| Caldwell Medical Center | Princeton, KY | Critical Access Hospitals | Not rated |
| Calhoun-Liberty Hospital | Blountstown, FL | Critical Access Hospitals | Not rated |
| California Pacific Medical Center- Van Ness Campus | San Francisco, CA | Acute Care Hospitals | 3 stars |
| Cambridge Medical Center | Cambridge, MN | Acute Care Hospitals | 4 stars |
| Camden Clark Medical Center | Parkersburg, WV | Acute Care Hospitals | 2 stars |
| Cameron Health | Angola, IN | Critical Access Hospitals | 3 stars |
| Cameron Regional Medical Center | Cameron, MO | Acute Care Hospitals | 1 star |
| Candler Hospital | Savannah, GA | Acute Care Hospitals | 2 stars |
| Cannon Memorial Hospital | Pickens, SC | Acute Care Hospitals | Not rated |
| Canonsburg General Hospital | Canonsburg, PA | Acute Care Hospitals | 3 stars |
| Canton-Potsdam Hospital | Potsdam, NY | Acute Care Hospitals | 2 stars |
| Cape Canaveral Hospital | Cocoa Beach, FL | Acute Care Hospitals | 3 stars |
| Cape Cod Hospital | Hyannis, MA | Acute Care Hospitals | 2 stars |
| Cape Fear Valley Hoke Hospital | Raeford, NC | Acute Care Hospitals | 4 stars |
| Cape Fear Valley Medical Center | Fayetteville, NC | Acute Care Hospitals | 2 stars |
| Cape Fear Valley-Bladen County Hospital | Elizabethtown, NC | Critical Access Hospitals | Not rated |
| Cape Regional Medical Center Inc | Cape May Court House, NJ | Acute Care Hospitals | 3 stars |
| Capital Health Medical Center - Hopewell | Pennington, NJ | Acute Care Hospitals | 2 stars |
| Capital Health Regional Medical Center | Trenton, NJ | Acute Care Hospitals | 2 stars |
| Capital Medical Center | Olympia, WA | Acute Care Hospitals | 3 stars |
| Carepoint Health - Bayonne Medical Center | Bayonne, NJ | Acute Care Hospitals | 1 star |
| Carilion Franklin Memorial Hospital | Rocky Mount, VA | Acute Care Hospitals | 4 stars |
| Carilion Giles Community Hospital | Pearisburg, VA | Critical Access Hospitals | 4 stars |
| Carilion Medical Center | Roanoke, VA | Acute Care Hospitals | 3 stars |
| Carilion New River Valley Medical Center | Christiansburg, VA | Acute Care Hospitals | 4 stars |
| Carilion Stonewall Jackson Hospital | Lexington, VA | Critical Access Hospitals | 3 stars |
| Carle Eureka Hospital | Eureka, IL | Critical Access Hospitals | Not rated |
| Carle Foundation Hospital | Urbana, IL | Acute Care Hospitals | 2 stars |
| Carle Health Methodist Hospital | Peoria, IL | Acute Care Hospitals | 2 stars |
| Carle Health Pekin Hospital | Pekin, IL | Acute Care Hospitals | 3 stars |
| Carle Health Proctor Hospital | Peoria, IL | Acute Care Hospitals | 3 stars |
| Carle Hoopeston Regional Health Center | Hoopeston, IL | Critical Access Hospitals | Not rated |
| Carle Richland Memorial Hospital | Olney, IL | Critical Access Hospitals | 2 stars |
| Carlinville Area Hospital | Carlinville, IL | Critical Access Hospitals | 2 stars |
| Caromont Regional Medical Center | Gastonia, NC | Acute Care Hospitals | 4 stars |
| Carrington Health Center | Carrington, ND | Critical Access Hospitals | Not rated |
| Carroll County Memorial Hospital | Carrollton, KY | Critical Access Hospitals | Not rated |
| Carroll County Memorial Hospital | Carrollton, MO | Critical Access Hospitals | Not rated |
| Carroll Hospital Center | Westminster, MD | Acute Care Hospitals | 3 stars |
| Carson Tahoe Regional Medical Center | Carson City, NV | Acute Care Hospitals | 2 stars |
| Carson Valley Health | Gardnerville, NV | Critical Access Hospitals | 5 stars |
| Carthage Area Hospital, Inc | Carthage, NY | Critical Access Hospitals | Not rated |
| Carthage Area Hospital, Inc | Ogdensburg, NY | Critical Access Hospitals | Not rated |
| Casa Colina Hospital | Pomona, CA | Acute Care Hospitals | Not rated |
| Cassia Regional Hospital | Burley, ID | Critical Access Hospitals | 3 stars |
| Catalina Island Medical Center | Avalon, CA | Critical Access Hospitals | Not rated |
| Catholic Medical Center | Manchester, NH | Acute Care Hospitals | 4 stars |
| Cavalier County Memorial Hospital Association | Langdon, ND | Critical Access Hospitals | Not rated |
| Caverna Memorial Hospital | Horse Cave, KY | Critical Access Hospitals | Not rated |
| Cayuga Medical Center at Ithaca | Ithaca, NY | Acute Care Hospitals | 3 stars |