| Synexus Clinical Research US, Inc. | Chandler | Arizona | 85224 | - |
| Advanced Research Associates | Glendale | Arizona | 85308 | - |
| Alea Research Institute | Phoenix | Arizona | 85012 | - |
| Barrow Neurological Institute | Phoenix | Arizona | 85013 | - |
| Orange Grove Family Practice | Tucson | Arizona | 85741 | - |
| Principals Research Group | Hot Springs | Arkansas | 71901 | - |
| Arkansas Clinical Research | Little Rock | Arkansas | 72205 | - |
| Baptist Health Center for Clinical Research | Little Rock | Arkansas | 72205 | - |
| Med Center Medical Clinic | Carmichael | California | 95608 | - |
| Triwest Research Associates | El Cajon | California | 92020 | - |
| California Headache and Balance Center | Fresno | California | 93720 | - |
| Neuro Pain Medical Center | Fresno | California | 93710 | - |
| Fullerton Neurology and Headache Center | Fullerton | California | 92835 | - |
| Neurology Center of North Orange County | Fullerton | California | 92835 | - |
| NervePro Research Bruce Cleeremans | Irvine | California | 92618 | - |
| Grossmont Center for Clinical Research | La Mesa | California | 91942 | - |
| Torrance Clinical Research Institute, Inc. | Lomita | California | 90731 | - |
| Long Beach Clinical Trials Services | Long Beach | California | 90806 | - |
| Keck Medicine of USC | Los Angeles | California | 90033 | - |
| Newport Beach Clinical Research Associates | Newport Beach | California | 92663 | - |
| Pharmacology Research Institute | Newport Beach | California | 92660 | - |
| Excell Research, Inc. | Oceanside | California | 92056 | - |
| Stanford | Palo Alto | California | 94304 | - |
| Rancho Cucamonga Clinical Research | Rancho Cucamonga | California | 91730 | - |
| Desert Valley Research | Redlands | California | 92374 | - |
| George J. Rederich, M.D. Inc. | Redondo Beach | California | 90277 | - |
| Paradigm Clinical Research Centers, Inc | San Diego | California | 92117 | - |
| Optimus Medical Group | San Francisco | California | 94102 | - |
| California Neuroscience Research | Sherman Oaks | California | 91403 | - |
| Synexus Clinical Research US, Inc. | Vista | California | 92083 | - |
| Colorado Springs Neurological Associates | Colorado Springs | Colorado | 80907 | - |
| Delta Waves, Inc. | Colorado Springs | Colorado | 80918 | - |
| Colorado Neurological Institute | Englewood | Colorado | 80113 | - |
| New England Institute for Clinical Research | Stamford | Connecticut | 06905 | - |
| Aventura Neurological Associates | Aventura | Florida | 33180 | - |
| Neurology Offices of South Florida | Boca Raton | Florida | 33428 | - |
| Sarkis Clinical Trials- Gainesville | Gainesville | Florida | 32607 | - |
| Clinical Neuroscience Solutions, Inc. | Jacksonville | Florida | 32256 | - |
| Westside Center for Clinical Research | Jacksonville | Florida | 32205 | - |
| Neurology Associates, P.A. | Maitland | Florida | 32751 | - |
| Well Pharma Medical Research, Corp. | Miami | Florida | 33143 | - |
| Clinical Neuroscience Solutions | Orlando | Florida | 32801 | - |
| Neurology Associates of Ormond Beach | Ormond Beach | Florida | 32174 | - |
| Sarasota Memorial Hospital Clinical Research Center | Sarasota | Florida | 34239 | - |
| Meridien Research | St. Petersburg | Florida | 33709 | - |
| Axiom Clinical Research of Florida | Tampa | Florida | 33609 | - |
| University of South Florida | Tampa | Florida | 33612 | - |
| Neurotrials Research | Atlanta | Georgia | 30328 | - |
| Pediatric and Adolescent NeuroDevelopmental Associates (PANDA) Neurology | Atlanta | Georgia | 30328 | - |
| Synexus Clinical Research US, Inc. | Atlanta | Georgia | 30328 | - |
| Meridian Clinical Research, LLC | Savannah | Georgia | 31406 | - |
| Diamond Headache Clinic Ltd | Chicago | Illinois | 60642 | - |
| Clinical Investigation Specialists | Gurnee | Illinois | 60031 | - |
| JWM Neurology | Indianapolis | Indiana | 46256 | - |
| Deaconess Clinic - Gateway Health Center | Newburgh | Indiana | 47630 | - |
| PMG Research, Inc. d/b/a PMG Research of McFarland Clinic | Ames | Iowa | 50010 | - |
| Heartland Research Associates, LLC | Newton | Kansas | 67114 | - |
| College Park Family Care Center | Overland Park | Kansas | 66212 | - |
| Phoenix Medical Research | Prairie Village | Kansas | 66208 | - |
| Heartland Research Associates, LLC - An AMR Company | Wichita | Kansas | 67205 | - |
| Heartland Research Associates, LLC - An AMR Company | Wichita | Kansas | 67207 | - |
| Ochsner Clinic Foundation | Covington | Louisiana | 70433 | - |
| DelRicht Research | New Orleans | Louisiana | 70124 | - |
| New Orleans Center for Clinical Research | New Orleans | Louisiana | 70119 | - |
| Pharmasite Research, Inc. | Baltimore | Maryland | 21208 | - |
| Mid-Atlantic Permanente Medical Group, PC | Largo | Maryland | 20774 | - |
| John R. Graham Headache Center Brigham and Women's Faulkner Hospital | Boston | Massachusetts | 02130 | - |
| BTC of New Bedford | New Bedford | Massachusetts | 02740 | - |
| Minneapolis Clinic of Neurology | Golden Valley | Minnesota | 55422 | - |
| Clinical Research Institute | Minneapolis | Minnesota | 55402 | - |
| Synexus Usa | Bay Saint Louis | Mississippi | 63141 | - |
| The Headache Center | Ridgeland | Mississippi | 39157 | - |
| StudyMetrix Research | City of Saint Peters | Missouri | 63303 | - |
| Clinvest Research LLC. | Springfield | Missouri | 65810 | - |
| Synexus Clinical Research US, Inc. | Omaha | Nebraska | 68144 | - |
| Nevada Headache Institute | Las Vegas | Nevada | 89113 | - |
| Bio Behavioral Health | Toms River | New Jersey | 08755 | - |
| Albuquerque Clinical Trials | Albuquerque | New Mexico | 87102 | - |
| Dent Neurologic Institute | Amherst | New York | 14226 | - |
| Northwell Health | Great Neck | New York | 11021 | - |
| Montefiore Medical Center | The Bronx | New York | 10461 | - |
| PMG Research of Charlotte, LLC | Charlotte | North Carolina | 28209 | - |
| Guilford Neurologic Associates, Inc | Greensboro | North Carolina | 27405 | - |
| PMG Research of Raleigh, LLC | Raleigh | North Carolina | 27609 | - |
| Raleigh Neurology Associates, P.A. | Raleigh | North Carolina | 27607 | - |
| PMG Research of Rocky Mount, LLC | Rocky Mount | North Carolina | 27804 | - |
| Wilmington Health, PLLC | Wilmington | North Carolina | 28401 | - |
| Piedmont Medical Research of Winston-Salem | Winston-Salem | North Carolina | 27103 | - |
| Synexus Clinical Research US, Inc. | Akron | Ohio | 44311 | - |
| CTI Clinical Research Center | Cincinnati | Ohio | 45212 | - |
| Patient Priority Clinical Sites | Cincinnati | Ohio | 45215 | - |
| Sentral Clinical Research Services | Cincinnati | Ohio | 45242 | - |
| University of Cincinnati | Cincinnati | Ohio | 45219 | - |
| Aventiv Research Inc | Columbus | Ohio | 43213 | - |
| Family Physicians Associates | Lyndhurst | Ohio | 44124 | - |
| OK Clinical Research, LLC | Edmond | Oklahoma | 73034 | - |
| Lynn Institute of Norman | Norman | Oklahoma | 73069 | - |
| Centennial Health-Synexus | Oklahoma City | Oklahoma | 73111 | - |
| Tulsa Clinical Research | Tulsa | Oklahoma | 74104 | - |
| Oregon Center for Clinical Investigations | Portland | Oregon | 97214 | - |
| Thomas Jefferson University | Philadelphia | Pennsylvania | 19107 | - |
| Preferred Primary Care Physicians | Pittsburgh | Pennsylvania | 15236 | - |
| Frontier Clinical Research, LLC | Smithfield | Pennsylvania | 15478 | - |
| Preferred Primary Care Physicians, Jacob Murphy | Uniontown | Pennsylvania | 15401 | - |
| Abington Neurological Associates | Willow Grove | Pennsylvania | 19090 | - |
| Partners in Clinical Research | Cumberland | Rhode Island | 02864 | - |
| Ocean State Clinical Research Partners | Lincoln | Rhode Island | 02865 | - |
| Primary Care Associates/Synexus Clinical | Anderson | South Carolina | 29621 | - |
| Synexus Clinical Research US, Inc | Anderson | South Carolina | 29621 | - |
| Clinical Trials of South Carolina | Charleston | South Carolina | 29406 | - |
| Hillcrest Family Practice | Simpsonville | South Carolina | 29681 | - |
| ClinSearch | Chattanooga | Tennessee | 37421 | - |
| Holston Medical Group | Kingsport | Tennessee | 37660 | - |
| CNS Healthcare - Memphis | Memphis | Tennessee | 38119 | - |
| Psychiatry & Psychotherapy Partners Austin | Austin | Texas | 78737 | - |
| Tekton Research | Austin | Texas | 78745 | - |
| Synexus-US | Dallas | Texas | 75234 | - |
| UT Southwestern Medical Center | Dallas | Texas | 75390 | - |
| Ventavia Research Group | Fort Worth | Texas | 76104 | - |
| Centex Studies, Inc. | Houston | Texas | 77058 | - |
| Protenium Clinical Research | Hurst | Texas | 76054 | - |
| Clinical Trials of Texas | San Antonio | Texas | 78229 | - |
| Synexus Clinical Research US, Inc. | San Antonio | Texas | 78229 | - |
| ClinPoint Trials | Waxahachie | Texas | 75165 | - |
| Synexus-US | Murray | Utah | 84123 | - |
| Highland Clinical Research | Salt Lake City | Utah | 84124 | - |
| J. Lewis Research, Inc. / Foothill Family Clinic South | Salt Lake City | Utah | 84121 | - |
| J. Lewis Research, Inc. | South Jordan | Utah | 84095 | - |
| Charlottesville Medical Research | Charlottesville | Virginia | 22911 | - |
| Health Research of Hampton Roads, Inc. | Newport News | Virginia | 23606 | - |
| National Clinical Research, Inc | Richmond | Virginia | 23294 | - |
| Virginia Commonwealth University | Richmond | Virginia | 23219 | - |
| Virginia Commonwealth University | Richmond | Virginia | 23298 | - |
| Sentara Family Medicine Physicians | Virginia Beach | Virginia | 23456 | - |
| Northwest Clinical Research Center | Bellevue | Washington | 98004 | - |
| Eastside Therapeutic Resource and Core Clinical Research | Everett | Washington | 98201 | - |
| The Polyclinic | Seattle | Washington | 98104 | - |
| Puget Sound Neurology | Tacoma | Washington | 25328 | - |