Paid Clinical Trials in California

California has 6,346 paid clinical trials enrolling now across cities including Los Angeles, San Francisco and San Diego. Search by condition, age, or phase to find compensated research studies accepting participants near you.

Research sites in California include Stanford Medicine, UCLA Health and UCSF, running studies across oncology, cardiology, neurology, and more. Both patients and healthy volunteers may qualify. Most studies offer compensation for time and travel.

Recruiting trial data synced daily from ClinicalTrials.gov. Last sync: .

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5,273 clinical trials

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A Study to Evaluate the Safety and Efficacy of Pumitamig in Combination With Chemotherapy Versus Nivolumab in Combination With Chemotherapy in Participants With Previously Untreated Advanced or Metastatic Gastric, Gastroesophageal Junction, or Esophageal Adenocarcinoma (ROSETTA Gastric-204)

for Untreated Advanced or Metastatic Gastric, Gastroesophageal Junction, or Esophageal Adenocarcinoma
Drug: Nivolumab
Sites in Los Angeles, San Francisco +32 more locations
Sponsor: Bristol-Myers Squibb
Sex: All·Age: 18+
Code: NCT07221149·Phase 2, Phase 3·Recruiting·Listed Oct 2025
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A Phase 2, Randomized, Placebo Controlled, Multicenter, Masked Study to Evaluate the Efficacy, Safety, Tolerability, and Pharmacodynamics of Multidose APL 3007 in Combination With Syfovre/Pegcetacoplan (APL-2) in Patients Diagnosed With Geographic Atrophy Secondary to Age Related Macular Degeneratio

for Geographic Atrophy Secondary to Age-related Macular Degeneration
Drug: Pegcetacoplan
Sites in Walnut Creek, Torrance +76 more locations
Sponsor: Apellis Pharmaceuticals, Inc.
Sex: All·Age: 60+
Code: NCT07215390·Phase 2·Recruiting·Listed Oct 2025
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