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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 307,205 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.

Looking for contract research suppliers and CROs? Visit Contract Research Map

Looking to track new and ongoing clinical trials? Visit Trial Insights

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 America307,205

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 States307,205
France73,197
Germany73,176
Italy48,496
China45,975
Japan38,756
Spain36,445
United Kingdom32,416

Trial sites

307,205 sites. Sites with a public page link to it on Pharma Observatory.

  • Oklahoma Foundation for Digestive Research Oklahoma City, Oklahoma, United States 29 trials
  • Olive View-University of California Los Angeles Medical Center Sylmar, California, United States Ongoing trial 29 trials
  • Olympic Medical Cancer Care Center Sequim, Washington, United States Ongoing trial 29 trials
  • Ophthalmic Consultants of Long Island Lynbrook, New York, United States 29 trials
  • Optimal Research Peoria, Illinois, United States Ongoing trial 29 trials
  • Orange County Retina Medical Group Santa Ana, California, United States Ongoing trial 29 trials
  • Our Lady of the Lake Physicians Group - Medical Oncology Baton Rouge, Louisiana, United States Ongoing trial 29 trials
  • PCSD - Feighner Research San Diego, California, United States 29 trials
  • PMG Research of Charlotte, LLC Charlotte, North Carolina, United States 29 trials
  • Pacific Hematology Oncology Associates San Francisco, California, United States Ongoing trial 29 trials
  • Penn State Health Hershey, Pennsylvania, United States Ongoing trial 29 trials
  • Pfizer Investigational Site Walnut Creek, California, United States 29 trials
  • Pfizer Investigational Site Long Beach, California, United States 29 trials
  • Pfizer Investigational Site Toledo, Ohio, United States 29 trials
  • Pfizer Investigational Site The Bronx, New York, United States 29 trials
  • Pfizer Investigational Site Greer, South Carolina, United States 29 trials
  • Pfizer Investigational Site Mesa, Arizona, United States 29 trials
  • Pfizer Investigational Site Scottsdale, Arizona, United States 29 trials
  • Precision Trials Phoenix, Arizona, United States Ongoing trial 29 trials
  • Princeton Center for Clinical Research Skillman, New Jersey, United States 29 trials

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