| Canyon Ridge Hospital | Chino, CA | Psychiatric | Not rated |
| Capitol Park Mental Health Hospital | Saint Paul, MN | Psychiatric | Not rated |
| Carewell Health Medical Center | East Orange, NJ | Acute Care Hospitals | 1 star |
| Caribbean Medical Center | Fajardo, PR | Acute Care Hospitals | Not rated |
| Carney Hospital | Boston, MA | Acute Care Hospitals | Not rated |
| Carolina Ctr for Behavioral Health,the | Greer, SC | Psychiatric | Not rated |
| Carolina Pines Regional Medical Center | Hartsville, SC | Acute Care Hospitals | 2 stars |
| Carrollton Regional Medical Center | Carrollton, TX | Acute Care Hospitals | 2 stars |
| Carrollton Springs | Carrollton, TX | Psychiatric | Not rated |
| Carrus Behavioral Hospital | Sherman, TX | Psychiatric | Not rated |
| Carrus Lakeside Hospital | Bristow, OK | Acute Care Hospitals | Not rated |
| Carteret General Hospital | Morehead City, NC | Acute Care Hospitals | 2 stars |
| Castleview Hospital | Price, UT | Acute Care Hospitals | 2 stars |
| Cedar Creek Hospital | Saint Johns, MI | Psychiatric | Not rated |
| Cedar Crest Hospital & Rtc | Belton, TX | Psychiatric | Not rated |
| Cedar Hills Hospital | Portland, OR | Psychiatric | Not rated |
| Cedar Ridge Behavioral Hospital | Oklahoma City, OK | Psychiatric | Not rated |
| Cedar Springs Hospital | Colorado Springs, CO | Psychiatric | Not rated |
| Cedar-Sinai Marina del Rey Hospital | Marina del Rey, CA | Acute Care Hospitals | 4 stars |
| Centennial Hills Hospital Medical Center | Las Vegas, NV | Acute Care Hospitals | 2 stars |
| Centerpoint Medical Center | Independence, MO | Acute Care Hospitals | 3 stars |
| Centerpointe Hospital | Saint Charles, MO | Psychiatric | Not rated |
| Centerpointe Hospital of Columbia | Columbia, MO | Psychiatric | Not rated |
| Centinela Hospital Medical Center | Inglewood, CA | Acute Care Hospitals | 2 stars |
| Central Desert Behavioral Health Hospital | Albuquerque, NM | Psychiatric | Not rated |
| Central Florida Behavioral Hospital | Orlando, FL | Psychiatric | Not rated |
| Central Florida Lake Monroe Hospital | Sanford, FL | Acute Care Hospitals | 2 stars |
| Centro Medico del Noreste | Fajardo, PR | Acute Care Hospitals | Not rated |
| Centro Medico Wilma N Vazquez | Vega Baja, PR | Acute Care Hospitals | Not rated |
| Centura St. Catherine-Dodge City | Dodge City, KS | Acute Care Hospitals | 3 stars |
| Chapman Global Medical Center | Orange, CA | Acute Care Hospitals | 2 stars |
| Chicago Behavioral Hospital | Des Plaines, IL | Psychiatric | Not rated |
| Children's Hospital of Michigan | Detroit, MI | Childrens | Not rated |
| Chino Valley Medical Center | Chino, CA | Acute Care Hospitals | 4 stars |
| Christus Central Louisiana Surgical Hospital | Alexandria, LA | Acute Care Hospitals | Not rated |
| City of Hope Cancer Center Phoenix | Goodyear, AZ | Acute Care Hospitals | 4 stars |
| Cjw Medical Center | Richmond, VA | Acute Care Hospitals | 4 stars |
| Clarion Psychiatric Center | Clarion, PA | Psychiatric | Not rated |
| Clark Regional Medical Center | Winchester, KY | Acute Care Hospitals | 3 stars |
| Clear Vista Health & Wellness | Lorain, OH | Psychiatric | Not rated |
| Cleveland Emergency Hospital | Humble, TX | Acute Care Hospitals | Not rated |
| Clinch Valley Medical Center | Richlands, VA | Acute Care Hospitals | 3 stars |
| Clive Behavioral Health | Clive, IA | Psychiatric | Not rated |
| Coast Plaza Hospital | Norwalk, CA | Acute Care Hospitals | 1 star |
| Coastal Carolina Hospital | Hardeeville, SC | Acute Care Hospitals | 4 stars |
| Coastal Communities Hospital | Santa Ana, CA | Acute Care Hospitals | 1 star |
| Coastal Harbor Treatment Center | Savannah, GA | Psychiatric | Not rated |
| Coleman County Medical Center Company | Coleman, TX | Critical Access Hospitals | Not rated |
| College Hospital | Cerritos, CA | Psychiatric | Not rated |
| College Hospital Costa Mesa | Costa Mesa, CA | Acute Care Hospitals | Not rated |