| 801 | 6197 | Radiology Associates of Tallahassee |  | 7106 | 4931 | 2538 | 3879 |
| 802 | 435 | Rady Childrens Hospital and Health Center San Diego | | 1377 | 920 | 1188 | 507 |
| 803 | 4516 | Raleigh Orthopaedic Clinic | | 5959 | 4127 | 2538 | 3509 |
| 804 | 2301 | Ralph H. Johnson VA Medical Center | | 5175 | 5799 | 2538 | 722 |
| 805 | 51 | Rand Corporation | | 276 | 30 | 109 | 353 |
| 806 | 5650 | Rapid City Medical Center | | 5831 | 4231 | 2538 | 3879 |
| 807 | 418 | Regeneron Pharmaceuticals Inc | | 2640 | 739 | 355 | 850 |
| 808 | 835 | Regenstrief Institute | | 4634 | 1621 | 1270 | 1074 |
| 809 | 762 | Rehabilitation Institute of Chicago | | 5794 | 1138 | 1895 | 909 |
| 810 | 6202 | Rehabilitation Research and Development Service | | 1458 | 5430 | 2538 | 3879 |
| 811 | 3300 | Renal Research Institute | | 6688 | 4593 | 2538 | 2487 |
| 812 | 6256 | Reproductive Genetics Institute | | 7864 | 4731 | 2538 | 3879 |
| 813 | 8072 | Research and Development Iowa City VA Medical Center | | 7455 | 8071 | 2538 | 3879 |
| 814 | 2770 | Research Institute for Fragrance Materials | | 5948 | 3452 | 2489 | 2782 |
| 815 | 747 | Research Triangle Institute | | 721 | 268 | 171 | 3076 |
| 816 | 2696 | Retina Foundation of the Southwest | | 6735 | 4215 | 2538 | 2027 |
| 817 | 6672 | Retina Research Foundation | | 7159 | 5694 | 2538 | 3879 |
| 818 | 4185 | Rhode Island Department of Environmental Management | | 1418 | 2397 | 2538 | 3879 |
| 819 | 7863 | Rhode Island Spine Center Clinical Reasoning in Spine Pain | | 7899 | 7578 | 2538 | 3879 |
| 820 | 2627 | Richard L. Roudebush VA Medical Center Indianapolis Indiana | | 6401 | 6172 | 2538 | 829 |
| 821 | 5031 | RIT National Technical Institute for the Deaf | | 2379 | 3612 | 2538 | 3879 |
| 822 | 1093 | Riverside Methodist Hospital Ohiohealth | | 2082 | 730 | 2478 | 1920 |
| 823 | 4359 | Riverside Research Institute | | 6103 | 4142 | 1903 | 3879 |
| 824 | 4920 | Riverview Medical Center | | 5399 | 3232 | 2538 | 3879 |
| 825 | 4555 | Robert Graham Center | | 4304 | 2767 | 2538 | 3879 |
| 826 | 7503 | Robert J. Dole VA Medical Center Wichita Kansas | | 7041 | 7082 | 2538 | 3879 |
| 827 | 911 | Robert Wood Johnson Foundation | | 1484 | 129 | 2538 | 2460 |
| 828 | 2132 | Robert Wood Johnson Medical School | | 1615 | 1287 | 271 | 3879 |
| 829 | 2202 | Rockefeller Foundation | | 3248 | 210 | 2538 | 3879 |
| 830 | 3545 | Rockefeller University Hospital | | 5960 | 2797 | 2538 | 3410 |
| 831 | 2251 | Rocky Mountain Biological Laboratory | | 5459 | 2716 | 2538 | 2249 |
| 832 | 2194 | Rocky Mountain Institute | | 2553 | 215 | 2538 | 3879 |
| 833 | 5144 | Rocky Mountain Poison and Drug Center | | 6836 | 3384 | 2538 | 3879 |
| 834 | 3857 | Roger Williams Medical Center | | 5115 | 3046 | 2538 | 3509 |
| 835 | 2971 | Rogosin Institute | | 6501 | 4064 | 2538 | 2408 |
| 836 | 6221 | Romark Institute for Medical Research | | 7300 | 4922 | 2538 | 3879 |
| 837 | 7751 | Roskamp Institute | | 7954 | 7344 | 2538 | 3879 |
| 838 | 194 | Roswell Park Cancer Institute | | 1116 | 569 | 132 | 234 |
| 839 | 1585 | Rothman Orthopaedic Institute | | 3213 | 3461 | 2538 | 808 |
| 840 | 3782 | Rowland Institute at Harvard | | 4338 | 6247 | 1457 | 3191 |
| 841 | 97 | Rush University Medical Center | | 827 | 221 | 66 | 138 |
| 842 | 1088 | RWJBarnabas Health | | 1129 | 636 | 2004 | 2627 |
| 843 | 4281 | Saint John's Hospital Springfield | | 5257 | 2256 | 2538 | 3879 |
| 844 | 2934 | Saint Joseph Mercy Health System | | 2224 | 2092 | 2254 | 3660 |
| 845 | 3905 | Saint Joseph's Hospital Health Center | | 3899 | 1771 | 2538 | 3879 |
| 846 | 47 | Saint Jude Children's Research Hospital | | 334 | 92 | 45 | 141 |
| 847 | 2963 | Saint Louis Children's Hospital | | 2090 | 757 | 2538 | 3879 |
| 848 | 3277 | Saint Luke's Hospitals and Health Care in Idaho | | 1484 | 1095 | 2538 | 3879 |
| 849 | 4434 | Saint Vincent Hospital | | 6218 | 3125 | 2469 | 3879 |
| 850 | 5081 | Saint Vincent's Catholic Medical Centers | | 7930 | 2891 | 2538 | 3879 |
| 851 | 111 | Salk Institute for Biological Studies | | 420 | 194 | 40 | 351 |
| 852 | 643 | Samuel Roberts Noble Foundation | | 1863 | 848 | 591 | 1581 |
| 853 | 2808 | Samueli Institute | | 5708 | 3271 | 2538 | 2653 |
| 854 | 1227 | San Diego Supercomputer Center | | 338 | 148 | 601 | 3879 |
| 855 | 1557 | San Francisco Estuary Institute | | 2030 | 1786 | 1921 | 2653 |
| 856 | 1871 | San Francisco VA Medical Center | | 5123 | 5913 | 2538 | 259 |
| 857 | 50 | Sandia National Laboratories | | 195 | 97 | 65 | 147 |
| 858 | 2139 | Sanford Burnham Prebys Medical Discovery Institute (Sanford-Burnham Medical Research Institute) | | 2598 | 1266 | 256 | 3879 |
| 859 | 4442 | Sansum Clinic | | 3685 | 2630 | 2538 | 3879 |
| 860 | 1478 | Savannah River National Laboratory | | 6431 | 2706 | 1183 | 2104 |
| 861 | 3520 | Savannah River Site | | 2008 | 1371 | 2538 | 3879 |
| 862 | 3894 | SBH Health System | | 2900 | 2963 | 2316 | 3879 |
| 863 | 152 | Schlumberger Doll Research Center | | 415 | 133 | 233 | 667 |
| 864 | 633 | Scripps Health (Whittier Institute for Diabetes) | | 1458 | 485 | 2538 | 625 |
| 865 | 2177 | Scripps Institution of Oceanography | | 856 | 243 | 2538 | 3879 |
| 866 | 42 | Scripps Research Institute | | 344 | 112 | 26 | 98 |
| 867 | 7422 | Seattle Allergy & Asthma Research Institute | | 7864 | 6786 | 2538 | 3879 |
| 868 | 8001 | Seattle Epidemiologic Research and Information Center | | 7634 | 7953 | 2538 | 3879 |
| 869 | 7320 | Seattle Prostate Institute at Swedish Medical Center | | 7380 | 6735 | 2538 | 3879 |
| 870 | 5955 | Semmes-Murphy Neurologic and Spine Institute | | 6676 | 4611 | 2538 | 3879 |
| 871 | 244 | SETI Institute | | 1615 | 161 | 946 | 861 |
| 872 | 1173 | Sharp Memorial Hospital Rehabilitation Center | | 1316 | 547 | 2501 | 2266 |
| 873 | 6497 | Shea Ear Clinic | | 6661 | 5445 | 2538 | 3879 |
| 874 | 7634 | Sheridan VA Medical Center | | 7374 | 7301 | 2538 | 3879 |
| 875 | 6077 | Silverstein Institute Ear Research Foundation | | 6456 | 4820 | 2538 | 3879 |
| 876 | 6660 | Sioux Falls VA Medical Center | | 6479 | 6910 | 2538 | 3509 |
| 877 | 25 | Sloan Kettering Memorial Cancer Center | | 368 | 107 | 6 | 26 |
| 878 | 1940 | Smith Kettlewell Eye Research Institute | | 4328 | 1791 | 1930 | 3140 |
| 879 | 1323 | Smithsonian Environmental Research Center | | 3920 | 1538 | 2538 | 1210 |
| 880 | 12 | Smithsonian Institution | | 14 | 11 | 31 | 71 |
| 881 | 438 | Smithsonian Institution National Museum of Natural History | | 2454 | 258 | 2538 | 383 |
| 882 | 3704 | Smithsonian Science Education Center (National Science Resources Center) | | 4752 | 1463 | 2538 | 3879 |
| 883 | 632 | Smithsonian Tropical Research Institute | | 245 | 674 | 2538 | 519 |
| 884 | 2115 | Social Science Research Council | | 567 | 216 | 2538 | 3879 |
| 885 | 4478 | Sonoran Institute | | 5243 | 2572 | 2538 | 3879 |
| 886 | 4945 | Sonoran Spine Center | | 5442 | 4259 | 2538 | 3660 |
| 887 | 6884 | South Bend Medical Foundation | | 6893 | 6807 | 2538 | 3660 |
| 888 | 2859 | South Texas Veterans Health Care System | | 5447 | 6963 | 2538 | 649 |
| 889 | 3782 | Southcentral Foundation | | 2553 | 2552 | 2538 | 3660 |
| 890 | 4721 | Southeast Louisiana Veterans Health Care System | | 5872 | 6645 | 2538 | 2653 |
| 891 | 3896 | Southeast Regional Climate Center | | 2032 | 1884 | 2538 | 3879 |
| 892 | 7962 | Southeastern Orthopedics Sports Medicine and Shoulder Center | | 8091 | 7707 | 2538 | 3879 |
| 893 | 4323 | Southern Arizona VA Health Care System | | 6538 | 6363 | 2538 | 2487 |
| 894 | 3284 | Southern California Coastal Water Research Project | | 2418 | 2988 | 1131 | 3879 |
| 895 | 3947 | Southern California Orthopedic Institute | | 4328 | 1808 | 2538 | 3879 |
| 896 | 6859 | Southern Colorado Clinic | | 7518 | 5920 | 2538 | 3879 |
| 897 | 1560 | Southern Research Institute | | 4216 | 1986 | 1447 | 2696 |
| 898 | 3985 | Southern Research Station USDA Forest Service | | 629 | 2167 | 2538 | 3879 |
| 899 | 5806 | Southern University Agricultural Research Center | | 6820 | 4387 | 2538 | 3879 |
| 900 | 3589 | Southwest Oncology Group | | 2734 | 2175 | 2538 | 3660 |
