint Joseph Regional Medical Center | Mishawaka | Indiana | 46545-1470 | - |
| Michiana Hematology Oncology PC - Plymouth | Plymouth | Indiana | 46563 | - |
| CCOP - Northern Indiana CR Consortium | South Bend | Indiana | 46601 | - |
| Memorial Hospital of South Bend | South Bend | Indiana | 46601 | - |
| Michiana Hematology Oncology PC - La Porte | Westville | Indiana | 46391 | - |
| McFarland Clinic, PC | Ames | Iowa | 50010 | - |
| Cedar Rapids Oncology Associates | Cedar Rapids | Iowa | 52403 | - |
| Mercy Regional Cancer Center at Mercy Medical Center | Cedar Rapids | Iowa | 52403 | - |
| Medical Oncology and Hematology Associates - West Des Moines | Clive | Iowa | 50325 | - |
| CCOP - Iowa Oncology Research Association | Des Moines | Iowa | 50309 | - |
| John Stoddard Cancer Center at Iowa Lutheran Hospital | Des Moines | Iowa | 50316 | - |
| 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 Cancer Center at Mercy Medical Center - North Iowa | Mason City | Iowa | 50401 | - |
| 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 - 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 | - |
| Battle Creek Health System Cancer Care Center | Battle Creek | Michigan | 49017 | - |
| Mecosta County Medical Center | Big Rapids | Michigan | 49307 | - |
| Green Bay Oncology, Limited - Escanaba | Escanaba | Michigan | 49431 | - |
| Butterworth Hospital at Spectrum Health | Grand Rapids | Michigan | 49503 | - |
| CCOP - Grand Rapids | Grand Rapids | Michigan | 49503 | - |
| Lacks Cancer Center at Saint Mary's Health Care | Grand Rapids | Michigan | 49503 | - |
| Dickinson County Healthcare System | Iron Mountain | Michigan | 49801 | - |
| Mercy General Health Partners | Muskegon | Michigan | 49443 | - |
| Michiana Hematology Oncology PC - Niles | Niles | Michigan | 49120 | - |
| Lakeland Regional Cancer Care Center - St. Joseph | Saint Joseph | Michigan | 49085 | - |
| Lakeside Cancer Specialists, PLLC | Saint Joseph | Michigan | 49085 | - |
| Munson Medical Center | Traverse City | Michigan | 49684 | - |
| Metro Health Hospital | Wyoming | Michigan | 49519 | - |
| Fairview Ridges Hospital | Burnsville | Minnesota | 55337 | - |
| Mercy and Unity Cancer Center at Mercy Hospital | Coon Rapids | Minnesota | 55433 | - |
| CCOP - Duluth | Duluth | Minnesota | 55805 | - |
| Duluth Clinic Cancer Center - Duluth | Duluth | Minnesota | 55805-1983 | - |
| Miller - Dwan Medical Center | Duluth | Minnesota | 55805 | - |
| 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 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 | - |
| Humphrey Cancer Center at North Memorial Outpatient Center | Robbinsdale | Minnesota | 55422-2900 | - |
| Mayo Clinic Cancer Center | Rochester | Minnesota | 55905 | - |
| 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 Hematology, PA - Woodbury | Woodbury | Minnesota | 55125 | - |
| 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 | - |
| St. James Healthcare Cancer Care | Butte | Montana | 59701 | - |
| Great Falls Clinic - Main Facility | Great Falls | Montana | 59405 | - |
| Sletten Cancer Institute at Benefis Healthcare | Great Falls | Montana | 59405 | - |
| Northern Montana Hospital | Havre | Montana | 59501 | - |
| St. Peter's Hospital | Helena | Montana | 59601 | - |
| Glacier Oncology, PLLC | Kalispell | Montana | 59901 | - |
| Kalispell Medical Oncology at KRMC | Kalispell | Montana | 59901 | - |
| Kalispell Regional Medical Center | Kalispell | Montana | 59901 | - |
| Montana Cancer Center at St. Patrick Hospital and Health Sciences Center | Missoula | Montana | 59807 | - |
| Bismarck Cancer Center | Bismarck | North Dakota | 58501 | - |
| Medcenter One Hospital Cancer Care Center | Bismarck | North Dakota | 58501 | - |
| Mid Dakota Clinic, PC | Bismarck | North Dakota | 58501 | - |
| St. Alexius Medical Center Cancer Center | Bismarck | North Dakota | 58502 | - |
| Rapid City Regional Hospital | Rapid City | South Dakota | 57701 | - |
| Green Bay Oncology, Limited at St. Mary's Hospital | Green Bay | Wisconsin | 54303 | - |
| Green Bay Oncology, Limited at St. Vincent Hospital Regional Cancer Center | 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 | - |
| Holy Family Memorial Medical Center Cancer Care Center | Manitowoc | Wisconsin | 54221-1450 | - |
| Bay Area Cancer Care Center at Bay Area Medical Center | Marinette | Wisconsin | 54143 | - |
| Green Bay Oncology, Limited - Oconto Falls | Oconto Falls | Wisconsin | 54154 | - |
| St. Nicholas Hospital | Sheboygan | Wisconsin | 53081 | - |
| Green Bay Oncology, Limited - Sturgeon Bay | Sturgeon Bay | Wisconsin | 54235 | - |
| Welch Cancer Center at Sheridan Memorial Hospital | Sheridan | Wyoming | 82801 | - |