- Chandler Regional Medical Center
- ChangePoint Psychiatric Hospital
- Chan Soon-Shiong Medical Center at Windber
- Chapman Global Medical Center
- Charles A Cannon Jr Memorial Hospital
- Charlotte Hungerford Hospital
- Charlton Memorial Hospital
- Chase County Community Hospital
- Chatham Hospital
- Chatuge Regional Hospital
- Chelsea Hospital
- Cherokee Medical Center
- Cherokee Regional Medical Center
- Cherry County Hospital
- Cherry Hospital
- Chesapeake Regional Medical Center
- Cheshire Medical Center
- Chester County Hospital
- Chester Mental Health Center
- Cheyenne County Hospital
- Cheyenne Regional Medical Center - East Campus
- Cheyenne Regional Medical Center - West Campus
- Chicago Behavioral Hospital
- Chicago Read Mental Health Center
- Chicot Memorial Medical Center
- CHI Health Creighton University Medical Center - Bergan Mercy
- CHI Health Good Samaritan
- CHI Health Immanuel
- CHI Health Lakeside
- CHI Health Mercy Corning