- INTEGRIS Health Grove Hospital
- INTEGRIS Health Ponca City Hospital
- INTEGRIS Health Woodward Hospital
- INTEGRIS Jim Thorpe Rehabilitation
- INTEGRIS Miami Hospital
- INTEGRIS Southwest Medical Center
- Intensive Specialty Hospital - Bossier City Campus
- Intensive Specialty Hospital - North Campus
- Intensive Specialty Hospital - Pierremont Campus
- Intensive Specialty Hospital - Shreveport Campus
- Interfaith Medical Center
- Intermountain Health Good Samaritan Hospital
- Intermountain Health Lutheran Hospital
- Intermountain Health Platte Valley Hospital
- Intermountain Health Saint Joseph Hospital
- Intermountain Hospital
- Intermountain Layton Hospital
- Intermountain Medical Center
- Intermountain Spanish Fork Hospital
- IOWA Health & Human Services
- Iowa Medical and Classification Center
- Iowa Methodist Medical Center
- Iowa Specialty Hospital - Belmond
- Iowa Specialty Hospital - Clarion
- Iraan General Hospital District
- Ira Davenport Memorial Hospital
- Iredell Davis
- Iredell Memorial Hospital
- Iron County Medical Center
- Iroquois Memorial Hospital