- Advocate Childrens Hospital - Park Ridge
- Advocate Christ Medical Center
- Advocate Condell Medical Center
- Advocate Good Samaritan Hospital
- Advocate Good Shepherd Hospital
- Advocate Illinois Masonic Medical Center
- Advocate Lutheran General Hospital
- Advocate Sherman Hospital
- Advocate South Suburban Hospital
- Advocate Trinity Hospital
- Agave Ridge Behavioral Hospital
- AHMC Anaheim Regional Medical Center
- AHMC Seton Medical Center
- AHMC Seton Medical Center Coastside
- AHN Brentwood Neighborhood Hospital
- AHN Grove City
- AHN Harmar Neighborhood Hospital
- AHN Hempfield Neighborhood Hospital
- AHN McCandless Neighborhood Hospital
- AHN Saint Vincent Hospital
- AHN Wexford Hospital
- AHS Sherman Medical Center
- Aiken Regional Medical Centers
- Akron Childrens Hospital
- Akron Childrens Hospital Boardman Campus
- Akron General
- Akron General Lodi Hospital
- Alameda Hospital
- Alaska Psychiatric Institute
- Alaska Regional Hospital