| Achieve Clinical Research, LLC /ID# 237098 | Birmingham | Alabama | 35216 | - |
| Barrow Neuro Institute /ID# 236775 | Phoenix | Arizona | 85013 | - |
| Arkansas Clinical Research /ID# 238032 | Little Rock | Arkansas | 72205 | - |
| California Headache and Balance Center /ID# 236247 | Fresno | California | 93720 | - |
| Sun Valley Research Center /ID# 236561 | Imperial | California | 92251-9401 | - |
| Wr-Pri Llc /Id# 236007 | Los Alamitos | California | 90720 | - |
| Pharmacology Research Institute (PRI) - Newport Beach (Wake) /ID# 237691 | Newport Beach | California | 92660 | - |
| Excell Research, Inc /ID# 237721 | Oceanside | California | 92056 | - |
| George J. Rederich M.D. Inc. /ID# 235769 | Torrance | California | 90505 | - |
| Diablo Clinical Research /ID# 237570 | Walnut Creek | California | 94598 | - |
| Colorado Springs Neurological Associates (CSNA) /ID# 236556 | Colorado Springs | Colorado | 80907 | - |
| Advanced Neurosciences Research, LLC /ID# 237426 | Fort Collins | Colorado | 80528 | - |
| CNS Healthcare - Jacksonville /ID# 238245 | Jacksonville | Florida | 32256-6039 | - |
| Health Awareness, Inc - Jupiter /ID# 236226 | Jupiter | Florida | 33458-7021 | - |
| Suncoast Clinical Research /ID# 236934 | New Port Richey | Florida | 34652 | - |
| Sensible Healthcare /ID# 238090 | Ocoee | Florida | 34761 | - |
| Clinical Neuroscience Solutions, Inc /ID# 236608 | Orlando | Florida | 32801-2986 | - |
| Accel Research Sites - St Petersburg Clinical Research Unit /ID# 237163 | St. Petersburg | Florida | 33709-3113 | - |
| ForCare Clinical Research /ID# 237092 | Tampa | Florida | 33613-1244 | - |
| University of South Florida /ID# 234387 | Tampa | Florida | 33606 | - |
| Premiere Research Institute - Palm Beach /ID# 238193 | West Palm Beach | Florida | 33407-3209 | - |
| NeuroTrials Research Inc. /ID# 237365 | Atlanta | Georgia | 30328 | - |
| iResearch Atlanta, LLC /ID# 237390 | Decatur | Georgia | 30030 | - |
| Meridian Clinical Research (Neurology) - Savannah /ID# 234371 | Savannah | Georgia | 31406-2758 | - |
| Clinical Research Atlanta - Headlands LLC /ID# 234438 | Stockbridge | Georgia | 30281-9054 | - |
| Northwest Clinical Trials /ID# 234968 | Boise | Idaho | 83704 | - |
| Deaconess Clinic Downtown /ID# 236959 | Evansville | Indiana | 47713-1227 | - |
| PMG Research of McFarland /ID# 238271 | Ames | Iowa | 50010-5733 | - |
| Collective Medical Research /ID# 236402 | Overland Park | Kansas | 66210 | - |
| Kansas Institute of Research /ID# 236738 | Overland Park | Kansas | 66211-1363 | - |
| Boston Clinical Trials /ID# 236559 | Boston | Massachusetts | 02131-2515 | - |
| Michigan Headache & Neurological Institute (MHNI) /ID# 236565 | Ann Arbor | Michigan | 48104-5131 | - |
| Minneapolis Clinic of Neurology - Golden Valley /ID# 238162 | Golden Valley | Minnesota | 55422-4215 | - |
| Clinical Research Institute, Inc /ID# 238301 | Minneapolis | Minnesota | 55402-2606 | - |
| StudyMetrix Research /ID# 236457 | City of Saint Peters | Missouri | 63303 | - |
| Clinvest Research LLC /ID# 237908 | Springfield | Missouri | 65807 | - |
| Princeton Center for Clinical Research /ID# 235734 | Skillman | New Jersey | 08558 | - |
| Bio Behavioral Health, Inc /ID# 238212 | Toms River | New Jersey | 08755-6434 | - |
| Dent Neurosciences Research Center, Inc. /ID# 237039 | Amherst | New York | 14226 | - |
| Central New York Clinical Research /ID# 235694 | Manlius | New York | 13104 | - |
| Rochester Clinical Research /ID# 236842 | New York | New York | 14609 | - |
| Upstate Clinical Research Associates /ID# 238220 | Williamsville | New York | 14221-6046 | - |
| PMG Research of Charlotte /ID# 237048 | Charlotte | North Carolina | 28209 | - |
| Raleigh Neurology Associates /ID# 237138 | Raleigh | North Carolina | 27607 | - |
| CTI Clinical Research Center /ID# 237278 | Cincinnati | Ohio | 45212 | - |
| University of Cincinnati /ID# 234403 | Cincinnati | Ohio | 45267 | - |
| Aventiv Research Columbus /ID# 236837 | Columbus | Ohio | 43213 | - |
| OK Clinical Research /ID# 236675 | Edmond | Oklahoma | 73034-3257 | - |
| IPS Research Company /ID# 237674 | Oklahoma City | Oklahoma | 73106 | - |
| Summit Headlands LLC /ID# 236077 | Portland | Oregon | 97210 | - |
| Abington Neurological Associates - Abington /ID# 236257 | Abington | Pennsylvania | 19001 | - |
| Lehigh Center for Clinical Research /ID# 236703 | Allentown | Pennsylvania | 18104-5034 | - |
| Suburban Research Associates - Media /ID# 236698 | Media | Pennsylvania | 19063-1760 | - |
| Thomas Jefferson University Jefferson Headache Center /ID# 235821 | Philadelphia | Pennsylvania | 19107 | - |
| Frontier Clinical Research /ID# 237924 | Smithfield | Pennsylvania | 15478 | - |
| Clinical Trials of SC /ID# 237338 | Charleston | South Carolina | 29406 | - |
| WR-ClinSearch /ID# 238287 | Chattanooga | Tennessee | 37421-1605 | - |
| CNS Healthcare - Memphis /ID# 236396 | Memphis | Tennessee | 38119 | - |
| FutureSearch Trials of Neurology /ID# 236428 | Austin | Texas | 78731 | - |
| Tekton Research, Inc. /ID# 237306 | Austin | Texas | 78745 | - |
| DiscoveResearch, Inc /ID# 236273 | Bryan | Texas | 77802 | - |
| FutureSearch Trials of Dallas, LP /ID# 236276 | Dallas | Texas | 75231 | - |
| Centex Studies, Inc. - Houston /ID# 237458 | Houston | Texas | 77058 | - |
| ClinPoint Trials /ID# 236618 | Waxahachie | Texas | 75165-1430 | - |
| Advanced Research Institute /ID# 237749 | Ogden | Utah | 84403 | - |
| University of Utah /ID# 237602 | Salt Lake City | Utah | 84112-5500 | - |
| Charlottesville Medical Research /ID# 237792 | Charlottesville | Virginia | 22911 | - |
| Health Research of Hampton Roads, Inc. (HRHR) /ID# 237253 | Newport News | Virginia | 23606 | - |
| Sentara Neurology Specialists - Virginia Beach /ID# 234350 | Virginia Beach | Virginia | 23456-0019 | - |
| Tidewater Integr Med Research /ID# 236867 | Virginia Beach | Virginia | 23451 | - |
| Northwest Clinical Research Center /ID# 237585 | Bellevue | Washington | 98007 | - |
| Seattle Clinical Research Center /ID# 236912 | Seattle | Washington | 98105 | - |
| Puget Sound Neurology /ID# 236322 | Tacoma | Washington | 25328 | - |