- 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
- Cleveland Clinic Childrens Hospital for Rehabilitation
- Cleveland Clinic Childrens Inpatient Hospital
- Cleveland Clinic Florida - Weston
- Cleveland Clinic Indian River Hospital
- Cleveland Clinic Main Campus
- Cleveland Clinic Martin North Hospital
- Cleveland Clinic Martin South Hospital
- Cleveland Clinic Mercy Hospital
- Cleveland Clinic Rehabilitation Hospital - Avon
- Cleveland Clinic Rehabilitation Hospital - Beachwood
- Cleveland Clinic Rehabilitation Hospital - Edwin Shaw
- Cleveland Clinic Tradition Hospital
- Cleveland Heights Behavioral Health Hospital
- Clifton Springs Hospital & Clinic
- Clifton T Perkins Hospital Center
- Clinch Memorial Hospital
- Clinch Valley Medical Center
- Clinton Memorial Hospital