| 501 | 6393 | Hydrologic Engineering Center US Army Corps of Engineers |  | 5507 | 5401 | 2538 | 3879 |
| 502 | 6585 | Fort Wayne Neurological Center | | 7721 | 5396 | 2538 | 3879 |
| 503 | 2888 | Centro de Pesquisa Leônidas de Maria Deane |  | 5083 | 5381 | 2242 | 2408 |
| 504 | 5403 | Pacific Rim Conservation | | 6414 | 5377 | 2538 | 3509 |
| 505 | 3704 | Corporacion para Investigaciones Biológicas |  | 3861 | 5371 | 2538 | 2653 |
| 506 | 6442 | Western Montana Clinic | | 6720 | 5364 | 2538 | 3879 |
| 507 | 6557 | New Iberia Research Center | | 7733 | 5352 | 2538 | 3879 |
| 508 | 5026 | DermSurgery Associates | | 5382 | 5341 | 2538 | 3410 |
| 509 | 4904 | Instituto de Ecología y Sistemática |  | 6758 | 5341 | 2538 | 3316 |
| 510 | 6440 | Centre for Innovation Studies Canada |  | 6937 | 5327 | 2538 | 3879 |
| 511 | 6471 | US Army Medical Research Institute of Infectious Diseases | | 7233 | 5322 | 2538 | 3879 |
| 512 | 6310 | Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco CONACYT |  | 4969 | 5311 | 2538 | 3879 |
| 513 | 6412 | Paparella Ear Head and Neck Institute | | 6788 | 5304 | 2538 | 3879 |
| 514 | 6341 | NASA Stennis Space Center | | 5679 | 5303 | 2538 | 3879 |
| 515 | 6293 | Camcare Health Education and Research Institute | | 4884 | 5297 | 2538 | 3879 |
| 516 | 1624 | VA Palo Alto Health Care System | | 5373 | 5290 | 2538 | 233 |
| 517 | 2348 | Instituto de Biología Molecular y Celular de Rosario |  | 4067 | 5283 | 1940 | 2064 |
| 518 | 6346 | Premier Bone & Joint Centers (Gem City Bone and Joint Clinic) | | 5964 | 5281 | 2538 | 3879 |
| 519 | 6711 | CGIAR Systemwide Program on Participatory Research and Gender Analysis | | 8011 | 5279 | 2538 | 3879 |
| 520 | 1948 | Walter Reed Army National Military Medical Center | | 2951 | 5273 | 2538 | 603 |
| 521 | 6149 | Consejo Nicaraguense de Ciencia y Tecnología |  | 2495 | 5272 | 2538 | 3879 |
| 522 | 4233 | Allergy and Asthma Medical Group and Research Center | | 7417 | 5269 | 2538 | 2981 |
| 523 | 6527 | Upstate Freshwater Institute | | 7775 | 5269 | 2538 | 3879 |
| 524 | 6304 | Heritage Research Group | | 5859 | 5240 | 2538 | 3879 |
| 525 | 6447 | Postgraduate Center for Mental Health | | 7580 | 5230 | 2538 | 3879 |
| 526 | 6339 | University of Louisville Department of Surgery | | 6546 | 5227 | 2538 | 3879 |
| 527 | 6295 | Miami Hand Center | | 6045 | 5223 | 2538 | 3879 |
| 528 | 6419 | Instituto Penido Burnier | | 7468 | 5220 | 2538 | 3879 |
| 529 | 6419 | Mississippi Sports Medicine and Orthopaedic Center | | 7472 | 5217 | 2538 | 3879 |
| 530 | 2620 | Minneapolis Medical Research Foundation | | 7193 | 5215 | 2538 | 1351 |
| 531 | 2855 | Instituto de Biologia y Medicina Experimental | | 4870 | 5207 | 2538 | 1786 |
| 532 | 2609 | Information Management Service Inc | | 6055 | 5189 | 2538 | 1445 |
| 533 | 6332 | Providence Medical Group (South Carolina Heart Center) | | 6832 | 5185 | 2538 | 3879 |
| 534 | 3594 | Instituto Nacional de Ciencias Agrícolas | | 1703 | 5181 | 1346 | 3509 |
| 535 | 3312 | Fundação de Medicina Tropical do Amazonas | | 3193 | 5174 | 2538 | 2377 |
| 536 | 6405 | SpineCare Medical Group | | 7564 | 5166 | 2538 | 3879 |
| 537 | 6314 | Cerebral Palsy Research Foundation | | 6907 | 5144 | 2538 | 3879 |
| 538 | 6435 | Canberra Deep Space Communication Complex | | 7766 | 5137 | 2538 | 3879 |
| 539 | 6358 | Hydrologic Research Center | | 7368 | 5134 | 2538 | 3879 |
| 540 | 2734 | Hospital Infantil de México Federico Gómez | | 4527 | 5107 | 2538 | 1701 |
| 541 | 6310 | La Familia Medical Center | | 7068 | 5106 | 2538 | 3879 |
| 542 | 6307 | Maine Center for Cancer Medicine and Blood Disorders | | 7061 | 5101 | 2538 | 3879 |
| 543 | 1728 | VA Greater Los Angeles Healthcare System | | 5520 | 5100 | 2538 | 356 |
| 544 | 6341 | Christiana Spine Center | | 7428 | 5085 | 2538 | 3879 |
| 545 | 6383 | Western Kansas Agricultural Research Centers | | 7655 | 5081 | 2538 | 3879 |
| 546 | 6304 | Olin Neuropsychiatry Research Center | | 7137 | 5079 | 2538 | 3879 |
| 547 | 5276 | Philadelphia Hand to Shoulder Center | | 7212 | 5078 | 2538 | 3509 |
| 548 | 6074 | Mental Illness Research Education and Clinical Centers MIRECC | | 3689 | 5066 | 2538 | 3879 |
| 549 | 6412 | National Science Library NSC / Bibliothèque scientifique nationale CNRC | | 7815 | 5058 | 2538 | 3879 |
| 550 | 6261 | Nebraska Orthopaedic and Sports Medicine | | 6910 | 5049 | 2538 | 3879 |
| 551 | 6206 | Synexus Clinic (Radiant Research) | | 6299 | 5043 | 2538 | 3879 |
| 552 | 6435 | Centro de Estudios e Investigaciones Laborales Programa de Investigación Económica Sobre Tecnología, Trabajo y Empleo | | 7887 | 5019 | 2538 | 3879 |
| 553 | 6508 | Center for Research Strategies | | 7930 | 5013 | 2538 | 3879 |
| 554 | 6095 | Outcomes Research Institute | | 4719 | 5011 | 2538 | 3879 |
| 555 | 6149 | Fondation du CHU de Québec (Fondation des hôpitaux Enfant-Jésus Saint Sacrement) | | 5815 | 5009 | 2538 | 3879 |
| 556 | 2741 | Moss Landing Marine Laboratories | | 1440 | 4994 | 1350 | 3034 |
| 557 | 3627 | Hospital del Salvador |  | 6532 | 4990 | 2538 | 2653 |
| 558 | 6322 | Michigan Biotechnology Institute | | 7598 | 4990 | 2538 | 3879 |
| 559 | 2614 | Instituto de Investigaciones Fisiológicas y Ecológicas | | 6419 | 4989 | 2538 | 1526 |
| 560 | 6067 | Warde Medical Laboratory | | 4704 | 4979 | 2538 | 3879 |
| 561 | 4094 | Western Research Institute | | 7030 | 4975 | 2538 | 3034 |
| 562 | 5497 | Fundación Bariloche | | 6051 | 4973 | 2538 | 3660 |
| 563 | 6175 | Textile Research Institute | | 6568 | 4965 | 2538 | 3879 |
| 564 | 5585 | Twin Cities Spine Center | | 7125 | 4964 | 2538 | 3660 |
| 565 | 2169 | Lankenau Institute for Medical Research | | 7984 | 4962 | 1780 | 1649 |
| 566 | 5522 | Institute of Marine Affairs Trinidad and Tobago |  | 6467 | 4957 | 2538 | 3660 |
| 567 | 6197 | Radiology Associates of Tallahassee | | 7106 | 4931 | 2538 | 3879 |
| 568 | 4908 | Fundación para Combatir la Leucemia y otras Enfermedades Oncohematológicas | | 7414 | 4927 | 2538 | 3410 |
| 569 | 6221 | Romark Institute for Medical Research | | 7300 | 4922 | 2538 | 3879 |
| 570 | 5349 | Radio Observatorio de Jicamarca |  | 4468 | 4918 | 2538 | 3660 |
| 571 | 5699 | Instituto Geográfico Nacional Guatemala |  | 273 | 4916 | 2538 | 3879 |
| 572 | 6162 | Centro de Investigación de la Web | | 6777 | 4914 | 2538 | 3879 |
| 573 | 6227 | University of Washington College of Forest Resources | | 7396 | 4910 | 2538 | 3879 |
| 574 | 6261 | Autonomous Undersea Systems Institute | | 7598 | 4905 | 2538 | 3879 |
| 575 | 5946 | Instituto Nacional de Cancerología | | 3110 | 4898 | 2538 | 3879 |
| 576 | 3044 | Centro Nacional de Sanidad Agropecuaria | | 1882 | 4874 | 1612 | 3191 |
| 577 | 6050 | Plano Orthopedic and Sports Medicine Center | | 5859 | 4843 | 2538 | 3879 |
| 578 | 6067 | Institut du Cancer de Montreal | | 6342 | 4824 | 2538 | 3879 |
| 579 | 3597 | Instituto Nacional de Salud del Niño | | 1165 | 4824 | 2538 | 2919 |
| 580 | 6143 | New Mexico Petroleum Recovery Research Center | | 7174 | 4822 | 2538 | 3879 |
| 581 | 6077 | Silverstein Institute Ear Research Foundation | | 6456 | 4820 | 2538 | 3879 |
| 582 | 4957 | Fundación del Centro de Estudios Infectológicos Dr Daniel Stamboulian | | 5607 | 4807 | 2538 | 3509 |
| 583 | 3779 | Instituto de Botánica del Nordeste | | 5574 | 4800 | 2538 | 2919 |
| 584 | 5191 | Anderson Orthopaedic Research Institute | | 7740 | 4797 | 2538 | 3509 |
| 585 | 3934 | INRS-Eau | | 2584 | 4790 | 468 | 3879 |
| 586 | 6015 | US Army Institute of Surgical Research | | 5789 | 4788 | 2538 | 3879 |
| 587 | 6127 | Christine M Kleinert Institute for Hand and Microsurgery | | 7155 | 4785 | 2538 | 3879 |
| 588 | 6050 | National Institute of Science and Technology for Software Engineering | | 6384 | 4782 | 2538 | 3879 |
| 589 | 6021 | USGS National Wildlife Health Center | | 6156 | 4769 | 2538 | 3879 |
| 590 | 6010 | Arthritis Research Center Foundation Inc | | 6096 | 4753 | 2538 | 3879 |
| 591 | 6209 | Alaska Bird Observatory | | 7796 | 4735 | 2538 | 3879 |
| 592 | 6054 | Hebrew Health Care | | 6806 | 4733 | 2538 | 3879 |
| 593 | 6256 | Reproductive Genetics Institute | | 7864 | 4731 | 2538 | 3879 |
| 594 | 5808 | Hospital Nacional Docente Madre Niño San Bartolomé | | 2439 | 4730 | 2538 | 3879 |
| 595 | 6023 | National Perinatal Information Center | | 6580 | 4721 | 2538 | 3879 |
| 596 | 5973 | Veterinary Neurological Center | | 5955 | 4718 | 2538 | 3879 |
| 597 | 5077 | Boston Biomedical Research Institute | | 7589 | 4707 | 2538 | 3509 |
| 598 | 3014 | Asociación Benéfica Prisma | | 5083 | 4699 | 2538 | 2173 |
| 599 | 2559 | Fundação Estadual de Pesquisa Agropecuária | | 1596 | 4694 | 1851 | 2782 |
| 600 | 5851 | Instituto Superior de Correlacion Geologica | | 3750 | 4692 | 2538 | 3879 |
