| Mountainview Medical Center | White Sulphur Spring, MT | Critical Access Hospitals | Not rated |
| Mountrail County Medical Center Inc | Stanley, ND | Critical Access Hospitals | Not rated |
| Mt Ascutney Hospital | Windsor, VT | Critical Access Hospitals | Not rated |
| Mt San Rafael Hospital | Trinidad, CO | Critical Access Hospitals | 5 stars |
| Mt Sinai Hospital Medical Center | Chicago, IL | Acute Care Hospitals | 1 star |
| Multicare Auburn Medical Center | Auburn, WA | Acute Care Hospitals | 2 stars |
| Multicare Covington Medical Center | Covington, WA | Acute Care Hospitals | 3 stars |
| Multicare Good Samaritan Hospital | Puyallup, WA | Acute Care Hospitals | 2 stars |
| Multicare Valley Hospital | Spokane Valley, WA | Acute Care Hospitals | 5 stars |
| Munising Memorial Hospital | Munising, MI | Critical Access Hospitals | Not rated |
| Munson Healthcare Otsego Memorial Hospital | Gaylord, MI | Acute Care Hospitals | 4 stars |
| MUSC Health Columbia Medical Center Downtown | Columbia, SC | Acute Care Hospitals | 3 stars |
| Mymichigan Medical Center Alma | Alma, MI | Acute Care Hospitals | 4 stars |
| Mymichigan Medical Center Gladwin | Gladwin, MI | Critical Access Hospitals | Not rated |
| Nantucket Cottage Hospital | Nantucket, MA | Acute Care Hospitals | 3 stars |
| Naples Community Hospital | Naples, FL | Acute Care Hospitals | 3 stars |
| Natchaug Hospital | Mansfield Center, CT | Psychiatric | Not rated |
| Nathan Littauer Hospital | Gloversville, NY | Acute Care Hospitals | 2 stars |
| National Jewish Health | Denver, CO | Acute Care Hospitals | Not rated |
| Nationwide Children's Hospital | Columbus, OH | Childrens | Not rated |
| Nationwide Children's Hospital Toledo, LLC | Toledo, OH | Childrens | Not rated |
| Navos - Inpatient Services | Seattle, WA | Psychiatric | Not rated |
| Nazareth Hospital | Philadelphia, PA | Acute Care Hospitals | 2 stars |
| Nelson County Health System | McVille, ND | Critical Access Hospitals | Not rated |
| Nemaha Valley Community Hospital | Seneca, KS | Critical Access Hospitals | Not rated |
| Nemours Children's Hospital, Delaware | Wilmington, DE | Childrens | Not rated |
| Nemours Childrens Hospital, Florida | Orlando, FL | Childrens | Not rated |
| Neurobehavioral Hospital of the Palm Beaches-North | Magnonia Park, FL | Psychiatric | Not rated |
| Neurobehavioral Hospital of the Palm Beaches-South | Boynton Beach, FL | Psychiatric | Not rated |
| New England Baptist Hospital | Boston, MA | Acute Care Hospitals | 5 stars |
| New London Hospital | New London, NH | Critical Access Hospitals | 3 stars |
| New Ulm Medical Center | New Ulm, MN | Critical Access Hospitals | 5 stars |
| New York Community Hospital of Brooklyn, Inc. | Brooklyn, NY | Acute Care Hospitals | 1 star |
| New York-Presbyterian Hospital | New York, NY | Acute Care Hospitals | 5 stars |
| New York-Presbyterian/Queens | Flushing, NY | Acute Care Hospitals | 5 stars |
| Newark Beth Israel Medical Center | Newark, NJ | Acute Care Hospitals | 2 stars |
| Newark-Wayne Community Hospital | Newark, NY | Acute Care Hospitals | 2 stars |
| Newport Hospital | Newport, RI | Acute Care Hospitals | 4 stars |
| Newton Medical Center | Newton, NJ | Acute Care Hospitals | 4 stars |
| Newton-Wellesley Hospital | Newton, MA | Acute Care Hospitals | 5 stars |
| Niagara Falls Memorial Medical Center | Niagara Falls, NY | Acute Care Hospitals | 1 star |
| Nicholas H Noyes Memorial Hospital | Dansville, NY | Acute Care Hospitals | 3 stars |
| Nicklaus Children's Hospital | Miami, FL | Childrens | Not rated |
| Niobrara Valley Hospital | Lynch, NE | Critical Access Hospitals | Not rated |
| NMC Health | Newton, KS | Acute Care Hospitals | 5 stars |
| North Arkansas Regional Medical Center | Harrison, AR | Acute Care Hospitals | 2 stars |
| North Baldwin Infirmary | Bay Minette, AL | Acute Care Hospitals | 3 stars |
| North Canyon Medical Center | Gooding, ID | Critical Access Hospitals | Not rated |
| North Carolina Baptist Hospital | Winston-Salem, NC | Acute Care Hospitals | 4 stars |
| North Country Hospital and Health Center | Newport, VT | Critical Access Hospitals | 1 star |