Paid Clinical Trials in California

California has 6,384 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: July 29, 2026.

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5,286 clinical trials

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Safety and Durability of Sirolimus for Treatment of LAM

for Lymphangioleiomyomatosis

Sites in Stanford +7 more locations

Sponsor: University of Cincinnati

Sex: Female·Age: 18+

Code: NCT02432560·Recruiting·Listed May 2015

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CYP2C19 Variants and Limonene Metabolism

for CYP2C19 Genetic Variants

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 18 - 45·Accepts healthy volunteers

Code: NCT05078723·Recruiting·Listed Oct 2021

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Topical Treatment for TMJ Arthralgia

for TMJ Pain

1 location in San Francisco

Sponsor: University of the Pacific

Sex: All·Age: 18+

Code: NCT05816226·Phase 3·Recruiting·Listed Apr 2023

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Pharmacologic Weight Loss as Adjunct Therapy for Ulcerative Colitis in Obese Patients

for Colitis, Ulcerative

1 location in La Jolla

Sponsor: University of California, San Diego

Sex: All·Age: 18 - 80

Code: NCT04721873·Phase 2·Recruiting·Listed Jan 2021

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Erector Spinae Plane Block Catheters and Intrathecal Morphine for Hepatic Resection

for Hepatic Resection

1 location in San Diego

Sponsor: University of California, San Diego

Sex: All·Age: 18+

Code: NCT04849455·Phase 4·Recruiting·Listed Apr 2021

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International REgistry of COnservative or Radical Treatment of Localized Kidney Tumors

for Kidney Cancer

Sites in Los Angeles, San Diego +5 more locations

Sponsor: Azienda Ospedaliero-Universitaria Careggi

Sex: All·Age: 18+

Code: NCT05363657·Recruiting·Listed May 2022

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PyL in Patients With High Risk and Biochemically Recurrent Prostate Cancer

for Prostate Cancer

1 location in Irvine

Sponsor: Hoag Memorial Hospital Presbyterian

Sex: Male·Age: 18+

Code: NCT04700332·Phase 2·Recruiting·Listed Jan 2021

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Validating Gulf War Illness Blood Biomarkers

for Gulf War Syndrome

Sites in Palo Alto +2 more locations

Sponsor: Roskamp Institute Inc.

Sex: All·Age: 35+·Accepts healthy volunteers

Code: NCT05736146·Recruiting·Listed Feb 2023

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Quantitative Neuromuscular Monitoring and Gastric Bypass Surgery

for Sugammadex

1 location in Sacramento

Sponsor: University of California, Davis

Sex: All·Age: 18+

Code: NCT05886218·Recruiting·Listed Jun 2023

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Development of Radiation Free Whole Body Magnetic Resonance (MR) Imaging Technique for Staging Children With Cancer

for Cancer

1 location in Stanford

Sponsor: Heike E Daldrup-Link

Sex: All·Age: 6 - 40

Code: NCT01542879·Phase 1, Phase 2·Recruiting·Listed Mar 2012

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Janus Kinase Inhibition to Prevent Ventilator-induced Diaphragm Dysfunction

for Diaphragm Injury

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 18+

Code: NCT03681275·Phase 2·Recruiting·Listed Sep 2018

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Evaluation of the Effects of a Rehabilitation Program in Individuals with Spine Pain

for Neck Pain

1 location in San Diego

Sponsor: SpineZone Medical Fitness, Inc

Sex: All·Age: 18 - 89

Code: NCT04081896·Recruiting·Listed Sep 2019

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Combined Transcranial Magnetic Stimulation and Therapy for MTBI Related Headaches

for TBI (Traumatic Brain Injury)

1 location in San Diego

Sponsor: Veterans Medical Research Foundation

Sex: All·Age: 18 - 65

Code: NCT05176392·Recruiting·Listed Jan 2022

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PrEPsmart 2-1-1 Pilot

for HIV-1-infection

1 location in San Francisco

Sponsor: Public Health Foundation Enterprises, Inc.

Sex: Male·Age: 18+·Accepts healthy volunteers

Code: NCT06631365·Phase 2·Recruiting·Listed Oct 2024

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Trial of Latex Vs Non-latex Hemorrhoid Banding

for Hemorrhoid

1 location in Pasadena

Sponsor: Huntington Memorial Hospital

Sex: All·Age: 18+

Code: NCT06625138·Recruiting·Listed Oct 2024

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Blood Flow Restriction Training on Upper Extremity Grip Strength

for Healthy Volunteers

1 location in Pomona

Sponsor: Casa Colina Hospital and Centers for Healthcare

Sex: All·Age: 18 - 35·Accepts healthy volunteers

Code: NCT06535373·Recruiting·Listed Aug 2024

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Aspiration in Acute Respiratory Failure Survivors 2

for Dysphagia

Sites in Stanford +4 more locations

Sponsor: University of Colorado, Denver

Sex: All·Age: 18+

Code: NCT05108896·Recruiting·Listed Nov 2021

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Effect of Tirzepatide on Progression of Coronary Atherosclerosis Using MDCT

for Type II Diabetes

Drug: Tirzepatide

1 location in Torrance

Sponsor: Matthew J. Budoff

Sex: All·Age: 40 - 80

Code: NCT05708859·Phase 4·Recruiting·Listed Feb 2023

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Early vs. Late Time-Restricted Eating in Adolescents With Obesity (EL TREA)

for Pediatric Obesity

1 location in Los Angeles

Sponsor: Children's Hospital Los Angeles

Sex: All·Age: 12 - 21

Code: NCT05740254·Recruiting·Listed Feb 2023

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Effects of Nicotine Pouch Characteristics on Perceptions and Behavior

for Nicotine Pouch Self-Administration

2 locations in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 21 - 35·Accepts healthy volunteers

Code: NCT06597435·Recruiting·Listed Sep 2024

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Repurposing Nucleoside Reverse Transcriptase Inhibitors for Treatment of AD

for Alzheimer Disease, Early Onset

Sites in Los Angeles +1 more location

Sponsor: Butler Hospital

Sex: All·Age: 50 - 85

Code: NCT04500847·Phase 1·Recruiting·Listed Aug 2020

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Title: A Multimodal Exercise Program With Gamification for Parkinson Disease (MEP+G)

for Parkinson Disease

1 location in Ventura

Sponsor: California State University, Northridge

Sex: All·Age: 40 - 80

Code: NCT06538298·EARLY_Phase 1·Recruiting·Listed Aug 2024

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Palmitoylethanolamide for Chronic Inflammatory Pain Conditions

for Chronic Pain

1 location in San Diego

Sponsor: Navy Medical Center San Diego

Sex: All·Age: All ages

Code: NCT06273462·Phase 2·Recruiting·Listed Feb 2024

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Genomic Biomarker-Selected Umbrella Neoadjuvant Study for High Risk Localized Prostate Cancer

for Prostate Cancer

Sites in Sacramento +4 more locations

Sponsor: University of British Columbia

Sex: Male·Age: 18+

Code: NCT04812366·Phase 2·Recruiting·Listed Mar 2021

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Diaphragmatic Breathing Exercises in Total Knee Arthroplasty Patients

for Anesthesia and Analgesia

1 location in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 50 - 90

Code: NCT04336579·Recruiting·Listed Apr 2020

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Wearable Devices and Biomarkers Project (Healthiomics)

for Brain Cancer

1 location in San Diego

Sponsor: CureScience

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT05106725·Recruiting·Listed Nov 2021

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Faith in Action! A Church-Based Navigation Model to Increase Breast Cancer Screening in Korean Women

for Breast Cancer Female

2 locations in Los Angeles

Sponsor: Cedars-Sinai Medical Center

Sex: Female·Age: 45 - 80·Accepts healthy volunteers

Code: NCT05298605·Recruiting·Listed Mar 2022

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Feasibility of Remote Activity Assessment and PRO Collection Among Transgender Cancer Survivors

for Neoplasms

1 location in Los Angeles

Sponsor: Cedars-Sinai Medical Center

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT05391217·Recruiting·Listed May 2022

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Benefits of Endoscopic Bariatric Procedures

for Obesity

1 location in Los Angeles

Sponsor: Cedars-Sinai Medical Center

Sex: All·Age: 18 - 75·Accepts healthy volunteers

Code: NCT05514288·Recruiting·Listed Aug 2022

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LEAPTogether: An Intergenerational Intervention to Address Loneliness and Social Isolation

for Social Isolation

1 location in Beverly Hills

Sponsor: Cedars-Sinai Medical Center

Sex: All·Age: 18+·Accepts healthy volunteers

Code: NCT05831475·Recruiting·Listed Apr 2023

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Mechanisms of Semaglutide Therapy in Heart Failure Patients

for Heart Failure

Drug: Semaglutide

Sites in Palo Alto & Stanford

Sponsor: University Medical Centre Ljubljana

Sex: All·Age: 20 - 80

Code: NCT06541509·Phase 1, Phase 2·Recruiting·Listed Aug 2024

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Artemis Sleep Countermeasures

for Fatigue

1 location in Mountain View

Sponsor: National Aeronautics and Space Administration (NASA)

Sex: All·Age: 18 - 60·Accepts healthy volunteers

Code: NCT06531733·Recruiting·Listed Aug 2024

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Effect of a Fasting Mimicking Diet on Patients With Multiple Sclerosis (FMDMS)

for Multiple Sclerosis

1 location in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 18 - 55

Code: NCT06515782·Recruiting·Listed Jul 2024

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Creatine Supplementation At Simulated Altitude

for Exercise Performance

1 location in San Luis Obispo

Sponsor: California Polytechnic State University-San Luis Obispo

Sex: All·Age: 18 - 40·Accepts healthy volunteers

Code: NCT06489587·Recruiting·Listed Jul 2024

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SAFETY-A for Promoting Equity in Suicide Prevention Outcomes in Schools

for Suicidal Ideation

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 11+

Code: NCT05834660·Recruiting·Listed Apr 2023

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Regional Blood Flow During Peripheral Heating

for Blood Flow

1 location in San Diego

Sponsor: San Diego State University

Sex: All·Age: 18 - 65·Accepts healthy volunteers

Code: NCT06192992·Recruiting·Listed Jan 2024

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Music-Based Interventions, Aging, Alzheimer's Disease

for Speech Perception

1 location in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 65+·Accepts healthy volunteers

Code: NCT06152211·Recruiting·Listed Nov 2023

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Socially Assistive Robots to Enhance Magnification Device Use for Reading

for Low Vision

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 18+

Code: NCT04190134·Phase 1·Recruiting·Listed Dec 2019

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Continuous Glucose Monitoring in Infants

for Neonatal Hypoglycemia

1 location in La Jolla

Sponsor: University of California, San Diego

Sex: All·Age: 1 Hour - 2 Hours·Accepts healthy volunteers

Code: NCT04458649·Recruiting·Listed Jul 2020

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GALLANT: Metronomic Gemcitabine, Doxorubicin, Docetaxel and Nivolumab for Advanced Sarcoma

for Sarcoma

Drug: Nivolumab

1 location in Santa Monica

Sponsor: Sarcoma Oncology Research Center, LLC

Sex: All·Age: 18+

Code: NCT04535713·Phase 2·Recruiting·Listed Sep 2020

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