| Lincoln County Medical Center | Ruidoso, NM | Critical Access Hospitals | 2 stars |
| Lincolnhealth | Damariscotta, ME | Critical Access Hospitals | 3 stars |
| Linden Oaks at Edward | Naperville, IL | Psychiatric | Not rated |
| Lindner Center of Hope | Mason, OH | Psychiatric | Not rated |
| Lindsborg Community Hospital | Lindsborg, KS | Critical Access Hospitals | Not rated |
| Linton Hospital - CAH | Linton, ND | Critical Access Hospitals | Not rated |
| Lisbon Area Health Services | Lisbon, ND | Critical Access Hospitals | Not rated |
| Little Colorado Medical Center | Winslow, AZ | Critical Access Hospitals | Not rated |
| Little Falls Hospital | Little Falls, NY | Critical Access Hospitals | 2 stars |
| Little River Memorial Hospital | Ashdown, AR | Critical Access Hospitals | Not rated |
| Littleton Regional Healthcare | Littleton, NH | Critical Access Hospitals | 1 star |
| Livingston Hospital and Healthcare Services, Inc | Salem, KY | Critical Access Hospitals | 4 stars |
| Lodi Community Hospital | Lodi, OH | Critical Access Hospitals | Not rated |
| Logan Health - Chester | Chester, MT | Critical Access Hospitals | Not rated |
| Logan Health - Shelby | Shelby, MT | Critical Access Hospitals | Not rated |
| Logan Health - Whitefish | Whitefish, MT | Critical Access Hospitals | 3 stars |
| Logan Health Medical Center | Kalispell, MT | Acute Care Hospitals | 3 stars |
| Loma Linda University Medical Center | Loma Linda, CA | Acute Care Hospitals | 4 stars |
| Loma Linda University Medical Center-Murrieta | Murrieta, CA | Acute Care Hospitals | 2 stars |
| Lonesome Pine Hospital | Big Stone Gap, VA | Acute Care Hospitals | 4 stars |
| Long Island Community Hospital | Patchogue, NY | Acute Care Hospitals | 4 stars |
| Long Island Jewish Medical Center | New Hyde Park, NY | Acute Care Hospitals | 4 stars |
| Longmont United Hospital | Longmont, CO | Acute Care Hospitals | 3 stars |
| Longs Peak Hospital | Longmont, CO | Acute Care Hospitals | 5 stars |
| Loring Hospital | Sac City, IA | Critical Access Hospitals | Not rated |
| Lourdes Counseling Center | Richland, WA | Psychiatric | Not rated |
| Lowell General Hospital | Lowell, MA | Acute Care Hospitals | 2 stars |
| Lower Bucks Hospital | Bristol, PA | Acute Care Hospitals | 3 stars |
| Loyola Gottlieb Memorial Hospital | Melrose Park, IL | Acute Care Hospitals | 3 stars |
| Loyola University Medical Center | Maywood, IL | Acute Care Hospitals | 2 stars |
| Lucile Salter Packard Children's Hsp at Stanford | Palo Alto, CA | Childrens | Not rated |
| Luminis Health Anne Arundel Medical Center, Inc | Annapolis, MD | Acute Care Hospitals | 3 stars |
| Luminis Health J Kent McNew Family Medical Center | Annapolis, MD | Psychiatric | Not rated |
| Lutheran Hospital | Cleveland, OH | Acute Care Hospitals | 3 stars |
| M Health Fairview Southdale Hospital | Edina, MN | Acute Care Hospitals | 5 stars |
| M Health Fairview St John's Hospital | Maplewood, MN | Acute Care Hospitals | 5 stars |
| M Health Fairview University of Mn Medical Center | Minneapolis, MN | Acute Care Hospitals | 4 stars |
| M Health Fairview Woodwinds Hospital | Woodbury, MN | Acute Care Hospitals | 4 stars |
| Mackinac Straits Hospital and Health Center | Saint Ignace, MI | Critical Access Hospitals | Not rated |
| Macon Community Hospital | Lafayette, TN | Critical Access Hospitals | 3 stars |
| Madera Community Hospital | Madera, CA | Acute Care Hospitals | Not rated |
| Madison Health | London, OH | Acute Care Hospitals | 3 stars |
| Madison Hospital | Madison, MN | Critical Access Hospitals | Not rated |
| Madison Regional Health System | Madison, SD | Critical Access Hospitals | Not rated |
| Madison St Joseph Health Center | Madisonville, TX | Critical Access Hospitals | Not rated |
| Madison Valley Medical Center | Ennis, MT | Critical Access Hospitals | Not rated |
| Magee General Hospital | Magee, MS | Acute Care Hospitals | 2 stars |
| Magruder Hospital | Port Clinton, OH | Critical Access Hospitals | 3 stars |
| Maimonides Medical Center | Brooklyn, NY | Acute Care Hospitals | 2 stars |
| Main Line Hospital Lankenau | Wynnewood, PA | Acute Care Hospitals | 4 stars |