- Clara Barton Medical Center
- Clara Maass Medical Center
- Clarinda Regional Health Center
- Clarion Hospital
- Clarion Psychiatric Center
- Clarity Child Guidance Center
- Clarke County Hospital
- Clark Fork Valley Hospital
- Clarks Summit State Hospital
- Claxton-Hepburn Medical Center
- Clay County Hospital
- Clay County Hospital
- Clay County Medical Center
- Clay County Memorial Hospital
- Clear Lake Campus Hospital Pediatric Services
- ClearSky Rehabilitation Hospital of Avondale
- ClearSky Rehabilitation Hospital of Baytown
- ClearSky Rehabilitation Hospital of Elwood-St Joseph
- ClearSky Rehabilitation Hospital of Flower Mound
- ClearSky Rehabilitation Hospital of Harker Heights
- ClearSky Rehabilitation Hospital of Kenosha
- ClearSky Rehabilitation Hospital of Lancaster
- ClearSky Rehabilitation Hospital of Lecanto
- ClearSky Rehabilitation Hospital of Mansfield
- ClearSky Rehabilitation Hospital of Rio Rancho
- ClearSky Rehabilitation Hospital of Waxahachie
- ClearSky Rehabilitation Hospital of Weatherford
- ClearVista Behavioral Health
- Clearwater Valley Health
- Cleveland Area Hospital