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 25, 2026.

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5,286 clinical trials

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Azithromycin Prophylaxis for PRElabor CEsarean DElivery Trial

for Obstetrical Complications

Sites in San Francisco +13 more locations

Sponsor: The George Washington University Biostatistics Center

Sex: Female·Age: All ages·Accepts healthy volunteers

Code: NCT06605118·Phase 3·Recruiting·Listed Sep 2024

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Comparison of the Outcomes of Single vs Multiple Arterial Grafts in Women

for Heart Diseases

Sites in Los Angeles, San Francisco +39 more locations

Sponsor: Weill Medical College of Cornell University

Sex: Female·Age: 18+

Code: NCT04124120·Recruiting·Listed Oct 2019

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Heated Intraperitoneal Chemotherapy Followed by Niraparib for Ovarian, Primary Peritoneal and Fallopian Tube Cancer

for Stage III Ovarian Cancer

Drug: Niraparib

Sites in Palo Alto, La Jolla +57 more locations

Sponsor: GOG Foundation

Sex: Female·Age: 18+

Code: NCT05659381·Phase 3·Recruiting·Listed Dec 2022

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Comparison of Uncomplicated Candidemia Therapy Duration in Children

for Invasive Candidiasis

Sites in Orange +20 more locations

Sponsor: Arkansas Children's Hospital Research Institute

Sex: All·Age: 120 Days+

Code: NCT05763251·Recruiting·Listed Mar 2023

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Improving Cognitive Rehabilitation Outcomes

for Mild Traumatic Brain Injury

Sites in San Diego +1 more location

Sponsor: VA Office of Research and Development

Sex: All·Age: 18+

Code: NCT07055633·Recruiting·Listed Jul 2025

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COMPASS Study for Metastatic Castration-resistant Prostate Cancer

for Prostate Cancer

Sites in San Francisco +2 more locations

Sponsor: Duke University

Sex: Male·Age: 18+

Code: NCT07050433·Recruiting·Listed Jul 2025

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OPtimal Adult Heart Transplant Immunosuppression With MicroRNA Levels

for Cardiac Failure

Sites in Los Angeles, Palo Alto +5 more locations

Sponsor: Inova Health Care Services

Sex: All·Age: 18 - 99

Code: NCT06939751·Recruiting·Listed Apr 2025

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Proactive Costs of Care Study

for Financial Burden

1 location in Los Angeles

Sponsor: Cedars-Sinai Medical Center

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

Code: NCT07217262·Recruiting·Listed Oct 2025

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LAM-001 in Lung Transplant Recipients With Bronchiolitis Obliterans Syndrome.

for Bronchiolitis Obliterans Syndrome

1 location in San Francisco

Sponsor: Steven Hays, MD

Sex: All·Age: 18+

Code: NCT06018766·Phase 2·Recruiting·Listed Aug 2023

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Prostate Cancer Screening for People at Genetic Risk for Aggressive Disease, PATROL Study

for Prostate Carcinoma

Sites in San Francisco, Duarte +5 more locations

Sponsor: University of Washington

Sex: Male·Age: 40+·Accepts healthy volunteers

Code: NCT04472338·Recruiting·Listed Jul 2020

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Targeting the Neurobiology of RRB in Autism Using N-acetylcysteine: Trial

for Autism Spectrum Disorder

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 3 - 12

Code: NCT05664789·Phase 2, Phase 3·Recruiting·Listed Dec 2022

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Detection of EEG-Based Biomarkers of Chronic Low Back Pain

for Chronic Low-back Pain

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 18 - 80·Accepts healthy volunteers

Code: NCT06025201·Recruiting·Listed Sep 2023

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Impact of the Coronavirus (COVID-19) on Patients With Cancer

for Cancer

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 18 - 99

Code: NCT04330521·Recruiting·Listed Apr 2020

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Blood Pressure Effects on Cognition and Brain Blood Flow in PD

for Parkinson Disease

1 location in San Diego

Sponsor: University of California, San Diego

Sex: All·Age: 50+

Code: NCT05400174·Recruiting·Listed Jun 2022

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Hyperbaric Oxygen Brain Injury Treatment Trial

for Traumatic Brain Injury

Sites in San Diego +7 more locations

Sponsor: Gaylan Rockswold

Sex: All·Age: 16 - 65

Code: NCT02407028·Phase 2·Recruiting·Listed Apr 2015

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Naive T Cell Depletion for Preventing Chronic Graft-versus-Host Disease in Children and Young Adults With Blood Cancers Undergoing Donor Stem Cell Transplant

for Acute Biphenotypic Leukemia

Sites in Los Angeles +8 more locations

Sponsor: Fred Hutchinson Cancer Center

Sex: All·Age: 6 Months - 26·Accepts healthy volunteers

Code: NCT03779854·Phase 2·Recruiting·Listed Dec 2018

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Association Between Exercise, Patient-Reported Outcomes, and Clinical Events in Adult Cancer Survivors

for Survivorship

Sites in Los Angeles, Duarte +2 more locations

Sponsor: Memorial Sloan Kettering Cancer Center

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

Code: NCT07030686·Recruiting·Listed Jun 2025

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Cardiac-Control Affecting Learning Through Mindfulness (CALM)

for Age-related Cognitive Decline

1 location in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 50 - 70·Accepts healthy volunteers

Code: NCT06410157·Recruiting·Listed May 2024

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Core Biopsies for Establishing a Breast Tumor Tissue Repository

for Breast Cancer

1 location in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 18+

Code: NCT02250352·Recruiting·Listed Sep 2014

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Continuous Positive Airway Pressure (CPAP) for Sleep Apnea in Pregnancy

for Obstructive Sleep Apnea of Adult

Sites in San Francisco +11 more locations

Sponsor: The George Washington University Biostatistics Center

Sex: Female·Age: 18+

Code: NCT03487185·Recruiting·Listed Apr 2018

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A Study Evaluating the Safety and Tolerability of Artesunate in Patients With Pulmonary Arterial Hypertension

for Pulmonary Arterial Hypertension (PAH)

1 location in Stanford

Sponsor: Joseph C. Wu

Sex: All·Age: 18 - 60

Code: NCT06872112·Phase 1·Recruiting·Listed Mar 2025

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Comparing Hearing Aid Fitting Methods in Blast-exposed Veterans

for Auditory Diseases, Central

Sites in Loma Linda, West Los Angeles & Sepulveda

Sponsor: VA Office of Research and Development

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

Code: NCT06309264·Recruiting·Listed Mar 2024

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Haploidentical Transplantation With Pre-Transplant Immunosuppressive Therapy for Patients With Sickle Cell Disease

for Sickle Cell Disease

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 1 - 30

Code: NCT03279094·Phase 1·Recruiting·Listed Sep 2017

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New Approach to Objectively Measure Social Engagement in Older Adults With Hearing Loss

for Hearing Loss, Bilateral (Causes Other Than Tumors)

2 locations in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 60+·Accepts healthy volunteers

Code: NCT06781749·Recruiting·Listed Jan 2025

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Mirdametinib in Patients With Advanced NF1-mutant Melanoma

for Advanced Unresectable Melanoma

Drug: Mirdametinib

1 location in San Francisco

Sponsor: Kevin Kim, MD

Sex: All·Age: 18+

Code: NCT07237100·Phase 2·Recruiting·Listed Nov 2025

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Characteristics of Patients With Recessive Dystrophic Epidermolysis Bullosa

for Epidermolysis Bullosa Dystrophica

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: All ages

Code: NCT01019148·Recruiting·Listed Nov 2009

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Effects of Processed Foods on Brain Reward Circuitry and Food Cue Learning

for Ultra-processed Foods (UP)

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 13 - 15

Code: NCT06165952·Recruiting·Listed Dec 2023

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Evaluation of Stool Based Markers for the Early Detection of Colorectal Cancers and Adenomas

for Colonic Neoplasms

Sites in Los Angeles +7 more locations

Sponsor: University of Michigan Rogel Cancer Center

Sex: All·Age: 18+

Code: NCT00843375·Recruiting·Listed Feb 2009

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A Study to See if an iPhone Weight Management App Can Help Promote Weight Loss in Adolescents and Young Adults After a Stem Cell Transplant

for Obesity

1 location in Los Angeles

Sponsor: Jonsson Comprehensive Cancer Center

Sex: All·Age: 13 - 30·Accepts healthy volunteers

Code: NCT04453072·Recruiting·Listed Jul 2020

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Study of ctDNA Guided Change in Tx for Refractory Minimal Residual Disease in Colon Adenocarcinomas

for Colon Adenocarcinoma

1 location in Orange

Sponsor: University of California, Irvine

Sex: All·Age: 18+

Code: NCT04920032·Phase 1·Recruiting·Listed Jun 2021

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An Organoid-based Functional Precision Medicine Trial in Osteosarcoma

for Osteosarcoma

1 location in Los Angeles

Sponsor: Jonsson Comprehensive Cancer Center

Sex: All·Age: All ages

Code: NCT06064682·Recruiting·Listed Oct 2023

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IIT2023-09-Chung-UpfrontTAD: Upfront TAD/SNB in Patients With Breast Cancer With Nodal Metastases

for Breast Cancer

Sites in Los Angeles, Pasadena & Tarzana

Sponsor: Alice Chung

Sex: Female·Age: 45+

Code: NCT06092892·Phase 2·Recruiting·Listed Oct 2023

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Better Sleep Study

for Depression in Adolescence

1 location in Los Angeles

Sponsor: Children's Hospital Los Angeles

Sex: All·Age: 12 - 18

Code: NCT06139861·Recruiting·Listed Nov 2023

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Digital Phenotyping for Psychosocial Screening in Adolescents and Young Adults With Cancer

for Cancer

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 10 - 25

Code: NCT07220343·Recruiting·Listed Oct 2025

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Assessing the Impact of dTMS on Neural Targets Associated With Alcohol Use Disorder

for Alcohol Use Disorder (AUD)

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 18 - 75

Code: NCT06949423·Recruiting·Listed Apr 2025

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Effects of Movement Retraining on Knee Loading in Individuals With Knee Osteoarthritis

for Osteoarthritis, Knee

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 18+

Code: NCT06208631·Recruiting·Listed Jan 2024

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Transcranial Direct Current Stimulation for Post Treatment Lyme Disease

for Post-Treatment Lyme Disease

Sites in San Francisco +1 more location

Sponsor: Columbia University

Sex: All·Age: 18 - 70

Code: NCT06915324·Recruiting·Listed Apr 2025

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Optimizing an Integrated Mind and Body Treatment for Insomnia: The SLEEPS Study 2

for Insomnia Disorder

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18+

Code: NCT07036705·Recruiting·Listed Jun 2025

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Ketogenic Diet and Brain Response in Anorexia Nervosa

for Anorexia Nervosa

1 location in San Diego

Sponsor: University of California, San Diego

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

Code: NCT06540703·Recruiting·Listed Aug 2024

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Disrupted Sleep and Concurrent Ectopy or Atrial Fibrillation

for Obstructive Sleep Apnea

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 21+

Code: NCT07220525·Recruiting·Listed Oct 2025

Apply to this trial