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

Evaluation of DNA Methylation Signatures for the Diagnosis and Management of Thyroid Nodules

for Thyroid Gland Carcinoma

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT05229341·Recruiting·Listed Feb 2022

Apply to this trial

Genetically Modified T-cells (CMV-Specific CD19-CAR T-cells) Plus a Vaccine (CMV-MVA Triplex) Following Stem Cell Transplantation for the Treatment of Intermediate or High Grade B-cell Non-Hodgkin Lymphoma

for B-Cell Non-Hodgkin Lymphoma

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT05432635·Phase 1·Recruiting·Listed Jun 2022

Apply to this trial

Lateral Pharyngoplasty Outcomes in Children Undergoing Tonsillectomy

for Sleep-Disordered Breathing

Sites in Riverside, Murrieta & San Bernardino

Sponsor: Loma Linda University

Sex: All·Age: 3 - 17

Code: NCT05575401·Recruiting·Listed Oct 2022

Apply to this trial

A Phase II Nationwide, Fully Decentralized, Telemedicine Study of Pemigatinib in Adult Patients With Advanced or Metastatic Pancreatic Cancer With FGFR Genetic Alterations

for Advanced Pancreatic Carcinoma

Sites in Los Angeles, San Francisco +107 more locations

Sponsor: Sameek Roychowdhury

Sex: All·Age: 18+

Code: NCT06906562·Phase 2·Recruiting·Listed Apr 2025

Apply to this trial

Sleep and Light Intervention (SALI) for Menopausal Mood Dysfunction

for Depression

1 location in San Diego

Sponsor: University of California, San Diego

Sex: Female·Age: 18+

Code: NCT06678880·Recruiting·Listed Nov 2024

Apply to this trial

Adaptive Interventions for Emergency Department Patients With Opioid Use Disorder

for Opioid Use Disorder

1 location in Colton

Sponsor: RAND

Sex: All·Age: 18+

Code: NCT06827288·Recruiting·Listed Feb 2025

Apply to this trial

Testing an Evidence-Based Supported Employment Model in Autistic Young Adults

for Autism Spectrum Disorder

2 locations in Sacramento

Sponsor: University of California, Davis

Sex: All·Age: 18 - 40

Code: NCT06829264·Recruiting·Listed Feb 2025

Apply to this trial

Mirai-MRI: Validation of AI Models for Breast Cancer Risk

for Cancer Risk

Sites in San Francisco, San Diego +2 more locations

Sponsor: University of California, San Francisco

Sex: Female·Age: 40 - 89·Accepts healthy volunteers

Code: NCT07121972·Recruiting·Listed Aug 2025

Apply to this trial

Zinc and Iron Absorption From Common Beans in Young Adult Women

for Zinc Absorption

1 location in Davis

Sponsor: University of California, Davis

Sex: Female·Age: 19 - 24·Accepts healthy volunteers

Code: NCT06327529·Recruiting·Listed Mar 2024

Apply to this trial

Alternation in the Human Microbiome With Commonly Used Topical Medications

for Healthy

1 location in Sacramento

Sponsor: University of California, Davis

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

Code: NCT03437005·Phase 1·Recruiting·Listed Feb 2018

Apply to this trial

Stem Cell Transplantation in Crohn's Disease

for Crohn Disease

1 location in Los Angeles

Sponsor: Cedars-Sinai Medical Center

Sex: All·Age: 13 - 28

Code: NCT04224558·Phase 1, Phase 2·Recruiting·Listed Jan 2020

Apply to this trial

Virtual Reality for GI Cancer Pain to Improve Patient Reported Outcomes

for Cancer Pain

1 location in Los Angeles

Sponsor: Cedars-Sinai Medical Center

Sex: All·Age: 18 - 99

Code: NCT04907643·Recruiting·Listed Jun 2021

Apply to this trial

Aesthetic Outcome of Intra-dermal Versus Transcutaneous Purse-string Closure

for Scarring

1 location in Sacramento

Sponsor: University of California, Davis

Sex: All·Age: 18+

Code: NCT06448481·Recruiting·Listed Jun 2024

Apply to this trial

Pacritinib in Relapsed/Refractory T-cell Lymphoproliferative Neoplasms

for T-Cell Neoplasm

Drug: Pacritinib

Sites in Duarte +5 more locations

Sponsor: University of Michigan Rogel Cancer Center

Sex: All·Age: 18+

Code: NCT04858256·Phase 2·Recruiting·Listed Apr 2021

Apply to this trial

The ROAR Study: Reactive Oxygen Species and Reproduction

for Ovarian Aging

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18 - 43·Accepts healthy volunteers

Code: NCT06831019·Recruiting·Listed Feb 2025

Apply to this trial

Anastrazole, Fulvestrant & Abemaciclib for HR+HER2- Metastatic Breast Cancer

for Breast Cancer

1 location in Orange

Sponsor: University of California, Irvine

Sex: All·Age: 18+

Code: NCT05524584·Phase 2·Recruiting·Listed Sep 2022

Apply to this trial

Vaginal Changes After CO2 Laser

for Genitourinary Syndrome of Menopause

1 location in Irvine

Sponsor: University of California, Irvine

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

Code: NCT06691178·Recruiting·Listed Nov 2024

Apply to this trial

Depleted Donor Stem Cell Transplant in Children and Adults With Fanconi Anemia After Being Conditioned With a Regimen Containing Briquilimab

for Fanconi Anemia

1 location in Stanford

Sponsor: Porteus, Matthew, MD

Sex: All·Age: 2+

Code: NCT04784052·Phase 1, Phase 2·Recruiting·Listed Mar 2021

Apply to this trial

Enfortumab Vedotin and Pembrolizumab Combined With Radiotherapy in Muscle Invasive Bladder Cancer

for Bladder Cancer

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18+

Code: NCT06470282·Phase 1, Phase 2·Recruiting·Listed Jun 2024

Apply to this trial

Chardonnay Marc and Vascular Response

for Cardiovascular Diseases

1 location in Davis

Sponsor: University of California, Davis

Sex: Male·Age: 30 - 50·Accepts healthy volunteers

Code: NCT05545865·Recruiting·Listed Sep 2022

Apply to this trial

An Investigational Scan (Flotufolastat F 18 PET/CT) for Detecting Residual or Recurrent Disease in Patients Who Completed Focal Therapy for Prostate Cancer.

for Prostate Carcinoma

1 location in Los Angeles

Sponsor: Jonsson Comprehensive Cancer Center

Sex: Male·Age: 18 - 90

Code: NCT07185165·Phase 2·Recruiting·Listed Sep 2025

Apply to this trial

The Effect of Intraoral Transcutaneous Electrical Nerve Stimulation in Orthodontics Pain

for Orthodontic Appliance

1 location in San Francisco

Sponsor: University of the Pacific

Sex: All·Age: 12+·Accepts healthy volunteers

Code: NCT06573996·Recruiting·Listed Aug 2024

Apply to this trial

Fiber and Calcium Absorption in Older Men

for Aging

1 location in San Francisco

Sponsor: VA Office of Research and Development

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

Code: NCT06519877·Phase 2·Recruiting·Listed Jul 2024

Apply to this trial

A Study of Codrituzumab in Children and Young Adults With Solid Tumors and Have Not Responded to Treatment or Have Come Back After Treatment

for Primary Extra-cranial Solid Tumor

Sites in Los Angeles +4 more locations

Sponsor: Memorial Sloan Kettering Cancer Center

Sex: All·Age: 1 - 21

Code: NCT04928677·Phase 1·Recruiting·Listed Jun 2021

Apply to this trial

Avoid and Resist Strategies for Weight Management

for Obesity

1 location in Los Angeles

Sponsor: Cedars-Sinai Medical Center

Sex: All·Age: 14+·Accepts healthy volunteers

Code: NCT05143931·Recruiting·Listed Dec 2021

Apply to this trial

The SolanoConnex Trial: Evaluation of a Mental Health Access Project

for Mental Health

1 location in Vallejo

Sponsor: Touro University, California

Sex: All·Age: 18+

Code: NCT07306013·Recruiting·Listed Dec 2025

Apply to this trial

Observational Study of Pediatric Rheumatic Diseases: The CARRA Registry

for Rheumatic Joint Disease

Sites in Los Angeles, San Francisco +66 more locations

Sponsor: Duke University

Sex: All·Age: Up to 21

Code: NCT02418442·Recruiting·Listed Apr 2015

Apply to this trial

Biomarker Exploration in Aging, Cognition and Neurodegeneration

for Alzheimer Disease

1 location in Irvine

Sponsor: University of California, Irvine

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

Code: NCT03860857·Phase 3·Recruiting·Listed Mar 2019

Apply to this trial

Caloric Vestibular Stimulation for Modulation of Insight in Obsessive-Compulsive Spectrum Disorders

for Obsessive-Compulsive Disorder

1 location in Stanford

Sponsor: Stanford University

Sex: All·Age: 18 - 65

Code: NCT03918577·Recruiting·Listed Apr 2019

Apply to this trial

Quantitative Ultrasound to Assess Steatotic Liver Disease in Children

for MASLD

1 location in La Jolla

Sponsor: University of California, San Diego

Sex: All·Age: 9 - 18

Code: NCT06706856·Recruiting·Listed Nov 2024

Apply to this trial

Pulsed Electromagnetic Field (PEMF) Therapy for Post-operative Pain Following Orthopedic Surgery

for Knee Injuries

1 location in Redwood City

Sponsor: Stanford University

Sex: All·Age: 18+

Code: NCT04109638·Recruiting·Listed Sep 2019

Apply to this trial

Randomized Phase IIB Trial of Oral Azacytidine Plus Romidepsin Versus Investigator's Choice in PTCL

for PTCL

Sites in Long Beach +5 more locations

Sponsor: University of Virginia

Sex: All·Age: 18+

Code: NCT04747236·Phase 2·Recruiting·Listed Feb 2021

Apply to this trial

Impact of Prebiotics in Ulcerative Colitis

for Crohn Disease

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 18 - 85

Code: NCT06495658·Recruiting·Listed Jul 2024

Apply to this trial

Optimizing Care for Older Adults Through Thyroid Hormone Deprescribing

for Hypothyroidism

Sites in San Francisco +2 more locations

Sponsor: University of Michigan

Sex: All·Age: 65+

Code: NCT06629272·Recruiting·Listed Oct 2024

Apply to this trial

An Integrated Intervention Using a Pill Ingestible Sensor System

for HIV/AIDS

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 18+

Code: NCT06480578·Phase 2·Recruiting·Listed Jun 2024

Apply to this trial

Phenotyping Response to Spinal Cord Stimulation in Chronic Low Back Pain

for Chronic Low Back Pain

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 18 - 80

Code: NCT06310226·Recruiting·Listed Mar 2024

Apply to this trial

Improving Bladder Function in SCI by Neuromodulation

for Spinal Cord Injury

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: Male·Age: 18 - 45

Code: NCT02331979·Recruiting·Listed Jan 2015

Apply to this trial

Autologous Gene Therapy for Artemis-Deficient SCID

for Severe Combined Immunodeficiency

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 2 Months+

Code: NCT03538899·Phase 1, Phase 2·Recruiting·Listed May 2018

Apply to this trial

Adding Urea to the Final Dialysis Fluid

for Dysequilibrium Syndrome

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18+

Code: NCT06366230·Phase 1, Phase 2·Recruiting·Listed Apr 2024

Apply to this trial

Secretin in Refeeding

for Anorexia in Adolescence

1 location in Los Angeles

Sponsor: University of California, Los Angeles

Sex: All·Age: 13 - 24

Code: NCT05235867·Recruiting·Listed Feb 2022

Apply to this trial