- Mercy Orthopedic Hospital Fort Smith
- Mercy Orthopedic Hospital Springfield
- Mercy Regional Medical Center
- Mercy Rehabilitation Hospital Fort Smith
- Mercy Rehabilitation Hospital - Northwest Arkansas
- Mercy Rehabilitation Hospital Oklahoma City
- Mercy Rehabilitation Hospital Oklahoma City South
- Mercy Rehabilitation Hospital South
- Mercy Rehabilitation Hospital Springfield
- Mercy Rehabilitation Hospital St Louis
- Mercy San Juan Medical Center
- Mercy Specialty Hospital - Southeast Kansas
- Mercy St Francis Hospital
- Meridian Health Services Muncie Campus
- Meridian Hospital
- Merit Health Central
- Merit Health Madison
- Merit Health Natchez
- Merit Health Rankin
- Merit Health River Oaks
- Merit Health River Region
- Merit Health Wesley
- Merit Health Womans Hospital
- Meritus Medical Center
- Merrick Medical Center
- Mesa Springs
- Mesa View Regional Hospital
- Mesilla Valley Hospital
- Mesquite Rehabilitation Institute
- Mesquite Specialty Hospital