| Carnegie Tri-County Municipal Hospital | Carnegie, OK | Critical Access Hospitals | Not rated |
| Carolina East Medical Center | New Bern, NC | Acute Care Hospitals | 4 stars |
| Carolinas Medical Center-Northeast | Concord, NC | Acute Care Hospitals | 4 stars |
| Carolinas Medical Center/Behav Health | Charlotte, NC | Acute Care Hospitals | 4 stars |
| Cascade Medical Center | Cascade, ID | Rural Emergency Hospital | Not rated |
| Cascade Medical Center | Leavenworth, WA | Critical Access Hospitals | Not rated |
| Cascade Valley Hospital | Arlington, WA | Acute Care Hospitals | 4 stars |
| Casey County Hospital | Liberty, KY | Critical Access Hospitals | 3 stars |
| Centennial Peaks Hospital | Louisville, CO | Psychiatric | Not rated |
| Centracare - Benson | Benson, MN | Critical Access Hospitals | Not rated |
| Chatuge Regional Hospital | Hiawassee, GA | Critical Access Hospitals | Not rated |
| Cherokee Medical Center | Gaffney, SC | Acute Care Hospitals | 2 stars |
| Chesapeake General Hospital | Chesapeake, VA | Acute Care Hospitals | 3 stars |
| Childress Regional Medical Center | Childress, TX | Acute Care Hospitals | Not rated |
| Cimarron Memorial Hospital | Boise City, OK | Critical Access Hospitals | Not rated |
| Citizens Medical Center | Columbia, LA | Acute Care Hospitals | 3 stars |
| Citizens Memorial Hospital | Bolivar, MO | Acute Care Hospitals | 3 stars |
| Claiborne Memorial Medical Center | Homer, LA | Acute Care Hospitals | 1 star |
| Clay County Hospital | Ashland, AL | Acute Care Hospitals | Not rated |
| Cleveland Area Hospital | Cleveland, OK | Critical Access Hospitals | Not rated |
| Clinch Memorial Hospital | Homerville, GA | Critical Access Hospitals | Not rated |
| Coalinga Regional Medical Center | Coalinga, CA | Critical Access Hospitals | Not rated |
| Cody Regional Health | Cody, WY | Critical Access Hospitals | 3 stars |
| Coffee Regional Medical Center, Inc | Douglas, GA | Acute Care Hospitals | 3 stars |
| Cogdell Memorial Hospital | Snyder, TX | Critical Access Hospitals | Not rated |
| Colquitt Regional Medical Center | Moultrie, GA | Acute Care Hospitals | 4 stars |
| Columbia Basin Hospital | Ephrata, WA | Critical Access Hospitals | Not rated |
| Community Hospital, Onaga and St Marys Campus | Onaga, KS | Critical Access Hospitals | Not rated |
| Community Memorial Hospital | South Hill, VA | Acute Care Hospitals | 4 stars |
| Connally Memorial Medical Center | Floresville, TX | Acute Care Hospitals | 3 stars |
| Cook Hospital | Cook, MN | Critical Access Hospitals | Not rated |
| Coon Memorial Hospital | Dalhart, TX | Critical Access Hospitals | Not rated |
| Coosa Valley Medical Center | Sylacauga, AL | Acute Care Hospitals | 3 stars |
| Coquille Valley Hospital | Coquille, OR | Critical Access Hospitals | Not rated |
| Cordell Memorial Hospital | Cordell, OK | Critical Access Hospitals | Not rated |
| Coryell Memorial Hospital | Gatesville, TX | Critical Access Hospitals | Not rated |
| Coulee Medical Center | Grand Coulee, WA | Critical Access Hospitals | Not rated |
| Cozad Community Hospital | Cozad, NE | Critical Access Hospitals | Not rated |
| Crane County Hospital District | Crane, TX | Critical Access Hospitals | Not rated |
| Crawford Memorial Hospital | Robinson, IL | Critical Access Hospitals | 4 stars |
| Crenshaw Community Hospital | Luverne, AL | Critical Access Hospitals | Not rated |
| Crook County Hospital | Sundance, WY | Critical Access Hospitals | Not rated |
| Cuero Regional Hospital | Cuero, TX | Acute Care Hospitals | 4 stars |
| Cullman Regional Medical Center | Cullman, AL | Acute Care Hospitals | 2 stars |
| Curry General Hospital | Gold Beach, OR | Critical Access Hospitals | 2 stars |
| Cuyuna Regional Medical Center | Crosby, MN | Critical Access Hospitals | 3 stars |
| D W McMillan Memorial Hospital | Brewton, AL | Acute Care Hospitals | 1 star |
| Dale Medical Center | Ozark, AL | Acute Care Hospitals | Not rated |
| Dayton General Hospital | Dayton, WA | Critical Access Hospitals | Not rated |
| Dch Regional Medical Center | Tuscaloosa, AL | Acute Care Hospitals | 2 stars |