| MILLCREEK COMMUNITY HOSPITAL | ERIE | PA | 138 |
| MILLE LACS HOSPITAL | ONAMIA | MN | 28 |
| MILLER COUNTY HOSPITAL | COLQUITT | GA | 43 |
| MILLINOCKET REGIONAL HOSPITAL | MILLINOCKET | ME | 42 |
| MILLS MEMORIAL HOSPITAL | SAN MATEO | CA | 153 |
| MILLS PENINSULA MEDICAL CENTER | BURLINGAME | CA | 241 |
| MILTON S. HERSHEY MEDICAL CENTER | HERSHEY | PA | 645 |
| MIMBRES MEMORIAL HOSPITAL | DEMING | NM | 49 |
| MINDEN MEDICAL CENTER | MINDEN | LA | 129 |
| MINERAL COMMUNITY HOSPITAL | SUPERIOR | MT | 10 |
| MINERS COLFAX MEDICAL CENTER | RATON | NM | 36 |
| MINERS HOSPITAL | HASTINGS | PA | 30 |
| MINERS MEMORIAL MEDICAL CENTER | COALDALE | PA | 49 |
| MINIDOKA MEMORIAL HOSPITAL | RUPERT | ID | 21 |
| MINIMALLY INVASIVE SURGERY HOSPITAL | LENEXA | KS | 9 |
| MINNEOLA DISTRICT HOSPITAL | MINNEOLA | KS | 15 |
| MINNESOTA VALLEY HEALTH CENTER INC. | LE SUEUR | MN | 16 |
| MINNIE G. BOSWELL MEMORIAL HOSPITAL | GREENSBORO | GA | 28 |
| MIRACLE MILE MEDICAL CENTER | 6000 SAN VICENTE BOULEVARD | CA | 17 |
| MISSION BAY MEMORIAL HOSPITAL | SAN DIEGO | CA | 90 |
| MISSION COMMUNITY HOSPITAL | PANORAMA CITY | CA | 145 |
| MISSION HILL MEMORIAL HOSPITAL | SHAWNEE | OK | 62 |
| MISSION HOSPITAL | ASHEVILLE | NC | 757 |
| MISSION HOSPITAL REG MEDICAL CENTER | MISSION VIEJO | CA | 311 |
| MISSION REGIONAL MEDICAL CENTER | MISSION | TX | 204 |
| MISSISSIPPI METHODIST REHAB CENTER | JACKSON | MS | 31 |
| MISSOURI BAPTIST HOSPITAL SULLIVAN | SULLIVAN | MO | 35 |
| MISSOURI BAPTIST MEDICAL CENTER | ST. LOUIS | MO | 412 |
| MISSOURI DELTA MEDICAL CENTER | SIKESTON | MO | 98 |
| MISSOURI RIVER MEDICAL CENTER | FORT BENTON | MO | 11 |
| MITCHELL COUNTY HOSPITAL | CAMILLA | GA | 23 |
| MITCHELL COUNTY HOSPITAL | COLORADO CITY | TX | 28 |
| MITCHELL COUNTY MEMORIAL HOSPITAL | OSAGE | IA | 28 |
| MIZELL MEMORIAL HOSPITAL | OPP | AL | 35 |
| MOBERLY REGIONAL MEDICAL CENTER | MOBERLY | MO | 40 |
| MOBILE INFIRMARY MEDICAL CENTER | MOBILE | AL | 462 |
| MOBRIDGE REGIONAL HOSPITAL | MOBRIDGE | SD | 48 |
| MODESTO REHABILITATION HOSPITAL | MODESTO | CA | 36 |
| MODOC MEDICAL CENTER | ALTURAS | CA | 16 |
| MOFFITT CANCER CENTER | TAMPA | FL | 345 |
| MOHAVE VALLEY HOSPITAL & MEDICAL CTR | BULLHEAD CITY | AZ | 12 |
| MOLOKAI GENERAL HOSPITAL | KAUNAKAKAI | HI | 8 |
| MON HEALTH MARION NEIGHBORHOOD HOSPI | WHITE HALL | WV | 10 |
| MONADNOCK COMMUNITY HOSPTIAL | PETERBOROUGH | NH | 49 |
| MONMOUTH MEDICAL CENTER | LONG BRANCH | NJ | 232 |
| MONMOUTH MEDICAL CENTER SOUTHERN CAM | LAKEWOOD | NJ | 201 |
| MONONGAHELA VALLEY HOSPITAL INC. | MONONGAHELA | PA | 185 |
| MONONGALIA GENERAL HOSPITAL | MORGANTOWN | WV | 160 |
| MONROE CLINIC | MONROE | WI | 58 |
| MONROE COMMUNITY HOSPITAL | ROCHESTER | NY | 5 |
| MONROE COUNTY HOSPITAL | MONROEVILLE | AL | 46 |
| MONROE COUNTY HOSPITAL | FORSYTH | GA | 30 |
| MONROE COUNTY HOSPITAL | ALBIA | IA | 46 |
| MONROE COUNTY MEDICAL CENTER | TOMPKINSVILLE | KY | 49 |
| MONROE HEALTH SERVICES INC. | AMORY | MS | 75 |
| MONROE HOSPITAL | BLOOMINGTON | IN | 32 |
| MONROE HOSPITAL | BLOOMINGTON | IN | 32 |
| MONROE REGIONAL HOSPITAL | MONROE | MI | 146 |
| MONROE SURGICAL HOSPITAL | MONROE | LA | 10 |
| MONROVIA COMMUNITY HOSPITAL | MONROVIA | CA | 49 |
| MONROVIA MEMORIAL HOSPITAL | MONROVIA | CA | 46 |
| MONSOUR MEDICAL CENTER | JEANNETTE | PA | 137 |
| MONTCLAIR COMMUNITY HOSPITAL | MONTCLAIR | NJ | 45 |
| MONTCLAIR HOSPITAL MEDICAL CENTER | MONTCLAIR | CA | 106 |
| MONTEFIORE MEDICAL CENTER | BRONX | NY | 1,428 |
| MONTEFIORE NEW ROCHELLE HOSPITAL | NEW ROCHELLE | NY | 141 |
| MONTEFIORE NYACK HOSPITAL | NYACK | NY | 231 |
| MONTEREY PARK HOSPITAL | MONTEREY PARK | CA | 101 |
| MONTEREY PARK HOSPITAL | MONTEREY PARK | CA | 101 |
| MONTFORT JONES MEMORIAL HOSPITAL | KOSCIUSKO | MS | 61 |
| MONTGOMERY CNTY MEMORIAL HOSPITAL | RED OAK | IA | 40 |
| MONTGOMERY GENERAL HOSPITAL | MONTGOMERY | WV | 55 |
| MONTGOMERY HOSPITAL | NORRISTOWN | PA | 153 |
| MONTICELLO BIG LAKE COMMUNITY HOSPIT | MONTICELLO | MN | 29 |
| MONTROSE MEMORIAL HOSPITAL | MONTROSE | CO | 51 |
| MONUMENT HEALTH RAPID CITY HOSPITAL | RAPID CITY | SD | 416 |
| MONUMENT HEALTH SPEARFISH HOSPITAL | SPEARFISH | SD | 20 |
| MOORE COUNTY HOSP. DBA DUMAS MEM HOS | DUMAS | TX | 25 |
| MOORE MEDICAL CENTER | MOOREOMA CITY | OK | 45 |
| MOREHOUSE GENERAL HOSPITAL | BASTROP | LA | 39 |
| MORENCI AREA HOSPITAL | MORENCI | MICHIGAN | 26 |
| MORENO VALLEY COMMUNITY HOSPITAL | MORENO VALLEY | CA | 101 |
| MORGAN CO. ARH | WEST LIBERTY | KY | 20 |
| MORGAN COUNTY HOSPITAL | MARTINSVILLE | IN | 37 |
| MORGAN COUNTY WAR MEMORIAL HOSPITAL | BERKELEY SPRINGS | WV | 28 |
| MORGAN MEMORIAL HOSPITAL | MADISON | GA | 20 |
| MORRILL COUNTY COMMUNITY HOSPITAL | BRIDGEPORT | NE | 20 |
| MORRIS COUNTY HOSPITAL | COUNCIL GROVE | KS | 28 |
| MORRIS HOSPITAL | MORRIS | IL | 89 |
| MORRISON COMMUNITY HOSPITAL | MORRISON | IL | 48 |
| MORRISTOWN MEDICAL CENTER | MORRISTOWN | NJ | 732 |
| MORRISTOWN-HAMBLEN HOSPITAL | MORRISTOWN | TN | 100 |
| MORROW COUNTY HOSPITAL | MOUNT GILEAD | OH | 55 |
| MORTON COUNTY HEALTH SYSTEM | ELKHART | KS | 26 |
| MORTON GENERAL HOSPITAL | MORTON | WA | 19 |
| MORTON PLANT HOSPITAL | CLEARWATER | FL | 569 |
| MORTON PLANT NORTH BAY HOSPITAL | NEW PORT RICHEY | FL | 216 |
| MOSAIC MEDICAL CENTER - MARYVILLE | MARYVILLE | MO | 21 |
| MOSES TAYLOR HOSPITAL | SCRANTON | PA | 100 |
| MOSES-LUDINGTON HOSPITAL | TICONDEROGA | NY | 39 |