| 1801 | 11763 | Mciver Urological Clinic | 11204 | 11942 | 9504 | 2394 |
| 1802 | 3760 | Mcfarlan Clinic Pc | 3347 | 3898 | 4915 | 2394 |
| 1803 | 6672 | Mcduffie Regional Medical Center | 8922 | 5090 | 8651 | 2394 |
| 1804 | 8212 | Mcdowell Hospital of Marion NC | 3401 | 8725 | 9261 | 2394 |
| 1805 | 3199 | Mcdonough District Hospital | 4816 | 3042 | 3630 | 2394 |
| 1806 | 4694 | Mccullough Hyde Memorial Hospital | 8556 | 3561 | 5789 | 2394 |
| 1807 | 11501 | Mccall Memorial Hospital | 13989 | 9382 | 12104 | 2394 |
| 1808 | 4633 | Mcalester Regional Hospital and Medical Center | 6624 | 5230 | 3073 | 2394 |
| 1809 | 5234 | Mayo Regional Hospital in Dover | 9698 | 3357 | 7477 | 2394 |
| 1810 | 4 | Mayo Clinic Scottsdale AZ | 125 | 1 | 987 | 94 |
| 1811 | 936 | Mayo Clinic Health System | 1549 | 795 | 1083 | 2394 |
| 1812 | 7628 | Mayers Memorial Hospital District | 8160 | 9320 | 3850 | 2394 |
| 1813 | 2274 | Maxim Healthcare Services | 8522 | 1134 | 4413 | 2394 |
| 1814 | 646 | Maury Regional Hospital | 3202 | 347 | 2056 | 1328 |
| 1815 | 11441 | Maumee Eye Clinic | 12932 | 11214 | 9261 | 2394 |
| 1816 | 5931 | Maui Memorial Medical Center | 6315 | 5984 | 5959 | 2394 |
| 1817 | 3797 | Matheny Medical and Educational Center | 6624 | 4433 | 4771 | 1328 |
| 1818 | 10801 | Matagorda County Hospital District | 11770 | 11903 | 6059 | 2394 |
| 1819 | 4224 | Mat Su Regional Medical Center | 1624 | 2888 | 10253 | 2394 |
| 1820 | 5870 | Massena Memorial Hospital | 5040 | 6731 | 5071 | 2394 |
| 1821 | 7 | Massachusetts General Hospital | 401 | 20 | 82 | 18 |
| 1822 | 493 | Massachusetts Eye and Ear Infirmary | 1854 | 518 | 615 | 1157 |
| 1823 | 1865 | Massachusetts Alzheimer's Disease Research Center Massachusetts General Hospital | 2821 | 3781 | 2176 | 753 |
| 1824 | 11729 | Massac Memorial Hospital | 9897 | 11544 | 10913 | 2394 |
| 1825 | 1476 | Masonicare Wallingford CT | 3872 | 1689 | 3607 | 860 |
| 1826 | 2564 | Mason General Hospital WA | 6010 | 2162 | 2496 | 2394 |
| 1827 | 7351 | Mason District Hospital St Havana Illinois | 11358 | 4155 | 10913 | 2394 |
| 1828 | 8855 | Maryland District of Columbia Society for Respiratory Care | 12181 | 9921 | 5709 | 1934 |
| 1829 | 8142 | Mary Rutan Hospital | 9981 | 7984 | 7133 | 2394 |
| 1830 | 8214 | Mary Lanning Healthcare | 3858 | 7845 | 10253 | 2394 |
| 1831 | 3090 | Mary Greeley Medical Center | 2511 | 1995 | 9811 | 1815 |
| 1832 | 6611 | Mary Black Health System | 1744 | 6047 | 10913 | 2394 |
| 1833 | 2583 | Mary Bird Perkins Cancer Center | 4152 | 3482 | 3062 | 1328 |
| 1834 | 2821 | Martin Health System | 3780 | 2897 | 3039 | 2394 |
| 1835 | 5920 | Martin General Hospital | 1852 | 5251 | 10253 | 2394 |
| 1836 | 5089 | Martin Army Community Hospital | 8472 | 5140 | 3832 | 2394 |
| 1837 | 3026 | Martha Jefferson Hospital | 2734 | 1188 | 10913 | 2394 |
| 1838 | 242 | Marshfield Clinic | 1692 | 306 | 686 | 458 |
| 1839 | 10120 | Marshalltown Medical and Surgical Center | 6644 | 12085 | 5709 | 2394 |
| 1840 | 2564 | Marshall Medical Placerville CA | 1782 | 2656 | 4305 | 2394 |
| 1841 | 6004 | Marshall Medical Centers | 7035 | 3178 | 10913 | 2394 |
| 1842 | 10570 | Marshall County Hospital | 10175 | 11128 | 8086 | 2394 |
| 1843 | 10555 | Marshall Browning Hospital | 5632 | 10594 | 10913 | 2394 |
| 1844 | 765 | Marquette General Health System Regional Medical Center | 531 | 988 | 472 | 2394 |
| 1845 | 7919 | Marlette Regional Hospital | 7473 | 9873 | 3871 | 2394 |
| 1846 | 8938 | Marlboro Park Hospital | 2088 | 9471 | 10913 | 2394 |
| 1847 | 7014 | Mark Twain Medical Center | 3024 | 9183 | 5488 | 2394 |
| 1848 | 4570 | Marion General Hospital Marion Indiana | 1887 | 5923 | 5127 | 2394 |
| 1849 | 9834 | Marineyes Mission | 9121 | 9780 | 9055 | 2394 |
| 1850 | 4476 | Marina del Rey Hospital | 3118 | 4129 | 7298 | 2394 |
| 1851 | 2971 | Marin General Hospital | 4180 | 2528 | 4392 | 2394 |
| 1852 | 5611 | Marietta Eye Clinic | 6993 | 4616 | 7393 | 2394 |
| 1853 | 1030 | Maricopa Integrated Health System | 2979 | 1393 | 586 | 1739 |
| 1854 | 9462 | Marias Medical Center MT | 11903 | 9534 | 7298 | 2394 |
| 1855 | 3550 | Marian Medical Center Santa Maria CA | 2665 | 4242 | 5597 | 1934 |
| 1856 | 11067 | Marian Community Hospital | 14607 | 10953 | 6757 | 2394 |
| 1857 | 8739 | Marian Clinic | 13331 | 10251 | 5294 | 1328 |
| 1858 | 8303 | Maria Parham Medical Center | 7024 | 9247 | 6619 | 2394 |
| 1859 | 11316 | Margaret Mary Health | 8277 | 12811 | 6677 | 2394 |
| 1860 | 9981 | Marengo Memorial Hospital | 12013 | 9961 | 7846 | 2394 |
| 1861 | 3555 | Marcus Daly Memorial Hospital MT | 4122 | 4772 | 1997 | 2394 |
| 1862 | 10073 | Marcum & Wallace Memorial Hospital | 2678 | 11630 | 9261 | 2394 |
| 1863 | 10691 | Maple Grove Eye Clinic and Opticians | 12684 | 9927 | 9504 | 2394 |
| 1864 | 6820 | Manning Regional Healthcare Center | 7634 | 7450 | 5267 | 2394 |
| 1865 | 5185 | Mankato Clinic | 4963 | 7172 | 2096 | 2394 |
| 1866 | 4287 | Maniilaq Association | 11862 | 3458 | 3029 | 2394 |
| 1867 | 10532 | Manhattan Surgical Center | 13331 | 9842 | 8843 | 2394 |
| 1868 | 7423 | Manchester Memorial Hospital | 4434 | 8613 | 6826 | 2394 |
| 1869 | 4015 | Manatee Memorial Hospital | 7712 | 2967 | 5445 | 2394 |
| 1870 | 5459 | Manatee / Sarasota Eye Clinic | 9446 | 4652 | 5624 | 2394 |
| 1871 | 6881 | Mammoth Hospital | 6638 | 4918 | 10253 | 2394 |
| 1872 | 4940 | Male Fertility Clinic | 6366 | 3669 | 7477 | 2394 |
| 1873 | 5200 | Major Hospital | 10279 | 3798 | 6059 | 2394 |
| 1874 | 4154 | Mainland Medical Center | 1370 | 4684 | 7133 | 2394 |
| 1875 | 422 | Mainehealth | 431 | 519 | 436 | 1815 |
| 1876 | 716 | MaineGeneral Health | 896 | 1208 | 2772 | 622 |
| 1877 | 197 | Maine Medical Center | 220 | 275 | 336 | 857 |
| 1878 | 3548 | Maine Coast Memorial Hospital | 1508 | 4985 | 3985 | 2394 |
| 1879 | 839 | Main Line Health | 529 | 538 | 3715 | 2394 |
| 1880 | 838 | Maimonides Medical Center Brooklyn New York | 643 | 812 | 10253 | 341 |
| 1881 | 10814 | Mahnomen Health Center | 9720 | 10988 | 9261 | 2394 |
| 1882 | 8626 | Mahaska Health Partnership | 3011 | 8438 | 10913 | 2394 |
| 1883 | 9040 | Magruder Hospital | 7199 | 7762 | 10913 | 2394 |
| 1884 | 6004 | Magnolia Regional Health Center | 7995 | 6214 | 4915 | 2394 |
| 1885 | 11477 | Magnolia Hospital | 9516 | 12326 | 8319 | 2394 |
| 1886 | 2574 | Magee Rehabilitation Hospital | 3432 | 2281 | 3832 | 2394 |
| 1887 | 9344 | Magee General Hospital | 6130 | 10514 | 7660 | 2394 |
| 1888 | 4165 | Madonna Rehabilitation Hospital | 2840 | 1753 | 12104 | 2394 |
| 1889 | 9108 | Madison Memorial Hospital ID | 14762 | 4386 | 12104 | 2394 |
| 1890 | 10565 | Madison Medical Center | 13989 | 8956 | 9811 | 2394 |
| 1891 | 10256 | Madison Lutheran Home | 8571 | 11226 | 7660 | 2394 |
| 1892 | 9663 | Madison County Health Care Systems | 11736 | 7595 | 10913 | 2394 |
| 1893 | 9815 | Madison Community Hospital | 12098 | 9101 | 8843 | 2394 |
| 1894 | 890 | Madison Center | 2641 | 1296 | 1105 | 860 |
| 1895 | 3140 | Madigan Army Medical Center | 7449 | 1641 | 7956 | 1934 |
| 1896 | 5971 | Madera Community Hospital | 8752 | 5323 | 6328 | 2394 |
| 1897 | 6979 | Madelia Community Hospital | 7867 | 8516 | 3550 | 2394 |
| 1898 | 5767 | Mad River Community Hospital | 9804 | 5169 | 5325 | 2394 |
| 1899 | 10929 | Macon County General Hospital | 10717 | 10960 | 9261 | 2394 |
| 1900 | 833 | Macneal Hospital | 627 | 2104 | 4991 | 273 |
