Paid Clinical Trials in California

California has 6,497 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: June 12, 2026.

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6,497 clinical trials

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Cabotegravir & Rilpivirine Antiretroviral Therapy in Pregnancy

for HIV -1 Infection

10 locations incl. La Jolla

Sponsor: International Maternal Pediatric Adolescent AIDS Clinical Trials Group

Sex: Female·Age: 18+

Code: NCT07637942·Not Yet Recruiting

Geriatric Assessment and Management for Older Adults Undergoing Chemotherapy and Radiation Therapy for Head and Neck Cancer and Their Family Caregivers

for Localized Head and Neck Carcinoma

1 location in Duarte

Sponsor: City of Hope Medical Center

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

Code: NCT07225855·Recruiting

Apply to this trial

Enhancing Veteran-Clinical Collaboration in VA PRRCs

for Schizophrenia

3 locations incl. San Diego

Sponsor: VA Office of Research and Development

Sex: All·Age: 18+

Code: NCT06898879·Not Yet Recruiting

Varenicline for Smoking Reduction in Veterans Not Ready To Quit

for Veterans

4 locations incl. San Diego

Sponsor: VA Office of Research and Development

Sex: All·Age: 21+

Code: NCT06966362·Phase 4·Not Yet Recruiting

ctDNA-Guided Therapy for Relapsed/Refractory Hodgkin Lymphoma

for Hodgkin Lymphoma, Adult

6 locations incl. Davis

Sponsor: Michael Spinner, MD

Sex: All·Age: 18+

Code: NCT07021989·Phase 2·Not Yet Recruiting

Durability of Yoga for Veterans With Low Back Pain

for Chronic Low Back Pain

1 location in San Diego

Sponsor: VA Office of Research and Development

Sex: All·Age: 18+

Code: NCT07053787·Not Yet Recruiting

Personalized vs Standard of Care Treatment for Helicobacter Pylori Eradication Among Veterans

for Helicobacter Pylori

1 location in San Diego

Sponsor: VA Office of Research and Development

Sex: All·Age: 18+

Code: NCT07104318·Phase 3·Not Yet Recruiting

Evaluating the Impact of CONNECT in a Multilingual Population

for Smoking Cessation

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 50 - 80·Accepts healthy volunteers

Code: NCT07111936·Not Yet Recruiting

Rapid Acceleration Process for Intensive Treatment of PTSD in 5 Days

for PTSD

2 locations incl. Palo Alto

Sponsor: VA Office of Research and Development

Sex: All·Age: 18 - 70

Code: NCT07167940·Phase 3·Not Yet Recruiting

CKM For Safe Use of SGLT2i in Type 1 Diabetes

for Type 1 Diabetes (T1D)

1 location in La Jolla

Sponsor: University of California, San Diego

Sex: All·Age: 18+

Code: NCT07211802·Phase 3·Not Yet Recruiting

Phase I Trial of pH Resections of GBM at VA

for Glioblastoma

1 location in West Los Angeles

Sponsor: VA Office of Research and Development

Sex: All·Age: 18+

Code: NCT07218367·Phase 1·Not Yet Recruiting

Evaluating Biomarkers of Cognitive Dysfunction in Patients With Cancer

for Brain Tumor Adult

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18+

Code: NCT07226466·Not Yet Recruiting

Comparison of FNB to EUS-CNB for Pancreatic Lesions

for Diagnosis of a Pancreaticobiliary Disorder

1 location in Sacramento

Sponsor: University of California, Davis

Sex: All·Age: 18 - 89

Code: NCT07240818·Not Yet Recruiting

Pressurized Intraperitoneal Aerosolized Chemotherapy With Mitomycin for the Treatment of Unresectable Appendix or Colorectal Cancer With Peritoneal Metastases, The IMPACT Trial

for Metastatic Appendix Carcinoma

5 locations incl. Goodyear

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT07271355·Phase 3·Not Yet Recruiting

Pembrolizumab in Combination With Chemotherapy for the Treatment of Frail Hodgkin Lymphoma Patients Ineligible for Standard Treatment

for Classic Hodgkin Lymphoma

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT07275216·Phase 2·Recruiting

Apply to this trial

kTMP in Chronic Stroke

for Stroke

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18 - 80

Code: NCT07277595·Not Yet Recruiting

Employing Peer Outreach and Whole Health in Recovery for Homeless-Experienced Veterans

for Substance Use Disorder

1 location in Palo Alto

Sponsor: VA Office of Research and Development

Sex: All·Age: 18+

Code: NCT07309224·Not Yet Recruiting

Local Antibiotic Concentrations With Tissue Expanders in Breast Reconstruction

for Tissue Expander Based Breast Reconstruction

1 location in Sacramento

Sponsor: University of California, Davis

Sex: Female·Age: 18+

Code: NCT07339215·Not Yet Recruiting

SleepSMART for Veterans With Insomnia and Mild Cognitive Impairment

for Insomnia

1 location in San Diego

Sponsor: VA Office of Research and Development

Sex: All·Age: 60+

Code: NCT07397182·Not Yet Recruiting

Finger Plethysmography to Predict Fluid Responsiveness in Healthy Pregnancy and Severe Preeclampsia

for Pre-Eclampsia, Severe

1 location in Palo Alto

Sponsor: Stanford University

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

Code: NCT07430254·Not Yet Recruiting

Efficacy of Integrating Next Generation Sequencing for Treatment of Surgical Site Infection After Fracture Fixation:

for Next Generation Sequencing (NGS)

18 locations incl. Tuscaloosa

Sponsor: Johns Hopkins Bloomberg School of Public Health

Sex: All·Age: 18 - 84

Code: NCT07458230·Phase 3·Not Yet Recruiting

Pilot Exploration of Platelet Characterization of Platelet Rich Plasma Created by Two Different Systems

for Knee Osteoarthristis

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18+

Code: NCT07491367·Phase 4·Not Yet Recruiting

Upadacitinib in Patients Hospitalized With Acute Severe Ulcerative Colitis

for UC - Ulcerative Colitis

Drug: Upadacitinib

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18 - 75

Code: NCT07502339·Phase 4·Not Yet Recruiting

Testing an Adaptive Intervention for Peer-Supported Mobile Health for Primary Care Veterans With Psychological Distress

for Psychological Distress

5 locations incl. Palo Alto

Sponsor: VA Office of Research and Development

Sex: All·Age: 18+

Code: NCT07507747·Not Yet Recruiting

Systemic and Topical Antiviral Control of Cytomegalovirus Anterior Uveitis: Treatment Outcomes - Trials I and II

for Cytomegalovirus (CMV)

2 locations incl. Los Angeles

Sponsor: University of California, San Francisco

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

Code: NCT07513623·Phase 2·Not Yet Recruiting

Fianlimab&Cemiplimab as TotalNeoadj The (TNT) ForMelanoma

for Melanoma (Skin)

Drug: Cemiplimab

1 location in Orange

Sponsor: University of California, Irvine

Sex: All·Age: All ages

Code: NCT07527325·Phase 2·Not Yet Recruiting

Methadone for Enhanced Postoperative Analgesia in Intermediate-Risk Noncardiac Surgery (MELODY)

for Postoperative Pain

1 location in Irvine

Sponsor: Alexandre P. Joosten

Sex: All·Age: 18+

Code: NCT07565870·Phase 3·Not Yet Recruiting

A Prospective Registry Study of Patients With Hypertension

for Hypertension (HTN)

2 locations incl. Palo Alto

Sponsor: Vivek Bhalla

Sex: All·Age: 18+

Code: NCT07579260·Not Yet Recruiting

Incorporating Narrative Into the Treatment of Youth With Anorexia Nervosa (Virtual)

for Anorexia Nervosa

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 16 - 25

Code: NCT07579442·Recruiting

Apply to this trial

Short-term Effects of Methamphetamine on Residual Latent HIV Disease Study

for HIV -1 Infection

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18 - 65

Code: NCT07584369·Phase 4·Not Yet Recruiting

Suzetrigine for Opioid-Sparing Postoperative Analgesia Following Transvaginal Pelvic Reconstructive Surgery

for Pelvic Organ Prolapse (POP)

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: Female·Age: 18+

Code: NCT07600697·Phase 4·Not Yet Recruiting

Clinical Validation of AI-Based Quantitative Eye Movement Analysis From Smartphone 9-Gaze Videos (Glandy EOM)

for Ocular Motility Disorders

1 location in San Jose

Sponsor: THYROSCOPE INC.

Sex: All·Age: 22+

Code: NCT07623837·Not Yet Recruiting

Prospective Observational Study of Smartphone-Based AI Self-Monitoring During Non-Surgical Treatment for Thyroid Eye Disease (THYROSCOPE)

for Thyroid Eye Disease (TED)

1 location in San Jose

Sponsor: THYROSCOPE INC.

Sex: All·Age: 22+

Code: NCT07623993·Not Yet Recruiting

Patient Navigation for Improving Transition Success Among Multiply Disadvantaged Young Adult Survivors of Childhood Cancer

for Cancer Childhood

1 location in Los Angeles

Sponsor: Children's Hospital Los Angeles

Sex: All·Age: 20 - 29

Code: NCT07630831·Not Yet Recruiting

kTMP-Enhanced Motor Rehabilitation for Chronic Stroke Recovery (KULMINATE) Pilot

for Stroke

1 location in Berkeley

Sponsor: Magnetic Tides

Sex: All·Age: 18 - 80

Code: NCT07631078·Recruiting

Apply to this trial

Fluoroscopy Radiation Reduction During Sacral Neuromodulation Lead Placement

for Radiation Exposure

1 location in Loma Linda

Sponsor: Loma Linda University

Sex: All·Age: 18 - 89

Code: NCT04527445·Recruiting

Apply to this trial

Study of a 1-Millimeter Resolution Clinical Positron Emission Tomography (PET) System in Head and Neck Cancer Imaging

for Head and Neck Cancer

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 19+

Code: NCT04662554·Not Yet Recruiting

89Zr-Panitumumab for Assessment of Suspected Metastatic Lesions on 18F-FDG-PET/CT in HNSCC

for Head-and-neck Squamous Cell Carcinoma

1 location in San Francisco

Sponsor: Stanford University

Sex: All·Age: 19+

Code: NCT05423197·Phase 2·Not Yet Recruiting

A Randomized Trial of Bicalutamide in Non-Muscle Invasive Bladder Cancer

for Non-Muscle Invasive Bladder Urothelial Carcinoma

6 locations incl. Tucson

Sponsor: University of Wisconsin, Madison

Sex: Male·Age: 18+

Code: NCT05521698·Phase 1·Recruiting

Apply to this trial

Photobiomodulation for Cancer-Related Cognitive Impairment

for Cancer-related Cognitive Impairment

1 location in Los Angeles

Sponsor: Arash Asher, MD

Sex: All·Age: 18+

Code: NCT05855694·Not Yet Recruiting