| Sleep Disorders Center of America | Birmingham | Alabama | 35213 | - |
| The University of Alabama/Institute for Rural Health Research | Tuscaloosa | Alabama | 35401 | - |
| Chandler Clinical Trials | Chandler | Arizona | 85224 | - |
| Desert Clinical Reserach, LLC/CCT Research | Mesa | Arizona | 85213 | - |
| Foothills Research Center/CCT Research | Phoenix | Arizona | 85044 | - |
| Fiel Family and Sports Medicine/CCT Research | Tempe | Arizona | 85283 | - |
| Noble Clinical Research | Tucson | Arizona | 85704 | - |
| Preferred Research Partners, Inc. | Little Rock | Arkansas | 72211 | - |
| Orange County Research Institute | Anaheim | California | 92801 | - |
| Core Healthcare Group | Cerritos | California | 90703 | - |
| Exalt Clinical Research, Inc. | Chula Vista | California | 91910 | - |
| Collaborative Neuroscience Research, LLC | Los Alamitos | California | 90720 | - |
| Santa Monica Clinical Trials | Los Angeles | California | 90025 | - |
| Empire Clinical Research | Pomona | California | 91767 | - |
| Probe Clinical Research Corporation | Riverside | California | 92501 | - |
| Pacific Research Network | San Diego | California | 92103 | - |
| TriValley Sleep Center | San Ramon | California | 94583 | - |
| SDS Clinical Trials, Inc. | Santa Ana | California | 92705 | - |
| Providere Research Inc. | West Covina | California | 91790 | - |
| Mountain View Clinical Research, Inc. | Denver | Colorado | 80209 | - |
| Meris Clinical Research | Brandon | Florida | 33511 | - |
| Teradan Clinical Trials | Brandon | Florida | 33511 | - |
| St. Francis Medical Institute | Clearwater | Florida | 33765 | - |
| Nouvelle Clinical Research | Cutler Bay | Florida | 33189 | - |
| Arrow Clinical Trials | Daytona Beach | Florida | 32117 | - |
| Canvas Clinical Research | Lake Worth | Florida | 33467 | - |
| Florida Lung & Sleep Associates | Lehigh Acres | Florida | 33971 | - |
| Advanced Medical Research Institute | Miami | Florida | 33174 | - |
| Flourish Research | Miami | Florida | 33186 | - |
| Ivetmar Medical Group, LLC | Miami | Florida | 33155 | - |
| PharmaDev Clinical Research Institute, LLC | Miami | Florida | 33176 | - |
| Renstar Medical Research | Ocala | Florida | 34470 | - |
| Clinical Neuroscience Solutions, Inc. | Orlando | Florida | 32801 | - |
| JSV Clinical Research Study Inc. | Tampa | Florida | 33634 | - |
| Palm Beach Research Center | West Palm Beach | Florida | 33409 | - |
| Central Florida Pediatric Sleep Disorders d/b/a Florida Pediatric Institute, LLC | Winter Park | Florida | 32789 | - |
| Clinical Site Partners, LLC dba Flourish Research | Winter Park | Florida | 32789 | - |
| Atlanta Center for Medical Research | Atlanta | Georgia | 30331 | - |
| Neurotrials Research Inc | Atlanta | Georgia | 30328 | - |
| CenExel iResearch, LLC | Decatur | Georgia | 30030 | - |
| Georgia Neurology and Sleep Medicine Associates | Suwanee | Georgia | 30024 | - |
| Medster Research | Valdosta | Georgia | 31605 | - |
| St. Luke's Idaho Pulmonary Associates - Meridian Clinic | Meridian | Idaho | 83642 | - |
| Chicago Research Center, Inc. | Chicago | Illinois | 60634 | - |
| University of Kansas Medical Center | Kansas City | Kansas | 66160 | - |
| Advanced ENT and Allergy | Louisville | Kentucky | 40220 | - |
| Centennial Medical Group Research Department | Columbia | Maryland | 21045 | - |
| Sleep Disorders Centers of the Mid-Atlantic | Glen Burnie | Maryland | 21061 | - |
| Velocity Clinical Research | Rockville | Maryland | 20854 | - |
| Neurocare, Inc. | Newton | Massachusetts | 02459 | - |
| Infinity Medical Research | North Dartmouth | Massachusetts | 02747 | - |
| Baystate Clinical Trials Unit | Springfield | Massachusetts | 01107 | - |
| University of Michigan Clinical Research Unit | Ann Arbor | Michigan | 48109 | - |
| Revive Research Institute, Inc. | Lathrup Village | Michigan | 48076 | - |
| Henry Ford Medical Center - Columbus | Novi | Michigan | 48377 | - |
| Clinical Neurophysiology Services PC | Sterling Heights | Michigan | 48314 | - |
| Sleep Medicine and Research Center, St. Luke's Hospital | Chesterfield | Missouri | 63017 | - |
| Healthcare Research Network | Hazelwood | Missouri | 63042 | - |
| Clayton Sleep Institute, LLC | St Louis | Missouri | 63123 | - |
| Henderson Clinical Trials | Henderson | Nevada | 89052 | - |
| Las Vegas Clinical Trials, LLC | North Las Vegas | Nevada | 89030 | - |
| Clinilabs Drug Development Corporation | Eatontown | New Jersey | 07724 | - |
| Sleep Dynamics | Neptune City | New Jersey | 07753 | - |
| Maimonides Sleep Arts & Sciences | Albuquerque | New Mexico | 87107 | - |
| Northwell Health | New Hyde Park | New York | 11042 | - |
| Research Carolina Elite | Denver | North Carolina | 28037 | - |
| Clinical Research of Gastonia | Gastonia | North Carolina | 28054 | - |
| Peters Medical Research LLC | High Point | North Carolina | 27260 | - |
| Advanced Respiratory and Sleep Medicine | Huntersville | North Carolina | 28078 | - |
| Coastal Carolina Health Care, P.A. Pulmonary and Sleep Medicine | New Bern | North Carolina | 28562 | - |
| Accellacare | Wilmington | North Carolina | 28412 | - |
| Lillestol Research | Fargo | North Dakota | 58104 | - |
| NeuroScience Research Center, LLC | Canton | Ohio | 44718 | - |
| CTI Clinical Research Center | Cincinnati | Ohio | 45212 | - |
| Intrepid Research, LLC | Cincinnati | Ohio | 45245 | - |
| Northwest Research Center | Portland | Oregon | 97202 | - |
| Abington Neurological Associates | Abington | Pennsylvania | 19001 | - |
| Respiratory Specialists | Wyomissing | Pennsylvania | 19610 | - |
| Lowcountry Lung and Critical Care, PA | Charleston | South Carolina | 29406 | - |
| Tribe Clinical Research, LLC | Greenville | South Carolina | 29607 | - |
| Velocity Clinical Research, Greenville | Greenville | South Carolina | 29615 | - |
| OnSite Clinical Solutions, LLC | Rock Hill | South Carolina | 29732 | - |
| Chattanooga Research & Medicine | Chattanooga | Tennessee | 37404 | - |
| Clinical Neuroscience Solutions, Inc. | Memphis | Tennessee | 38119 | - |
| FutureSearch Trials of Neurology | Austin | Texas | 78731 | - |
| FutureSearch Trials of Dallas | Dallas | Texas | 75231 | - |
| Houston Clinical Research Associates | Houston | Texas | 77070 | - |
| Memorial Hermann Village | Houston | Texas | 77043 | - |
| Huntsville Research Institute | Huntsville | Texas | 77340 | - |
| Element Research Group | San Antonio | Texas | 78258 | - |
| Sleep Therapy and Research Center | San Antonio | Texas | 78229 | - |
| South Ogden Family Medicine/CCT Research | South Ogden | Utah | 84405 | - |
| Sleep Disorder Center of the Mid-Atlantic | Vienna | Virginia | 22182 | - |