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Parkinson's Disease clinical trials recruiting in the U.S.

210 studies for Parkinson's Disease are recruiting participants at sites across the United States.

Parkinson's disease (PD) is a movement disorder. It causes tremors, stiffness, and slow movement. It gets worse over time. Learn what can help.

Cities with the most studies

• New York City, NY23 studies
• Boston, MA20 studies
• Cleveland, OH18 studies
• Minneapolis, MN17 studies
• Nashville, TN16 studies
• San Francisco, CA15 studies
• Philadelphia, PA15 studies
• Farmington Hills, MI14 studies
• Miami, FL14 studies
• New Haven, CT14 studies
• Chicago, IL14 studies
• Gainesville, FL13 studies
• Charleston, SC13 studies
• Tampa, FL12 studies
• Atlanta, GA12 studies
• Aurora, CO12 studies
• Portland, OR12 studies
• Orlando, FL11 studies
• Washington, DC11 studies
• Birmingham, AL11 studies
• Round Rock, TX10 studies
• Ann Arbor, MI10 studies
• Durham, NC10 studies
• Los Angeles, CA10 studies
• Houston, TX10 studies
• Kirkland, WA9 studies
• Dallas, TX9 studies
• Baltimore, MD9 studies
• Kansas City, KS9 studies
• Mountain View, CA9 studies
• Boca Raton, FL9 studies
• St. Louis, MO9 studies
• Las Vegas, NV8 studies
• Spokane, WA7 studies
• Phoenix, AZ7 studies
• San Diego, CA6 studies
• Lexington, KY6 studies
• Columbus, OH6 studies
• Denver, CO6 studies
• Seattle, WA6 studies

By state

• Alabama12 studies
• Arizona13 studies
• Arkansas5 studies
• California37 studies
• Colorado18 studies
• Connecticut19 studies
• Delaware3 studies
• District of Columbia5 studies
• Florida35 studies
• Georgia13 studies
• Illinois19 studies
• Indiana5 studies
• Iowa4 studies
• Kansas11 studies
• Kentucky9 studies
• Louisiana3 studies
• Maryland15 studies
• Massachusetts21 studies
• Michigan22 studies
• Minnesota19 studies
• Missouri10 studies
• Nevada8 studies
• New Jersey3 studies
• New Mexico5 studies
• New York31 studies
• North Carolina15 studies
• Ohio25 studies
• Oklahoma4 studies
• Oregon12 studies
• Pennsylvania19 studies
• South Carolina13 studies
• Tennessee19 studies
• Texas27 studies
• Utah6 studies
• Vermont4 studies
• Virginia11 studies
• Washington16 studies
• Wisconsin4 studies

Recently updated studies

From ClinicalTrials.gov, data retrieved Sep 29, 2026. Each study sets its own eligibility; the study team decides who can join.