| 701 | 4452 | Memorial Health System Memorial Medical Center Springfield |  | 3651 | 2646 | 2538 | 3879 |
| 702 | 840 | Medstar Health Research Institute (MedStar Washington Hospital Center) | | 579 | 752 | 2538 | 930 |
| 703 | 3958 | MEDNAX Phoenix Perinatal Associates | | 2469 | 1948 | 2538 | 3879 |
| 704 | 1550 | Medical City Hospital | | 1508 | 2209 | 2538 | 1490 |
| 705 | 3909 | Mcleod Health | | 2062 | 1910 | 2538 | 3879 |
| 706 | 3134 | Mclean Hospital | | 3119 | 871 | 2538 | 3879 |
| 707 | 5178 | Mclaughlin Centre for Population Health Risk Assessment |  | 6676 | 5691 | 2538 | 3316 |
| 708 | 450 | McGill University Health Centre | | 842 | 866 | 2538 | 108 |
| 709 | 4707 | McCrone Research Institute | | 6103 | 2872 | 2538 | 3879 |
| 710 | 1093 | Mayo Clinic | | 72 | 10 | 2538 | 3879 |
| 711 | 2596 | Mathematical Sciences Research Institute | | 610 | 523 | 2538 | 3879 |
| 712 | 542 | Mathematica Policy Research | | 1494 | 637 | 830 | 1454 |
| 713 | 5171 | Materials Research Science & Engineering Centers | | 4140 | 3658 | 2538 | 3879 |
| 714 | 87 | Massachusetts General Hospital | | 539 | 106 | 2538 | 10 |
| 715 | 714 | Massachusetts Eye and Ear Infirmary | | 2895 | 834 | 2538 | 408 |
| 716 | 3291 | Masonic Medical Research Laboratory | | 7292 | 3841 | 2538 | 2782 |
| 717 | 3171 | Mason Research Institute | | 4122 | 2382 | 1484 | 3879 |
| 718 | 4559 | Martin's Point Health Care | | 5103 | 2705 | 2538 | 3879 |
| 719 | 536 | Marshfield Clinic | | 1933 | 777 | 1582 | 930 |
| 720 | 1481 | Marlborough Hospital | | 2221 | 1268 | 2538 | 1960 |
| 721 | 7330 | Marion VA Medical Center | | 6580 | 6842 | 2538 | 3879 |
| 722 | 5418 | Marine Spill Response Corporation | | 6260 | 3840 | 2538 | 3879 |
| 723 | 2848 | Marine Mammal Center | | 2903 | 640 | 2538 | 3879 |
| 724 | 237 | Marine Biological Laboratory | | 964 | 307 | 254 | 690 |
| 725 | 4534 | Marcus Institute | | 6475 | 2547 | 2538 | 3879 |
| 726 | 3981 | Mallinckrodt Institute of Radiology | | 4468 | 4515 | 778 | 3879 |
| 727 | 1860 | Maine Medical Center Research Institute | | 4969 | 2981 | 2538 | 1518 |
| 728 | 1299 | Maine Health | | 1771 | 854 | 2538 | 1960 |
| 729 | 5500 | Maine Environmental Policy Institute | | 6997 | 3857 | 2538 | 3879 |
| 730 | 6307 | Maine Center for Cancer Medicine and Blood Disorders | | 7061 | 5101 | 2538 | 3879 |
| 731 | 924 | Maimonides Medical Center Brooklyn New York | | 3327 | 1412 | 1598 | 1490 |
| 732 | 1645 | Magee-Womens Research Institute | | 6138 | 2922 | 2538 | 1057 |
| 733 | 6265 | Lynn Health Science Institute | | 7630 | 6257 | 2538 | 3509 |
| 734 | 259 | Lurie Children's Hospital of Chicago (Children's Memorial Hospital) | | 1458 | 566 | 741 | 324 |
| 735 | 5602 | Luquillo Experimental Forest Long Term Ecological Research Network |  | 3823 | 4336 | 2538 | 3879 |
| 736 | 7179 | Lunar Research Institute | | 7472 | 6481 | 2538 | 3879 |
| 737 | 1193 | Lunar and Planetary Institute | | 262 | 2158 | 2086 | 1556 |
| 738 | 1067 | Ludwig Institute for Cancer Research São Paulo |  | 5123 | 1904 | 2538 | 428 |
| 739 | 696 | Loyola University Medical Center | | 2481 | 836 | 2538 | 390 |
| 740 | 2040 | Loyola Law School los Angeles | | 1267 | 605 | 1848 | 3879 |
| 741 | 732 | Lowell Observatory | | 2221 | 579 | 2024 | 1581 |
| 742 | 2295 | Lovelace Respiratory Research Institute | | 7576 | 3506 | 2411 | 2249 |
| 743 | 3438 | Louisville VA Medical Center | | 6442 | 6006 | 2538 | 1891 |
| 744 | 5126 | Louisville Metabolic and Atherosclerosis Research Center | | 7775 | 7018 | 2538 | 2510 |
| 745 | 1656 | Louisiana Universities Marine Consortium | | 4805 | 1982 | 1684 | 2733 |
| 746 | 781 | Louisiana State University Agricultural Center | | 427 | 514 | 2538 | 1015 |
| 747 | 2445 | Louis Stokes Cleveland VA Medical Center | | 6295 | 6045 | 2538 | 698 |
| 748 | 7709 | Louis A Johnson VA Medical Center Clarksburg | | 6584 | 7487 | 2538 | 3879 |
| 749 | 579 | Los Angeles Biomedical Research Institute | | 4731 | 1853 | 662 | 469 |
| 750 | 26 | Los Alamos National Laboratory | | 246 | 66 | 20 | 62 |
| 751 | 3086 | Long Term Ecological Research Network | | 792 | 913 | 2538 | 3879 |
| 752 | 1566 | Long Beach Memorial Medical Center | | 1341 | 931 | 2538 | 2510 |
| 753 | 322 | London Health Sciences Centre | | 1129 | 901 | 166 | 438 |
| 754 | 6476 | Lithuanian Research and Studies Center Chicago | | 4893 | 5573 | 2538 | 3879 |
| 755 | 6969 | Lincoln Medical and Mental Health Center | | 7155 | 6193 | 2538 | 3879 |
| 756 | 1883 | Lifespan | | 1703 | 807 | 475 | 3879 |
| 757 | 724 | Library of Congress | | 9 | 5 | 2394 | 3879 |
| 758 | 4457 | Lexington VA Medical Center | | 6479 | 6436 | 2538 | 2555 |
| 759 | 6237 | Lebanon VA Medical Center | | 6138 | 7193 | 2538 | 3191 |
| 760 | 6375 | Learning Research & Development Center | | 4049 | 5466 | 2538 | 3879 |
| 761 | 3699 | Lean Construction Institute | | 3025 | 1549 | 2538 | 3879 |
| 762 | 1396 | Lawson Health Research Institute | | 4255 | 2339 | 2538 | 916 |
| 763 | 4945 | Lawrenceville Plasma Physics Fusion | | 4402 | 3337 | 2538 | 3879 |
| 764 | 33 | Lawrence Livermore National Laboratory | | 260 | 70 | 58 | 85 |
| 765 | 11 | Lawrence Berkeley National Laboratory | | 37 | 26 | 5 | 21 |
| 766 | 5161 | Las Vegas Skin & Cancer Clinics Ltd | | 5188 | 3569 | 2538 | 3879 |
| 767 | 1708 | Las Campanas Observatory |  | 2707 | 1924 | 2538 | 1934 |
| 768 | 2169 | Lankenau Institute for Medical Research | | 7984 | 4962 | 1780 | 1649 |
| 769 | 2819 | Land Institute | | 5506 | 1043 | 2304 | 3879 |
| 770 | 7637 | Lake Champlain Gynecologic Oncology | | 7676 | 7254 | 2538 | 3879 |
| 771 | 1292 | Lahey Clinic Medical Center | | 1624 | 1026 | 1451 | 2867 |
| 772 | 7921 | Lafayette Clinic | | 7864 | 7767 | 2538 | 3879 |
| 773 | 5031 | Lady Davis Institute for Medical Research | | 4847 | 3419 | 2538 | 3879 |
| 774 | 4079 | Laboratorio Tecnológico del Uruguay |  | 845 | 2289 | 2538 | 3879 |
| 775 | 7939 | Laboratorio para el Estudio de las Funciones Cerebrales Superiores |  | 7945 | 7743 | 2538 | 3879 |
| 776 | 2127 | Laboratório Nacional de Luz Síncrotron | | 5230 | 2639 | 2538 | 2124 |
| 777 | 708 | Laboratório Nacional de Computação Científica | | 612 | 1196 | 677 | 1419 |
| 778 | 4739 | Laboratório Nacional de Astrofísica | | 4459 | 5862 | 2538 | 3140 |
| 779 | 7955 | Laboratorio Internacional de Investigación del Cambio Global | | 8011 | 7724 | 2538 | 3879 |
| 780 | 717 | La Jolla Institute for Allergy & Immunology | | 4947 | 2306 | 330 | 665 |
| 781 | 5773 | La Jolla Bioengineering Institute | | 7712 | 6559 | 2538 | 3191 |
| 782 | 6310 | La Familia Medical Center | | 7068 | 5106 | 2538 | 3879 |
| 783 | 7442 | Kushner Electroplating School | | 7775 | 6874 | 2538 | 3879 |
| 784 | 5059 | Kuakini Health System | | 4565 | 3479 | 2538 | 3879 |
| 785 | 5488 | Kronos Early Estrogen Prevention Study (Kronos Longevity Research Institute) | | 7904 | 3482 | 2538 | 3879 |
| 786 | 1303 | Kingston General Hospital | | 2442 | 2323 | 2538 | 780 |
| 787 | 4994 | Kestrel Institute | | 5062 | 3345 | 2538 | 3879 |
| 788 | 2421 | Kessler Rehabilitation Corporation | | 6351 | 2473 | 2538 | 2584 |
| 789 | 2930 | Kessler Foundation | | 3920 | 1831 | 1630 | 3879 |
| 790 | 3207 | Kerlan-Jobe Orthopaedic Clinic | | 6890 | 3288 | 2538 | 2981 |
| 791 | 4243 | Kentucky Science Center Louisville | | 6716 | 2050 | 2538 | 3879 |
| 792 | 304 | Kennedy Krieger Institute | | 2023 | 644 | 151 | 580 |
| 793 | 4231 | Kelsey-Seybold Clinic | | 2876 | 2364 | 2538 | 3879 |
| 794 | 4196 | Kantar Health (Consumer Health Sciences) | | 4514 | 2154 | 2538 | 3879 |
| 795 | 3538 | Kansas Health Institute | | 2310 | 1383 | 2538 | 3879 |
| 796 | 4332 | Kansas City VA Medical Center | | 7149 | 7061 | 2538 | 1960 |
| 797 | 163 | Kaiser Permanente | | 117 | 96 | 2538 | 119 |
| 798 | 565 | Joslin Diabetes Center & Joslin Clinic | | 1958 | 388 | 2538 | 579 |
| 799 | 5081 | Joseph W. Jones Ecological Research Center | | 8011 | 4210 | 2179 | 3879 |
| 800 | 7654 | Joint Replacement Institute | | 7598 | 7312 | 2538 | 3879 |
