| Abrazo Arrowhead Hospital | Glendale, AZ | Acute Care Hospitals | 2 stars |
| Abrazo Scottsdale Campus | Phoenix, AZ | Acute Care Hospitals | 3 stars |
| Abrazo West Campus | Goodyear, AZ | Acute Care Hospitals | 2 stars |
| Acadian Medical Center | Eunice, LA | Acute Care Hospitals | 3 stars |
| Ad Hospital East, LLC | Houston, TX | Acute Care Hospitals | Not rated |
| Adcare Hospital of Worcester Inc | Worcester, MA | Acute Care Hospitals | Not rated |
| Advanced Dallas Hospitals and Clinics | Dallas, TX | Acute Care Hospitals | Not rated |
| Adventhealth Dade City | Dade City, FL | Acute Care Hospitals | 4 stars |
| Adventhealth Heart of Florida | Davenport, FL | Acute Care Hospitals | 3 stars |
| Adventhealth Lake Wales | Lake Wales, FL | Acute Care Hospitals | 2 stars |
| Adventhealth Port Charlotte | Port Charlotte, FL | Acute Care Hospitals | 1 star |
| Adventhealth Redmond | Rome, GA | Acute Care Hospitals | 4 stars |
| Adventist Health Delano | Delano, CA | Acute Care Hospitals | 2 stars |
| Adventist Health Sierra Vista | San Luis Obispo, CA | Acute Care Hospitals | 3 stars |
| Adventist Health Twin Cities | Templeton, CA | Acute Care Hospitals | 2 stars |
| Aeries Healthcare of Illinois, Inc., DBA Riveredge Hospital | Forest Park, IL | Psychiatric | Not rated |
| Affiliate of Vitruvian Health | Cleveland, TN | Acute Care Hospitals | 2 stars |
| Agave Ridge Behavioral Hospital | Mesa, AZ | Psychiatric | Not rated |
| AHMC Seton Medical Center | Daly City, CA | Acute Care Hospitals | 1 star |
| AHN Emerus Westmoreland, LLC | Greensburg, PA | Acute Care Hospitals | Not rated |
| Aiken Regional Medical Center | Aiken, SC | Acute Care Hospitals | 2 stars |
| Alaska Regional Hospital | Anchorage, AK | Acute Care Hospitals | 1 star |
| Alexandria Hospital | Alexandria, LA | Acute Care Hospitals | Not rated |
| Alhambra Hospital Medical Center | Alhambra, CA | Acute Care Hospitals | 4 stars |
| Aliso Ridge Behavioral Health, LLC | Aliso Viejo, CA | Psychiatric | Not rated |
| Allegiance Behavioral Health Center of Plainview | Plainview, TX | Psychiatric | Not rated |
| Allegiance Specialty Hospital of Greenville | Greenville, MS | Long-term | Not rated |
| Alliance Health Center | Meridian, MS | Acute Care Hospitals | Not rated |
| Alliance Healthcare System, Inc | Holly Springs, MS | Acute Care Hospitals | Not rated |
| Alliancehealth Durant | Durant, OK | Acute Care Hospitals | 1 star |
| Alta Vista Regional Hospital | Las Vegas, NM | Critical Access Hospitals | Not rated |
| Altus Houston Hospital, LP | Houston, TX | Acute Care Hospitals | Not rated |
| Altus Lumberton Hospital | Lumberton, TX | Acute Care Hospitals | Not rated |
| Anaheim Community Hospital, LLC | Anaheim, CA | Acute Care Hospitals | Not rated |
| Anaheim Global Medical Center | Anaheim, CA | Acute Care Hospitals | 2 stars |
| Andalusia Health | Andalusia, AL | Acute Care Hospitals | 2 stars |
| Anderson Regional Medical Center South Campus | Meridian, MS | Acute Care Hospitals | Not rated |
| Apollo Behavioral Health Hospital, L L C | Baton Rouge, LA | Psychiatric | Not rated |
| Appalachian Behavioral Health Care | Athens, OH | Psychiatric | Not rated |
| Arbour Hospital | Boston, MA | Psychiatric | Not rated |
| Arbour Human Resource Institute | Brookline, MA | Psychiatric | Not rated |
| Arbour-Fuller Hospital | South Attleboro, MA | Psychiatric | Not rated |
| Arizona Orthopedic and Surgical Specialty Hospital | Phoenix, AZ | Acute Care Hospitals | Not rated |
| Arkansas Heart Hospital, LLC | Little Rock, AR | Acute Care Hospitals | 3 stars |
| Arkansas Heart Hospital-Encore | Bryant, AR | Acute Care Hospitals | 2 stars |
| Arrowhead Behavioral Health | Maumee, OH | Psychiatric | Not rated |
| Ascension Saint Thomas Behavioral Health Hospital | Nashville, TN | Psychiatric | Not rated |
| Ascension Wisconsin Hosp Menomonee Falls Campus | Menomonee Falls, WI | Acute Care Hospitals | Not rated |
| Ascentist Hospital LLC | Leawood, KS | Acute Care Hospitals | Not rated |
| Ashley Regional Medical Center | Vernal, UT | Acute Care Hospitals | 4 stars |