| CO |
| Children's Hospital, Denver |
| Denver VA Medical Center, Denver |
| University of Colorado Hospital, Denver |
| |
| IA |
| VA Central Iowa Healthcare Systems, Des Moines |
| |
| IL |
| Rush North Shore Medical Center, Skokie |
| |
| MN |
| Centra Care Laboratory Services, St. Cloud |
| HealthEast, St. Paul |
| Minneapolis VA Medical Center, Minneapolis |
| Park Nicollet Health Services/Methodist Hospital, St. Louis Park |
| Riverview Healthcare Association, Crookston |
| Roseau Area Hospital and Homes, Roseau |
| St. Luke's Hospital , Duluth |
| St. Mary's Hospital, Detroit Lakes |
| Winona Health Comm Memorial, Winona |
| |
| MT |
| Benifits Hospital, Great Falls |
| Community Medical Center, Missoula |
| Holy Rosary, Miles City |
| Kalispell Regional Medical Center, Kalispell |
| Livingston Memorial Hospital, Livingston |
| Sidney Health Center, Sidney |
| St. Patrick's Hospital, Missoula |
| St. Vincent Healthcare, Billings |
| |
| ND |
| Altru Health System, Grand Forks |
| Jamestown Hospital, Jamestown |
| Medcenter One Health Systems, Bismarck |
| Mercy Medical Center, Williston |
| Northern Plains Laboratory, Bismarck |
| Presentation Medical Center, Rolla |
| Trinity Health, Minot |
| West River Regional Medical Center, Hettinger |
| |
| OR |
| Interpath Laboratories, Inc., Pendleton |
| Providence St. Vincent Medical Center, Portland |
| West Valley Hospital, The Dallas |
| |
| TN |
| Williamson Medical Center, Franklin |
| |
| WI |
| Franciscan Skemp Healthcare, La Crosse |
| St. Croix Regional Medical Center, St. Croix |
| Tomah Memorial Hospital, Tomah |
| |
