| 501 | 2930 | Kessler Foundation |  | 3920 | 1831 | 1630 | 3879 |
| 502 | 3948 | Colorado Health Foundation | | 4022 | 1834 | 2538 | 3879 |
| 503 | 579 | Los Angeles Biomedical Research Institute | | 4731 | 1853 | 662 | 469 |
| 504 | 3985 | National Center for Voice and Speech | | 4532 | 1854 | 2538 | 3879 |
| 505 | 1277 | Boyce Thompson Institute for Plant Research | | 4011 | 1855 | 2538 | 895 |
| 506 | 4003 | Egg Nutrition Center | | 4860 | 1861 | 2538 | 3879 |
| 507 | 337 | US Naval Research Laboratory | | 1377 | 1870 | 60 | 183 |
| 508 | 4074 | Asphalt Institute | | 5995 | 1879 | 2538 | 3879 |
| 509 | 3896 | Southeast Regional Climate Center | | 2032 | 1884 | 2538 | 3879 |
| 510 | 2805 | Baylor Health Care System | | 3459 | 1889 | 1204 | 3879 |
| 511 | 4108 | Family Research Institute | | 6450 | 1891 | 2538 | 3879 |
| 512 | 4048 | Truman Medical Centers | | 5160 | 1898 | 2538 | 3879 |
| 513 | 1466 | Hebrew Rehabilitation Center for Aged | | 4616 | 1903 | 2538 | 1326 |
| 514 | 2939 | American Sports Medicine Institute | | 7204 | 1905 | 2538 | 3252 |
| 515 | 3909 | Mcleod Health | | 2062 | 1910 | 2538 | 3879 |
| 516 | 4053 | BioDiversity Research Institute | | 5123 | 1912 | 2538 | 3879 |
| 517 | 1480 | Stroud Water Research Center | | 3588 | 1920 | 1664 | 2487 |
| 518 | 3876 | Yale New Haven Health System | | 1136 | 1931 | 2538 | 3879 |
| 519 | 4042 | Pankey Institute | | 4658 | 1933 | 2538 | 3879 |
| 520 | 3995 | Henry M Jackson Foundation for the Advancement of Military Medicine | | 3513 | 1941 | 2538 | 3879 |
| 521 | 2064 | New York State Institute for Basic Research in Developmental Disabilities | | 3144 | 1943 | 2538 | 2487 |
| 522 | 3958 | MEDNAX Phoenix Perinatal Associates | | 2469 | 1948 | 2538 | 3879 |
| 523 | 2925 | Concord Hospital | | 3934 | 1950 | 2538 | 3316 |
| 524 | 3351 | Angiogenesis Foundation | | 6189 | 1980 | 2538 | 3509 |
| 525 | 1656 | Louisiana Universities Marine Consortium | | 4805 | 1982 | 1684 | 2733 |
| 526 | 1560 | Southern Research Institute | | 4216 | 1986 | 1447 | 2696 |
| 527 | 3528 | Mount Auburn Hospital | | 4122 | 1988 | 2538 | 3660 |
| 528 | 878 | University of Arizona Health Sciences | | 1144 | 2008 | 2538 | 250 |
| 529 | 4068 | Vermont Institute Natural Science | | 4187 | 2014 | 2538 | 3879 |
| 530 | 4113 | Tellus Institute | | 5144 | 2017 | 2538 | 3879 |
| 531 | 2800 | Children's Hospital Oakland Research Institute | | 4658 | 2021 | 864 | 3879 |
| 532 | 4019 | Center for the Collaborative Classroom | | 2569 | 2043 | 2538 | 3879 |
| 533 | 2355 | National Center for Supercomputing Applications | | 1034 | 2048 | 2538 | 2919 |
| 534 | 1479 | Sun Microsystems Laboratories | | 4893 | 2049 | 2538 | 1227 |
| 535 | 4243 | Kentucky Science Center Louisville | | 6716 | 2050 | 2538 | 3879 |
| 536 | 1044 | Forsyth Institute | | 5766 | 2061 | 1428 | 1288 |
| 537 | 4099 | Northwest Hospital & Medical Center | | 4022 | 2064 | 2538 | 3879 |
| 538 | 4080 | Wells National Estuarine Research Reserve | | 3410 | 2065 | 2538 | 3879 |
| 539 | 4161 | Powder Coating Institute | | 5175 | 2067 | 2538 | 3879 |
| 540 | 4187 | Eskenazi Health Sidney & Lois Eskenazi Hospital Indianapolis | | 5377 | 2088 | 2538 | 3879 |
| 541 | 2934 | Saint Joseph Mercy Health System | | 2224 | 2092 | 2254 | 3660 |
| 542 | 4082 | University Health Care System Augusta | | 2861 | 2106 | 2538 | 3879 |
| 543 | 4262 | Aspen Center for Physics | | 6529 | 2115 | 2538 | 3879 |
| 544 | 4254 | Space Studies Institute | | 6295 | 2120 | 2538 | 3879 |
| 545 | 1375 | Pacific Institute for Research and Evaluation | | 4431 | 2147 | 1798 | 2002 |
| 546 | 4196 | Kantar Health (Consumer Health Sciences) | | 4514 | 2154 | 2538 | 3879 |
| 547 | 1193 | Lunar and Planetary Institute | | 262 | 2158 | 2086 | 1556 |
| 548 | 4235 | Group Health Center for Health Studies | | 5423 | 2160 | 2538 | 3879 |
| 549 | 3985 | Southern Research Station USDA Forest Service | | 629 | 2167 | 2538 | 3879 |
| 550 | 3589 | Southwest Oncology Group | | 2734 | 2175 | 2538 | 3660 |
| 551 | 688 | National Institute of Health Clinical Center | | 5144 | 2193 | 1411 | 368 |
| 552 | 4384 | VA Polytrauma System of Care | | 7193 | 2205 | 2538 | 3879 |
| 553 | 1550 | Medical City Hospital | | 1508 | 2209 | 2538 | 1490 |
| 554 | 853 | International Computer Science Institute | | 797 | 2210 | 574 | 1200 |
| 555 | 1552 | Butler Hospital | | 3838 | 2216 | 2538 | 1380 |
| 556 | 3158 | New York Eye Cancer Center | | 5879 | 2229 | 2538 | 3316 |
| 557 | 4301 | Bay Medical | | 5965 | 2231 | 2538 | 3879 |
| 558 | 2068 | FX Palo Alto Laboratory | | 3887 | 2250 | 1045 | 3316 |
| 559 | 4171 | Berkshire Health Systems | | 2799 | 2254 | 2538 | 3879 |
| 560 | 4281 | Saint John's Hospital Springfield | | 5257 | 2256 | 2538 | 3879 |
| 561 | 3087 | Good Samaritan Hospital los Angeles | | 6412 | 2266 | 2538 | 3252 |
| 562 | 3899 | Institute for Molecular Manufacturing | | 7498 | 2286 | 2538 | 3660 |
| 563 | 4275 | National Research Corporation | | 4805 | 2291 | 2538 | 3879 |
| 564 | 4142 | Oregon College of Oriental Medicine | | 4017 | 2300 | 2521 | 3879 |
| 565 | 717 | La Jolla Institute for Allergy & Immunology | | 4947 | 2306 | 330 | 665 |
| 566 | 4332 | International Anesthesia Research Society | | 5651 | 2309 | 2538 | 3879 |
| 567 | 1398 | University of Arizona Cancer Center | | 5144 | 2320 | 2538 | 911 |
| 568 | 4275 | Norwalk Hospital | | 4350 | 2325 | 2538 | 3879 |
| 569 | 2921 | Archbold Biological Station | | 2452 | 2345 | 2093 | 3660 |
| 570 | 4341 | Jewish Home and Hospital | | 5206 | 2350 | 2538 | 3879 |
| 571 | 4269 | National Center for Education in Maternal and Child Health | | 3870 | 2358 | 2538 | 3879 |
| 572 | 4231 | Kelsey-Seybold Clinic | | 2876 | 2364 | 2538 | 3879 |
| 573 | 4433 | Steadman Clinic | | 6560 | 2376 | 2538 | 3879 |
| 574 | 3171 | Mason Research Institute | | 4122 | 2382 | 1484 | 3879 |
| 575 | 4297 | Clinical Trial and Statistical Applications Innovations | | 4122 | 2383 | 2538 | 3879 |
| 576 | 4185 | Rhode Island Department of Environmental Management | | 1418 | 2397 | 2538 | 3879 |
| 577 | 4022 | Bronx Lebanon Hospital Center | | 4837 | 2412 | 2489 | 3879 |
| 578 | 4430 | Center for Integration of Medicine and Innovative Technology | | 6065 | 2418 | 2538 | 3879 |
| 579 | 1120 | National Institute on Deafness and other Communication Disorders | | 3563 | 2426 | 1590 | 1300 |
| 580 | 4088 | United States Naval Observatory | | 403 | 2432 | 2538 | 3879 |
| 581 | 4319 | Osiris Therapeutics | | 3743 | 2436 | 2538 | 3879 |
| 582 | 4351 | Oregon Clinic | | 4304 | 2446 | 2538 | 3879 |
| 583 | 4395 | Decision Sciences Institute | | 4969 | 2452 | 2538 | 3879 |
| 584 | 4305 | Tall Timbers Research Station | | 3213 | 2454 | 2538 | 3879 |
| 585 | 1266 | NASA Goddard Institute for Space Studies | | 1301 | 2459 | 2538 | 667 |
| 586 | 4400 | Health Research and Educational Trust | | 4823 | 2468 | 2538 | 3879 |
| 587 | 4404 | Central Institute for the Deaf St Louis | | 4893 | 2469 | 2538 | 3879 |
| 588 | 2421 | Kessler Rehabilitation Corporation | | 6351 | 2473 | 2538 | 2584 |
| 589 | 4351 | JFK Medical Center (New Jersey Neuroscience Institute) | | 3861 | 2474 | 2538 | 3879 |
| 590 | 4525 | Queen's Medical Center Honolulu Hawaii | | 6809 | 2486 | 2538 | 3879 |
| 591 | 4332 | Floating Hospital for Children | | 3285 | 2487 | 2538 | 3879 |
| 592 | 4450 | International Heart Institute Montana Foundation | | 5535 | 2494 | 2538 | 3879 |
| 593 | 2540 | Institute of Human Virology | | 6674 | 2510 | 2538 | 2696 |
| 594 | 2579 | National Institute of General Medical Sciences | | 1703 | 2523 | 2538 | 2919 |
| 595 | 4365 | Arizona Oncology Associates | | 3302 | 2530 | 2538 | 3879 |
| 596 | 4389 | National Institute of Statistical Sciences | | 3730 | 2538 | 2538 | 3879 |
| 597 | 4534 | Marcus Institute | | 6475 | 2547 | 2538 | 3879 |
| 598 | 3226 | Earth and Space Research | | 6748 | 2550 | 2538 | 3252 |
| 599 | 3782 | Southcentral Foundation | | 2553 | 2552 | 2538 | 3660 |
| 600 | 4434 | Austen Riggs Center | | 4409 | 2563 | 2538 | 3879 |
