| 501 | 3701 | National Center for Manufacturing Sciences |  | 3698 | 1505 | 2538 | 3879 |
| 502 | 2718 | International Fertilizer Development Center | | 3708 | 1784 | 2138 | 3660 |
| 503 | 4389 | National Institute of Statistical Sciences | | 3730 | 2538 | 2538 | 3879 |
| 504 | 2134 | Gatorade Sports Science Institute | | 3730 | 1167 | 2538 | 3076 |
| 505 | 3799 | International Society for Heart & Lung Transplantation | | 3736 | 1641 | 2538 | 3879 |
| 506 | 4319 | Osiris Therapeutics | | 3743 | 2436 | 2538 | 3879 |
| 507 | 2510 | Institute for Defense Analyses | | 3743 | 1256 | 1524 | 3879 |
| 508 | 1247 | Children's Hospital & Research Center at Oakland | | 3750 | 928 | 2538 | 1605 |
| 509 | 4983 | Breault Research Organization | | 3796 | 3429 | 2538 | 3879 |
| 510 | 2526 | Nuclear Energy Institute | | 3812 | 371 | 2538 | 3879 |
| 511 | 1552 | Butler Hospital | | 3838 | 2216 | 2538 | 1380 |
| 512 | 2504 | Edison Welding Institute | | 3838 | 1796 | 2164 | 3509 |
| 513 | 749 | HRL Laboratories | | 3842 | 1182 | 450 | 1518 |
| 514 | 4351 | JFK Medical Center (New Jersey Neuroscience Institute) | | 3861 | 2474 | 2538 | 3879 |
| 515 | 4269 | National Center for Education in Maternal and Child Health | | 3870 | 2358 | 2538 | 3879 |
| 516 | 2068 | FX Palo Alto Laboratory | | 3887 | 2250 | 1045 | 3316 |
| 517 | 3341 | Altarum Institute | | 3887 | 1081 | 2538 | 3879 |
| 518 | 3905 | Saint Joseph's Hospital Health Center | | 3899 | 1771 | 2538 | 3879 |
| 519 | 1323 | Smithsonian Environmental Research Center | | 3920 | 1538 | 2538 | 1210 |
| 520 | 2930 | Kessler Foundation | | 3920 | 1831 | 1630 | 3879 |
| 521 | 531 | Woods Hole Research Center | | 3930 | 818 | 852 | 1001 |
| 522 | 2925 | Concord Hospital | | 3934 | 1950 | 2538 | 3316 |
| 523 | 3838 | National Minority AIDS Council | | 3934 | 1697 | 2538 | 3879 |
| 524 | 2291 | American College of Rheumatology | | 3942 | 252 | 2538 | 3879 |
| 525 | 4915 | National Institute of Health Center for Scientific Review | | 3971 | 5590 | 2538 | 3316 |
| 526 | 1277 | Boyce Thompson Institute for Plant Research | | 4011 | 1855 | 2538 | 895 |
| 527 | 4142 | Oregon College of Oriental Medicine | | 4017 | 2300 | 2521 | 3879 |
| 528 | 4099 | Northwest Hospital & Medical Center | | 4022 | 2064 | 2538 | 3879 |
| 529 | 3948 | Colorado Health Foundation | | 4022 | 1834 | 2538 | 3879 |
| 530 | 1593 | National Evolutionary Synthesis Center | | 4029 | 1578 | 2538 | 1906 |
| 531 | 708 | Space Science Institute | | 4041 | 1317 | 1604 | 801 |
| 532 | 4468 | Conservation Biology Institute | | 4049 | 2653 | 2538 | 3879 |
| 533 | 6375 | Learning Research & Development Center | | 4049 | 5466 | 2538 | 3879 |
| 534 | 2906 | Atmospheric Environmental Research Inc | | 4067 | 1565 | 1938 | 3879 |
| 535 | 3631 | Feinstein Institute for Medical Research | | 4082 | 1402 | 2538 | 3879 |
| 536 | 1638 | Boys Town National Research Hospital | | 4088 | 1762 | 2538 | 1832 |
| 537 | 1839 | Diabetes Research Institute | | 4091 | 1044 | 2538 | 2782 |
| 538 | 922 | Oak Ridge Institute for Science and Education | | 4113 | 899 | 2538 | 834 |
| 539 | 4297 | Clinical Trial and Statistical Applications Innovations | | 4122 | 2383 | 2538 | 3879 |
| 540 | 3528 | Mount Auburn Hospital | | 4122 | 1988 | 2538 | 3660 |
| 541 | 3171 | Mason Research Institute | | 4122 | 2382 | 1484 | 3879 |
| 542 | 1491 | Palo Alto Medical Foundation | | 4135 | 446 | 2538 | 2867 |
| 543 | 5294 | Frederick Cancer Research Development Center | | 4140 | 3825 | 2538 | 3879 |
| 544 | 5171 | Materials Research Science & Engineering Centers | | 4140 | 3658 | 2538 | 3879 |
| 545 | 3032 | Alliance for Aging Research | | 4154 | 1191 | 2538 | 3660 |
| 546 | 4316 | Institute for Applied Ecology | | 4154 | 3331 | 2538 | 3660 |
| 547 | 1780 | Newton Wellesley Hospital | | 4154 | 1668 | 2538 | 2141 |
| 548 | 5465 | Venice Hospital | | 4154 | 4137 | 2538 | 3879 |
| 549 | 1989 | New England Complex Systems Institute | | 4172 | 737 | 2355 | 3509 |
| 550 | 3232 | Center for the Advancement of Health | | 4187 | 927 | 2538 | 3879 |
| 551 | 4068 | Vermont Institute Natural Science | | 4187 | 2014 | 2538 | 3879 |
| 552 | 3300 | Association of Universities for Research in Astronomy | | 4205 | 1001 | 2538 | 3879 |
| 553 | 1560 | Southern Research Institute | | 4216 | 1986 | 1447 | 2696 |
| 554 | 3742 | Hughston Clinic | | 4235 | 1533 | 2538 | 3879 |
| 555 | 2003 | Bloodworks Northwest (Puget Sound Blood Center) | | 4243 | 1513 | 2538 | 2627 |
| 556 | 4171 | William Alanson White Institute | | 4265 | 3084 | 2538 | 3660 |
| 557 | 4652 | Core Institute | | 4287 | 2920 | 2538 | 3879 |
| 558 | 4555 | Robert Graham Center | | 4304 | 2767 | 2538 | 3879 |
| 559 | 4351 | Oregon Clinic | | 4304 | 2446 | 2538 | 3879 |
| 560 | 3947 | Southern California Orthopedic Institute | | 4328 | 1808 | 2538 | 3879 |
| 561 | 1940 | Smith Kettlewell Eye Research Institute | | 4328 | 1791 | 1930 | 3140 |
| 562 | 3782 | Rowland Institute at Harvard | | 4338 | 6247 | 1457 | 3191 |
| 563 | 4275 | Norwalk Hospital | | 4350 | 2325 | 2538 | 3879 |
| 564 | 3891 | Fannie and John Hertz Foundation | | 4386 | 1727 | 2538 | 3879 |
| 565 | 4945 | Lawrenceville Plasma Physics Fusion | | 4402 | 3337 | 2538 | 3879 |
| 566 | 6459 | US Army Medical Department Center & School | | 4402 | 5580 | 2538 | 3879 |
| 567 | 4434 | Austen Riggs Center | | 4409 | 2563 | 2538 | 3879 |
| 568 | 3924 | Hennepin County Medical Center | | 4409 | 1768 | 2538 | 3879 |
| 569 | 4895 | Winthrop P. Rockefeller Cancer Institute University of Arkansas Medical Sciences | | 4416 | 3281 | 2538 | 3879 |
| 570 | 2979 | Audubon Nature Institute | | 4426 | 698 | 2538 | 3879 |
| 571 | 1375 | Pacific Institute for Research and Evaluation | | 4431 | 2147 | 1798 | 2002 |
| 572 | 1995 | Cooper Institute | | 4431 | 1065 | 2538 | 2981 |
| 573 | 4636 | Helen Hayes Hospital | | 4442 | 2881 | 2538 | 3879 |
| 574 | 4670 | Pinchot Institute for Conservation | | 4459 | 2946 | 2538 | 3879 |
| 575 | 3981 | Mallinckrodt Institute of Radiology | | 4468 | 4515 | 778 | 3879 |
| 576 | 5144 | Charlotte Hungerford Hospital Torrington | | 4493 | 3602 | 2538 | 3879 |
| 577 | 4196 | Kantar Health (Consumer Health Sciences) | | 4514 | 2154 | 2538 | 3879 |
| 578 | 4996 | National Center on Minority Health and Health Disparities | | 4514 | 3393 | 2538 | 3879 |
| 579 | 3985 | National Center for Voice and Speech | | 4532 | 1854 | 2538 | 3879 |
| 580 | 5059 | Kuakini Health System | | 4565 | 3479 | 2538 | 3879 |
| 581 | 5077 | ILSI Health and Environmental Sciences Institute | | 4586 | 3505 | 2538 | 3879 |
| 582 | 746 | Oregon Research Institute | | 4596 | 1337 | 346 | 1380 |
| 583 | 1612 | Minneapolis Heart Institute Foundation | | 4605 | 2944 | 2538 | 1061 |
| 584 | 946 | Texas Biomedical Research Institute (Southwest Foundation for Biomedical Research) | | 4605 | 1825 | 1477 | 1188 |
| 585 | 1466 | Hebrew Rehabilitation Center for Aged | | 4616 | 1903 | 2538 | 1326 |
| 586 | 4667 | Washington Institute of Dermatologic Laser Surgery | | 4616 | 2927 | 2538 | 3879 |
| 587 | 1805 | Jaeb Center for Health Research | | 4622 | 3210 | 2538 | 1267 |
| 588 | 1025 | New York Eye and Ear Infirmary | | 4622 | 1293 | 2319 | 1288 |
| 589 | 835 | Regenstrief Institute | | 4634 | 1621 | 1270 | 1074 |
| 590 | 3722 | Food and Drug Law Institute | | 4634 | 1489 | 2538 | 3879 |
| 591 | 1431 | W M Keck Observatory | | 4651 | 630 | 2538 | 2460 |
| 592 | 789 | Monell Chemical Senses Center | | 4651 | 934 | 1208 | 1572 |
| 593 | 589 | Wistar Institute | | 4651 | 1380 | 660 | 763 |
| 594 | 4042 | Pankey Institute | | 4658 | 1933 | 2538 | 3879 |
| 595 | 2800 | Children's Hospital Oakland Research Institute | | 4658 | 2021 | 864 | 3879 |
| 596 | 4675 | Houston Advanced Research Center | | 4658 | 2933 | 2538 | 3879 |
| 597 | 3431 | Pacific Whale Foundation | | 4671 | 1152 | 2538 | 3879 |
| 598 | 6067 | Warde Medical Laboratory | | 4704 | 4979 | 2538 | 3879 |
| 599 | 6095 | Outcomes Research Institute | | 4719 | 5011 | 2538 | 3879 |
| 600 | 579 | Los Angeles Biomedical Research Institute | | 4731 | 1853 | 662 | 469 |
