| 501 | 4836 | Texas AgriLife Research |  | 6869 | 2961 | 2538 | 3879 |
| 502 | 518 | Agency for Healthcare Research and Quality | | 279 | 55 | 2538 | 1891 |
| 503 | 3417 | American Institute of Baking | | 2526 | 1223 | 2538 | 3879 |
| 504 | 3545 | Agricultural Institute of Canada |  | 591 | 1523 | 2538 | 3879 |
| 505 | 1954 | American Institute of Mathematics | | 2740 | 1063 | 2538 | 2981 |
| 506 | 5931 | American Institute for Maghrib Studies | | 7502 | 4449 | 2538 | 3879 |
| 507 | 6209 | Alaska Bird Observatory | | 7796 | 4735 | 2538 | 3879 |
| 508 | 4558 | Albany VA Medical Center VA Healthcare Network Upstate New York | | 6992 | 6720 | 2538 | 2408 |
| 509 | 3372 | VA Health Care System New Mexico | | 6638 | 6143 | 2538 | 1701 |
| 510 | 5533 | Instituto Alexander Fleming |  | 5882 | 5584 | 2538 | 3509 |
| 511 | 4233 | Allergy and Asthma Medical Group and Research Center | | 7417 | 5269 | 2538 | 2981 |
| 512 | 4542 | Alliance for Clinical Trials in Oncology (Cancer Leukemia Group B) | | 5007 | 2689 | 2538 | 3879 |
| 513 | 3341 | Altarum Institute | | 3887 | 1081 | 2538 | 3879 |
| 514 | 7711 | VA Health Care System Amarillo | | 7275 | 7446 | 2538 | 3879 |
| 515 | 3716 | Animal Medical Center | | 3449 | 1555 | 2538 | 3879 |
| 516 | 3046 | American Geosciences Institute (American Geological Institute) | | 919 | 874 | 2538 | 3879 |
| 517 | 1588 | Center for American Progress | | 545 | 65 | 2538 | 3879 |
| 518 | 6977 | American Geotechnical | | 7823 | 6010 | 2538 | 3879 |
| 519 | 7896 | Center of Excellence for Limb Loss Prevention and Prosthetic | | 7482 | 7783 | 2538 | 3879 |
| 520 | 5161 | Andrews Sports Medicine And Orthopaedic Center | | 5632 | 3526 | 2538 | 3879 |
| 521 | 3351 | Angiogenesis Foundation | | 6189 | 1980 | 2538 | 3509 |
| 522 | 2071 | VA Healthcare System Ann Arbor | | 6688 | 6005 | 2538 | 352 |
| 523 | 2556 | Academy of Natural Sciences of Philadelphia | | 496 | 506 | 2538 | 3879 |
| 524 | 5191 | Anderson Orthopaedic Research Institute | | 7740 | 4797 | 2538 | 3509 |
| 525 | 3417 | Asia Pacific Center for Security Studies | | 3175 | 1192 | 2538 | 3879 |
| 526 | 4269 | Hospital Dr Luis Sanchez Bulnes Asociación para Evitar la Ceguera en México |  | 6979 | 5511 | 2538 | 2919 |
| 527 | 1664 | American Petroleum Institute | | 953 | 147 | 2538 | 3660 |
| 528 | 4316 | Institute for Applied Ecology | | 4154 | 3331 | 2538 | 3660 |
| 529 | 8051 | Applied Mammal Research Institute | | 7630 | 8032 | 2538 | 3879 |
| 530 | 7916 | Advanced Platform Technology Center | | 6713 | 7862 | 2538 | 3879 |
| 531 | 6893 | AIDS Research Consortium of Atlanta | | 7879 | 5827 | 2538 | 3879 |
| 532 | 1141 | Arkansas Childrens Hospital | | 2633 | 1170 | 2538 | 1088 |
| 533 | 4365 | Arizona Oncology Associates | | 3302 | 2530 | 2538 | 3879 |
| 534 | 7546 | Arkansas Foot and Ankle Clinic | | 7879 | 7003 | 2538 | 3879 |
| 535 | 4823 | US Army Research Laboratory | | 1494 | 3377 | 2538 | 3879 |
| 536 | 7792 | Center for Arson Research | | 7767 | 7509 | 2538 | 3879 |
| 537 | 6010 | Arthritis Research Center Foundation Inc | | 6096 | 4753 | 2538 | 3879 |
| 538 | 4062 | Arthritis Research Centre of Canada | | 4805 | 3802 | 2538 | 3410 |
| 539 | 1104 | Agence Spatiale Canadienne / Canadian Space Agency | | 706 | 336 | 2538 | 2290 |
| 540 | 6169 | VA Medical Center Asheville North Carolina | | 6872 | 6268 | 2538 | 3509 |
| 541 | 2939 | American Sports Medicine Institute | | 7204 | 1905 | 2538 | 3252 |
| 542 | 4262 | Aspen Center for Physics | | 6529 | 2115 | 2538 | 3879 |
| 543 | 4074 | Asphalt Institute | | 5995 | 1879 | 2538 | 3879 |
| 544 | 5901 | Art Science Research Laboratory | | 7230 | 4452 | 2538 | 3879 |
| 545 | 7417 | Aberdeen Test Center | | 7350 | 6918 | 2538 | 3879 |
| 546 | 7118 | Atips Laboratory University of Calgary | | 7954 | 6042 | 2538 | 3879 |
| 547 | 4873 | Atrium Medical Corporation | | 5893 | 3117 | 2538 | 3879 |
| 548 | 1679 | Harvard Vanguard Medical Associates NOW AtriusHealth | | 2450 | 1569 | 2538 | 2104 |
| 549 | 2979 | Audubon Nature Institute | | 4426 | 698 | 2538 | 3879 |
| 550 | 3786 | Pierre Auger Observatory | | 5571 | 1520 | 2538 | 3879 |
| 551 | 3300 | Association of Universities for Research in Astronomy | | 4205 | 1001 | 2538 | 3879 |
| 552 | 6261 | Autonomous Undersea Systems Institute | | 7598 | 4905 | 2538 | 3879 |
| 553 | 4434 | Austen Riggs Center | | 4409 | 2563 | 2538 | 3879 |
| 554 | 2607 | Animal Welfare Institute | | 2972 | 451 | 2538 | 3879 |
| 555 | 6610 | Axio Research Corporation | | 7128 | 5577 | 2538 | 3879 |
| 556 | 6638 | Bay Area Environmental Research Institute | | 7409 | 5582 | 2538 | 3879 |
| 557 | 6143 | New Mexico Petroleum Recovery Research Center | | 7174 | 4822 | 2538 | 3879 |
| 558 | 4398 | CONICET Bahía Blanca | | 5808 | 7655 | 2538 | 1427 |
| 559 | 4424 | Bamfield Marine Sciences Centre | | 4287 | 4086 | 2538 | 3509 |
| 560 | 3422 | Baptist Hospital | | 1724 | 1254 | 2538 | 3879 |
| 561 | 3295 | Barnes Jewish Hospital | | 1868 | 1102 | 2538 | 3879 |
| 562 | 7456 | Barnes Retina Institute | | 8011 | 6625 | 2538 | 3879 |
| 563 | 7732 | Bath VA Medical Center VA Healthcare Network Upstate New York | | 6832 | 7507 | 2538 | 3879 |
| 564 | 7306 | VA Medical Center Battle Creek Michigan | | 6971 | 6767 | 2538 | 3879 |
| 565 | 5504 | Bauu Institute | | 7954 | 3410 | 2538 | 3879 |
| 566 | 5468 | Baylor Jack and Jane Hamilton Heart and Vascular Hospital | | 5311 | 4022 | 2538 | 3879 |
| 567 | 4301 | Bay Medical | | 5965 | 2231 | 2538 | 3879 |
| 568 | 4291 | VA Healthcare System Bay Pines | | 5560 | 6047 | 2538 | 2696 |
| 569 | 7038 | Clínica Bazterrica Clínica Santa Isabel | | 7242 | 6279 | 2538 | 3879 |
| 570 | 5077 | Boston Biomedical Research Institute | | 7589 | 4707 | 2538 | 3509 |
| 571 | 2904 | Bd Biosciences Immunocytometry Systems | | 272 | 833 | 2538 | 3879 |
| 572 | 7634 | VA Medical Center Beckley West Virginia | | 7339 | 7303 | 2538 | 3879 |
| 573 | 3573 | VA Medical Center Bedford Massachusetts | | 6926 | 7024 | 2538 | 1246 |
| 574 | 4171 | Berkshire Health Systems | | 2799 | 2254 | 2538 | 3879 |
| 575 | 3892 | Bernheim Arboretum and Research Forest | | 3148 | 1811 | 2538 | 3879 |
| 576 | 6563 | Bethany Medical Center | | 6929 | 5536 | 2538 | 3879 |
| 577 | 7061 | Black Hills Center for American Indian Health | | 7696 | 6220 | 2538 | 3879 |
| 578 | 7192 | Behavioral Health Research Center Southwest | | 8011 | 6139 | 2538 | 3879 |
| 579 | 219 | Beth Israel Deaconess Medical Center | | 1182 | 312 | 2538 | 53 |
| 580 | 7528 | VA Health Care System West Texas | | 7300 | 7098 | 2538 | 3879 |
| 581 | 7098 | VA Gulf Coast Veterans Health Care System | | 6667 | 6419 | 2538 | 3879 |
| 582 | 1671 | Bedford Institute of Oceanography | | 4328 | 2655 | 2538 | 1351 |
| 583 | 5310 | NIH Department of Clinical Bioethics | | 6531 | 3646 | 2538 | 3879 |
| 584 | 3483 | Biosphere 2 Center | | 6317 | 1132 | 2538 | 3879 |
| 585 | 2548 | Cornell Lab of Ornithology | | 479 | 500 | 2538 | 3879 |
| 586 | 2627 | VA Medical Center Birmingham | | 7086 | 6415 | 2538 | 661 |
| 587 | 7173 | VA Health Care System Black Hills | | 5902 | 6622 | 2538 | 3879 |
| 588 | 2003 | Bloodworks Northwest (Puget Sound Blood Center) | | 4243 | 1513 | 2538 | 2627 |
| 589 | 2236 | VA Boston Healthcare System | | 5535 | 5616 | 2538 | 728 |
| 590 | 1638 | Boys Town National Research Hospital | | 4088 | 1762 | 2538 | 1832 |
| 591 | 4983 | Breault Research Organization | | 3796 | 3429 | 2538 | 3879 |
| 592 | 7934 | IRD au Brésil |  | 4837 | 7937 | 2538 | 3879 |
| 593 | 109 | Brigham and Women's Hospital | | 868 | 188 | 2538 | 11 |
| 594 | 4053 | BioDiversity Research Institute | | 5123 | 1912 | 2538 | 3879 |
| 595 | 2151 | Botanical Research Institute of Texas | | 1221 | 1314 | 2538 | 3076 |
| 596 | 3125 | James J. Peters VA Medical Center Bronx NY | | 6779 | 6927 | 2538 | 839 |
| 597 | 491 | Baylor Scott & White Health | | 434 | 508 | 2538 | 326 |
| 598 | 1277 | Boyce Thompson Institute for Plant Research | | 4011 | 1855 | 2538 | 895 |
| 599 | 3854 | VA Western New York Healthcare System at Buffalo | | 5612 | 6713 | 2538 | 1891 |
| 600 | 6814 | Burzynski Research Institute, Inc | | 7744 | 5771 | 2538 | 3879 |
