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 28, 2026.

Filter results

Filter results

State

City

Recruitment status

Phase

Study type

Intervention

Condition

Sex

Age

Healthy volunteers only

5,286 clinical trials

↓ Download CSV

High Potency Cannabis: Acute and Protracted Effects

for Abuse Cannabis

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 21 - 55·Accepts healthy volunteers

Code: NCT06859723·Phase 1·Recruiting·Listed Mar 2025

Apply to this trial

Carotenoids in the Skin and Immune Aging

for No Condition

1 location in Redwood City

Sponsor: Stanford University

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

Code: NCT07221643·Recruiting·Listed Oct 2025

Apply to this trial

Bio-Repository of High Risk Cohorts for the Early Detection of Pancreas Cancer

for Pancreatic Cyst

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 18+

Code: NCT03260842·Recruiting·Listed Aug 2017

Apply to this trial

Natural History Evaluation of Charcot Marie Tooth Disease (CMT) Types CMT1B, CMT2A, CMT4A, CMT4C, and Others

for Charcot Marie Tooth Disease

Sites in Los Angeles, Palo Alto +16 more locations

Sponsor: Michael Shy

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

Code: NCT01193075·Recruiting·Listed Sep 2010

Apply to this trial

Prediction of Neoadjuvant Chemotherapy Response in Pancreatic Cancer

for Pancreatic Ductal Adenocarcinoma

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT07226154·Recruiting·Listed Nov 2025

Apply to this trial

Parent Intervention for Psychiatrically-Hospitalized Youth

for Adolescent - Emotional Problem

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 12 - 85

Code: NCT04797455·Recruiting·Listed Mar 2021

Apply to this trial

Phase 3 Study of Toripalimab Alone or in Combination With Tifcemalimab as Consolidation Therapy in Patients With Limited-stage Small Cell Lung Cancer (LS-SCLC)

for Limited-stage Small Cell Lung Cancer (LS-SCLC)

Sites in Los Angeles, Davis +27 more locations

Sponsor: Shanghai Junshi Bioscience Co., Ltd.

Sex: All·Age: 18+

Code: NCT06095583·Phase 3·Recruiting·Listed Oct 2023

Apply to this trial

Demonstrating the Efficacy of a Spanish-Language Program for Latino Dementia Caregivers

for Caregiver Burden of People With Dementia

1 location in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 18 - 100·Accepts healthy volunteers

Code: NCT06747637·Recruiting·Listed Dec 2024

Apply to this trial

FAPI PET for Lung Fibrosis

for Interstitial Lung Disease

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 18+

Code: NCT05365802·EARLY_Phase 1·Recruiting·Listed May 2022

Apply to this trial

eMOTION: Examining Affective Mechanisms in Physical Activity Engagement

for Physical Inactivity

1 location in Los Angeles

Sponsor: University of Southern California

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

Code: NCT06570642·Recruiting·Listed Aug 2024

Apply to this trial

Feasibility of an In-home Standing and Walking Intervention for Infants With and at High Risk of Cerebral Palsy

for Cerebral Palsy

1 location in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 5 Months - 2

Code: NCT05781438·Recruiting·Listed Mar 2023

Apply to this trial

Impact of Sodium Bicarbonate on 24-hour Urine Parameters in Hypocitriuric and Uric Acid Stone Formers

for Uric Acid Stones

1 location in Orange

Sponsor: University of California, Irvine

Sex: All·Age: 18 - 80

Code: NCT06335537·Phase 1·Recruiting·Listed Mar 2024

Apply to this trial

Time Limited Eating in Adolescents With Type 2 Diabetes (KT2D)

for Pediatric Obesity

1 location in Los Angeles

Sponsor: Children's Hospital Los Angeles

Sex: All·Age: 12 - 21

Code: NCT04536480·Recruiting·Listed Sep 2020

Apply to this trial

The Patient and Family Centered I-PASS LISTEN Study: Language, Inclusion, Safety, and Teamwork for Equity Now

for Communication

Sites in Los Angeles, Oakland +6 more locations

Sponsor: Boston Children's Hospital

Sex: All·Age: All ages

Code: NCT05591066·Recruiting·Listed Oct 2022

Apply to this trial

Characterization of Familial Myopathy and Paget Disease of Bone

for Muscle Disorder

1 location in Irvine

Sponsor: University of California, Irvine

Sex: All·Age: 18+

Code: NCT01166854·Recruiting·Listed Jul 2010

Apply to this trial

Spatiotemporal Stereotactic Body Radiation Therapy for the Treatment of Patients With Polymetastatic Solid Tumors

for Metastatic Malignant Solid Neoplasm

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT05733949·Recruiting·Listed Feb 2023

Apply to this trial

The Family Perspectives Project Pilot Trial

for Respiratory Failure

1 location in Los Angeles

Sponsor: Matthew Modes

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

Code: NCT06039501·Recruiting·Listed Sep 2023

Apply to this trial

ColoCare Study - Colorectal Cancer Cohort

for Colorectal Cancer

Sites in Los Angeles +5 more locations

Sponsor: University of Utah

Sex: All·Age: 18 - 89

Code: NCT02328677·Recruiting·Listed Dec 2014

Apply to this trial

Evaluation of Neurocognitive Changes in Parkinson's Disease After Low Frequency Burst Stimulation

for Parkinson Disease

1 location in Los Angeles

Sponsor: University of Southern California

Sex: All·Age: 18+

Code: NCT05307055·Recruiting·Listed Apr 2022

Apply to this trial

Treat-to-Target of Endoscopic Remission in Patients With IBD in Symptomatic Remission

for Ulcerative Colitis

Sites in Los Angeles, Palo Alto +17 more locations

Sponsor: University of California, San Diego

Sex: All·Age: 18+

Code: NCT05230173·Recruiting·Listed Feb 2022

Apply to this trial

Dead Space and Inhaled Nitric Oxide in Pediatric Acute Respiratory Distress Syndrome

for Acute Respiratory Distress Syndrome

Sites in Los Angeles +8 more locations

Sponsor: Children's Hospital Los Angeles

Sex: All·Age: 0 - 21

Code: NCT06690801·Recruiting·Listed Nov 2024

Apply to this trial

Nerve Transfers Plus Electrical Stimulation to Improve Hand Function in Cervical Spinal Cord Injury

for Cervical Spinal Cord Injury

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 18 - 65

Code: NCT06541041·Recruiting·Listed Aug 2024

Apply to this trial

Real-Time Levodopa Level Monitoring in Parkinson Disease

for Parkinson Disease

1 location in San Diego

Sponsor: University of California, San Diego

Sex: All·Age: 40 - 85

Code: NCT04735627·Recruiting·Listed Feb 2021

Apply to this trial

Healthy Lifestyles for Bipolar Disorder

for Time Restricted Eating

1 location in Berkeley

Sponsor: University of California, Berkeley

Sex: All·Age: 18 - 65

Code: NCT06188754·Recruiting·Listed Jan 2024

Apply to this trial

Managing Transient Neurologic Episodes in Surgery for Moyamoya Disease

for Moya Moya Disease

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 3+

Code: NCT06880341·Recruiting·Listed Mar 2025

Apply to this trial

A Study to Prevent Infantile Spasms Relapse

for Infantile Spasms

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 2 Months - 18 Months

Code: NCT06819670·Phase 2·Recruiting·Listed Feb 2025

Apply to this trial

TRUEBEAM Stereotactic Body Radiotherapy for Localized Prostate Cancer

for Prostate Cancer

1 location in Laguna Hills

Sponsor: Linda Chan, MD

Sex: Male·Age: All ages

Code: NCT04552509·Recruiting·Listed Sep 2020

Apply to this trial

Natural History of Sphingosine Phosphate Lyase Insufficiency Syndrome (SPLIS)

for Sphingosine Phosphate Lyase Insufficiency Syndrome (SPLIS)

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: All ages

Code: NCT06669949·Recruiting·Listed Nov 2024

Apply to this trial

Commercial or Open Source Closed Loop Impact on Pregnancy Study

for Type 1 Diabetes

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: Female·Age: 18+

Code: NCT06654713·Recruiting·Listed Oct 2024

Apply to this trial

Aspirin for Postpartum Patients With Preeclampsia

for Preeclampsia Postpartum

1 location in Long Beach

Sponsor: MemorialCare Health System

Sex: Female·Age: 18+

Code: NCT05924971·Phase 2·Recruiting·Listed Jun 2023

Apply to this trial

PET Imaging of Radiolabeled Anti-HIV-1 Envelope Monoclonal Antibody (VRC01)

for HIV-1-infection

1 location in San Francisco

Sponsor: University of California, San Francisco

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

Code: NCT03729752·Phase 1·Recruiting·Listed Nov 2018

Apply to this trial

TBI Rehabilitation and Activation in Veterans

for Traumatic Brain Injury

Sites in San Francisco & Palo Alto

Sponsor: Northern California Institute of Research and Education

Sex: All·Age: 50 - 89

Code: NCT06562127·Recruiting·Listed Aug 2024

Apply to this trial

Combined STN and NBM Deep Brain Stimulation for Mild Cognitive Impairment in Parkinson's Disease

for Parkinson's Disease

1 location in Stanford

Sponsor: Helen M. Bronte-Stewart

Sex: All·Age: 21 - 80

Code: NCT05968703·Recruiting·Listed Aug 2023

Apply to this trial

Stem Cell Transplant From Donors After Alpha Beta Cell Depletion in Children and Young Adults

for Hematologic Diseases

1 location in Palo Alto

Sponsor: Alice Bertaina

Sex: All·Age: 1 Month - 60

Code: NCT04249830·Recruiting·Listed Jan 2020

Apply to this trial

Hyperbaric Oxygen Therapy for Optic Neuropathies

for Optic Neuropathy

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 18+

Code: NCT06128720·Recruiting·Listed Nov 2023

Apply to this trial

Sensory Motor Transformations in Human Cortex

for Quadriplegia

Sites in Los Angeles, Pasadena +2 more locations

Sponsor: Richard A. Andersen, PhD

Sex: All·Age: 22 - 65

Code: NCT01964261·Recruiting·Listed Oct 2013

Apply to this trial

CD4^LVFOXP3 in Participants With IPEX

for IPEX

1 location in Palo Alto

Sponsor: Bacchetta, Rosa, MD

Sex: Male·Age: 4 Months - 35

Code: NCT05241444·Phase 1·Recruiting·Listed Feb 2022

Apply to this trial

buRst-supprESsion TO Stop Refractory Status Epilepticus Post-cardiac Arrest

for Hypoxia-Ischemia, Brain

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18+

Code: NCT05851391·Phase 2·Recruiting·Listed May 2023

Apply to this trial

Reducing Blood Pressure in Patients With High Cardiovascular Risk

for Myocardial Infarction

Sites in Los Angeles, Torrance +2 more locations

Sponsor: University of Southern California

Sex: All·Age: 35+

Code: NCT05937685·Recruiting·Listed Jul 2023

Apply to this trial

Family, Responsibility, Education, Support, and Health for Food Responsiveness

for Obesity, Childhood

Sites in La Jolla +1 more location

Sponsor: University of California, San Diego

Sex: All·Age: 7 - 12·Accepts healthy volunteers

Code: NCT06207110·Recruiting·Listed Jan 2024

Apply to this trial