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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 307,932 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 America307,932

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 States307,932
France73,380
Germany73,266
Italy48,719
China46,305
Japan38,861
Spain36,598
United Kingdom32,508

Trial sites

307,932 sites. Sites with a public page link to it on Pharma Observatory.

  • Pfizer Investigational Site Greensboro, North Carolina, United States 12 trials
  • Pfizer Investigational Site DeSoto, Texas, United States 12 trials
  • Pfizer Investigational Site Santa Rosa, California, United States 12 trials
  • Pfizer Investigational Site Creve Coeur, Missouri, United States 12 trials
  • Pfizer Investigational Site Gurnee, Illinois, United States 12 trials
  • Philadelphia Clinical Research, LLC Philadelphia, Pennsylvania, United States 12 trials
  • Phoenix Clinical LLC Phoenix, Arizona, United States Ongoing trial 12 trials
  • Phoenix Clinical Research Tamarac, Florida, United States Ongoing trial 12 trials
  • Phoenix Clinical Research, LLC Tamarac, Florida, United States 12 trials
  • Phoenix Medical Research Prairie Village, Kansas, United States 12 trials
  • Phonak Audiology Research Center Aurora, Illinois, United States Ongoing trial 12 trials
  • Physicians East Endocrinology Greenville, North Carolina, United States Ongoing trial 12 trials
  • Piedmont Hematology Oncology Associates Winston-Salem, North Carolina, United States 12 trials
  • Planned Parenthood Association of Utah Salt Lake City, Utah, United States Ongoing trial 12 trials
  • Portneuf Medical Center Pocatello, Idaho, United States Ongoing trial 12 trials
  • Poudre Valley Radiation Oncology Fort Collins, Colorado, United States 12 trials
  • Praxair Cancer Center at Danbury Hospital Danbury, Connecticut, United States 12 trials
  • Premier Family Physicians Austin, Texas, United States Ongoing trial 12 trials
  • Premier Pulmonary Critical Care and Sleep Medicine Denison, Texas, United States Ongoing trial 12 trials
  • Presbyterian Cancer Treatment Center at Presbyterian Kaseman Hospital Albuquerque, New Mexico, United States Ongoing trial 12 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