| University of Arkansas for Medical Sciences | Little Rock | Arkansas | 72205 | - |
| Comprehensive Blood and Cancer Center | Bakersfield | California | 93309 | - |
| California Oncology of the Central Valley | Fresno | California | 93710 | - |
| Virginia K. Crosson Cancer Center | Fullerton | California | 92835 | - |
| Pacific Shores Medical Group | Glendale | California | 91204 | - |
| Wilshire Oncology Medical Group | Glendora | California | 91741 | - |
| California Cancer Care Inc. | Greenbrae | California | 94904 | - |
| Pacific Shores Medical Group | Huntington Beach | California | 92648 | - |
| Santa Barbara Hematology Oncology Medical Group | Lompoc | California | 93438 | - |
| Pacific Shores Medical Group | Long Beach | California | 90813 | - |
| Pacific Shores Medical Group | Los Alamitos | California | 90720 | - |
| UCLS Medical Center | Los Angeles | California | 90095 | - |
| Facey Medical Foundation | Mission Hills | California | 91345 | - |
| North Valley Hematology-Oncology Medical Group | Mission Hills | California | 91345 | - |
| Hoag Cancer Center | Newport Beach | California | 92658 | - |
| North Valley Hematology/Oncology Medical Group | Northridge | California | 91328 | - |
| Ventura County Hematology-Oncology Specialists | Oxnard | California | 93030 | - |
| UCLA Medical Group/Pasadena Oncology | Pasadena | California | 91105 | - |
| Wilshire Oncology Medical Group | Pasadena | California | 91105 | - |
| Wilshire Oncology Medical Group | Pomona | California | 91767 | - |
| Southwest Cancer Care | Poway | California | 92064 | - |
| Wilshire Oncology Medical Group | Rancho Cucamonga | California | 91730 | - |
| Cancer Care Associates Meidcal Group, Inc. | Redondo Beach | California | 90277 | - |
| UC Davis Cancer Center | Sacramento | California | 95817 | - |
| Sansum Santa Barbara Foundation Medical Clinic | Santa Barbara | California | 93105 | - |
| Santa Barbara Hematology Oncology Medical Group, Inc. | Santa Barbara | California | 93105 | - |
| Santa Barbara Hematology Oncology Medical Group | Santa Maria | California | 93454 | - |
| John Wayne Cancer Institute | Santa Monica | California | 90404 | - |
| Santa Barbara Hematology Oncology Medical Group | Solvang | California | 93463 | - |
| Cancer Care Associates Medical Group, Inc. | Torrance | California | 90505 | - |
| UCLA/Santa Clarita Valley Cancer Center | Valencia | California | 91355 | - |
| Ventura County Hematology-Oncology Specialists | Ventura | California | 93003 | - |
| San Diego Cancer Center Medical Group | Vista | California | 92083 | - |
| Wilshire Oncology Medical Group | West Covina | California | 91790 | - |
| Whittingham Cancer Center | Norwalk | Connecticut | 06856 | - |
| Division of Hematology/Oncology, University of Miami, School of Medicine | Miami | Florida | 33136 | - |
| Cancer Research Center of Hawaii | Honolulu | Hawaii | 96813 | - |
| Northwestern University Medical School | Chicago | Illinois | 60611 | - |
| Oncology Specialists,S.C. | Park Ridge | Illinois | 60068 | - |
| Cancer Care Center | Bloomington | Indiana | 47403 | - |
| Indiana Oncology and Hematology Consultants | Indianapolis | Indiana | 46202 | - |
| University of Iowa Hospitals and Clinics | Iowa City | Iowa | 52242 | - |
| Consultants in Blood Disorders and Cancer | Louisville | Kentucky | 40207 | - |
| Hematology and Oncology Specialists, LLC | New Orleans | Louisiana | 70115 | - |
| Louisiana State University Health Sciences Center and VA | Shreveport | Louisiana | 71130 | - |
| Maine Center for Cancer Medicine & Blood Disorders | Scarborough | Maine | 04074 | - |
| Kansas City Oncology and Hematology Group | Kansas City | Missouri | 64111 | - |
| Benefis Healthcare | Great Falls | Montana | 59405 | - |
| Comprehensive Cancer Centers of Nevada | Henderson | Nevada | 89052 | - |
| Comprehensive Cancer Centers of Nevada | Las Vegas | Nevada | 89109 | - |
| Northern New Jersey Cancer Associates | Hackensack | New Jersey | 07601 | - |
| Erie County Medical Center | Buffalo | New York | 14215 | - |
| Advanced Oncology Associates | New Rochelle | New York | 10801 | - |
| Mount Sinai School of Medicine | New York | New York | 10029 | - |
| Weill Medical College of Cornell University/New York Presbyterian Hospital | New York | New York | 10021 | - |
| East Carolina University School of Medicine, Department of Medicine, Division of Hematology/Oncology | Greenville | North Carolina | 27858-4354 | - |
| Gabrail Cancer Center | Canton | Ohio | 44718 | - |
| The Cleveland Clinic Foundation | Cleveland | Ohio | 44195 | - |
| Arthur G. James Cancer Hospital and Richard J. Solove Research Institute | Columbus | Ohio | 43210 | - |
| Hematology Oncology Consultants, Inc. | Columbus | Ohio | 43235 | - |
| Oregon Health & Science University | Portland | Oregon | 97201 | - |
| Cancer Centers of the Carolinas | Greenville | South Carolina | 29605 | - |
| Germantown Cancer Foundation | Germantown | Tennessee | 38138 | - |
| Fletcher Allen Health Care | Burlington | Vermont | 05401 | - |
| Virginia Cancer Institute | Richmond | Virginia | 23230 | - |