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Clinical research

Clinical trial sites in the United States

Clinical trial sites: one pin for each physical site that hosts trials, placed from the address on the trial registration.

  • Trial site
  • Group of pins (click to zoom)

Showing the 40,000 busiest of 306,971 located sites. The map holds only the first 40,000, so narrow the filters to see the rest.

Each pin is one trial site, placed on the map from the address on the trial registration, so it shows part of where trials are run, not all of it. A site with no located address has no pin. A site with a public page on Pharma Observatory links to it; other sites show name, place and trial count only.

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Filters: Country: United States Clear all

Trial sites by region

Select a bar to filter by region.

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Trial sites by region
CategoryTrial sites
North America306,971

Top countries

Country of the site's address. Select a bar to filter.

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Bar colour shows the country's region, as in the chart by region.

Trial sites by country
CategoryTrial sites
United States306,971
Germany73,164
France73,137
Italy48,412
China45,861
Japan38,736
Spain36,429
United Kingdom32,401

Trial sites

306,971 sites. Sites with a public page link to it on Pharma Observatory.

  • Winchester Winchester, Virginia, United States 1 trial
  • Winchester Cardiology and Vascular Medicine, PC Winchester, Virginia, United States 1 trial
  • Winchester Center for Lung Disease New Haven, Connecticut, United States 1 trial
  • Winchester Chest Clinic ( Site 1093) New Haven, Connecticut, United States 1 trial
  • Winchester Hospital Radiation Oncology Center Winchester, Massachusetts, United States 1 trial
  • Winchester Medical Center/ Clinical Research Department Winchester, Virginia, United States 1 trial
  • Winchester, Patton, Burgess, PSC Whitley City, Kentucky, United States 1 trial
  • Windham Community Memorial Hospital Williamantic, Connecticut, United States 1 trial
  • Windham Eye Group Willimantic, Connecticut, United States 1 trial
  • Windham Hospital (WH) Willimantic, Connecticut, United States Ongoing trial 1 trial
  • Windham school South Windham, Maine, United States 1 trial
  • Winding Waters Medical Clinic Enterprise, Oregon, United States Ongoing trial 1 trial
  • Windom Allergy Sarasota, Florida, United States 1 trial
  • Windom Allergy, Asthma and Sinus Sarasota, Florida, United States 1 trial
  • Windom Allergy, Asthma and Sinus Specialists- Site Number : 8400041 Sarasota, Florida, United States Ongoing trial 1 trial
  • Windsor Convalescent of North Long Beach Long Beach, California, United States 1 trial
  • Windsor Dermatology - Psoriasis Treatment Center of Central New Jersey East Windsor, New Jersey, United States 1 trial
  • Windsor Dermatology dba Eczema Treatment Center of New Jersey East Windsor, New Jersey, United States 1 trial
  • Windsor Dermatology, P.C. East Windsor, New Jersey, United States 1 trial
  • Windsor Gardens Care Center of Fullerton Fullerton, California, United States 1 trial

Explore the data behind the map on Pharma Observatory

Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.

Visit Pharma Observatory