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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.

  • William M. Lee, M.D. Dallas, Texas, United States 1 trial
  • William Marsh Rice University Houston, Texas, United States 1 trial
  • William Marston, MD Chapel Hill, North Carolina, United States 1 trial
  • William Martinez Nashville, Tennessee, United States 1 trial
  • William Moseley, MD San Diego, California, United States 1 trial
  • William Muir MD Spine Surgery Las Vegas, Nevada, United States 1 trial
  • William Oberheim Albany, New York, United States 1 trial
  • William Olney, MD 21 Whitehall Rd, Suite 200 Rochester, New Hampshire, United States 1 trial
  • William P Coleman III, MD Metairie, Louisiana, United States 1 trial
  • William P. Adams Plastic Surgery University Park, Texas, United States Ongoing trial 1 trial
  • William R. Bliss Cancer Center Ames, Iowa, United States 1 trial
  • William S Middleton Mem VA Hosp Madison, Wisconsin, United States 1 trial
  • William S Middleton VA Hospital GRECC Madison, Wisconsin, United States 1 trial
  • William S. Middleton Memorial Hospital Madison, Wisconsin, United States Ongoing trial 1 trial
  • William S. Middleton Memorial VA Madison, Wisconsin, United States Ongoing trial 1 trial
  • William S. Middleton VA Hospital Madison, Wisconsin, United States 1 trial
  • William S. Mirando, MD, LLC Ashtabula, Ohio, United States 1 trial
  • William S. Muir, MD, PC Las Vegas, Nevada, United States 1 trial
  • William Sansum Diabetes Research Institute Santa Barbara, California, United States 1 trial
  • William Shuler, MD Tulsa, Oklahoma, 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