Paid Clinical Trials in California

California has 6,520 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 19, 2026.

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6,520 clinical trials

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Acceptance and Commitment Therapy for Adolescents and Young Adults With Sickle Cell Disease

for Race-related Stress

1 location in Los Angeles

Sponsor: Children's Hospital Los Angeles

Sex: All·Age: 14 - 21

Code: NCT05685368·Phase 1, Phase 2·Recruiting

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Tolerability of MDMA in Schizophrenia

for Schizophrenia

1 location in Los Angeles

Sponsor: Anya Bershad, MD, PhD

Sex: All·Age: 18 - 60

Code: NCT05770375·Phase 1, Phase 2·Recruiting

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Autologous Bone Marrow Aspirate Treatment for Early-Stage Osteonecrosis

for Osteonecrosis of the Femoral Head

10 locations incl. Los Angeles

Sponsor: Johns Hopkins University

Sex: All·Age: 18 - 90

Code: NCT06123481·Recruiting

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Effectiveness of Cognitive Training in Older and Younger Adults

for Cognitive Change

3 locations incl. Riverside

Sponsor: University of Wisconsin, Madison

Sex: All·Age: 18 - 85·Accepts healthy volunteers

Code: NCT06375681·Recruiting

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Repletion of Ergothioneine in Patients With Kidney Failure

for Esrd

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 18+

Code: NCT06487546·Recruiting

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Immunotherapy After Surgery for People Who Have No Remaining Cancer Cells After Standard Treatment for Early-Stage Non-Small Cell Lung Cancer, INSIGHT Trial

for Lung Non-Small Cell Carcinoma

245 locations incl. Jonesboro

Sponsor: National Cancer Institute (NCI)

Sex: All·Age: 18+

Code: NCT06498635·Phase 3·Recruiting

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A Study of CHS-114 (Tagmokitug) in Combination With Toripalimab and/or Other Treatments in Participants With Advanced Solid Tumors

for Metastatic Solid Tumor

20 locations incl. Tucson

Sponsor: Coherus Oncology, Inc.

Sex: All·Age: 18+

Code: NCT06657144·Phase 1·Recruiting

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A Trial to Improve Family Clinical Note Access and Outcomes for Hospitalized Children

for Hospitalized Child

3 locations incl. Los Angeles

Sponsor: University of Wisconsin, Madison

Sex: All·Age: 18+

Code: NCT06722378·Recruiting

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IL1 Inhibition in FOP

for Fibrodysplasia Ossificans Progressiva (FOP)

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 6 - 30

Code: NCT06724562·Recruiting

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ExCrossV Multi Site Trial for Vascularized High Risk Keratoplasty

for Corneal Transplant Failure

12 locations incl. Irvine

Sponsor: Massachusetts Eye and Ear Infirmary

Sex: All·Age: 18+

Code: NCT06753916·Phase 2·Recruiting

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The Choice of Vasopressor to Prevent Postoperative Acute Kidney Injury After Major Non-Cardiac Surgery

for Anesthesia

9 locations incl. San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 18+

Code: NCT06802224·Phase 4·Recruiting

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GLYLO Supplement Pilot Trial on Glycation and Aging in Postmenopausal Women

for Postmenopause

1 location in Novato

Sponsor: Buck Institute for Research on Aging

Sex: Female·Age: 45 - 65

Code: NCT06813261·Recruiting

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Behavioral Treatment of Insomnia in Active-Duty Service Members With Traumatic Brain Injury

for Insomnia

1 location in San Diego

Sponsor: Noctem, LLC

Sex: All·Age: 18+

Code: NCT06867666·Recruiting

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Maintenance rTMS for Depression (Maitr-De)

for Major Depressive Disorder

2 locations incl. San Diego

Sponsor: University of California, San Diego

Sex: All·Age: 18 - 80

Code: NCT06938841·Recruiting

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Health eHeart BioBank

for Heart Diseases

1 location in San Francisco

Sponsor: University of California, San Francisco

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

Code: NCT06976502·Enrolling By Invitation

Understanding of Participation Trends Within Generalized Anxiety Disorder Patients Involved in Clinical Trials

for Generalized Anxiety Disorder

1 location in San Francisco

Sponsor: Power Life Sciences Inc.

Sex: All·Age: 18+

Code: NCT06254157·Not Yet Recruiting

Delving Into Participation Trends of Scleroderma Clinical Trials

for Scleroderma

1 location in San Francisco

Sponsor: Power Life Sciences Inc.

Sex: All·Age: 18+

Code: NCT06264492·Not Yet Recruiting

Investigative Analysis of Soft Tissue Sarcoma Clinical Trials: An Observational Study

for Soft Tissue Sarcoma

1 location in San Francisco

Sponsor: Power Life Sciences Inc.

Sex: All·Age: 18+

Code: NCT06264505·Not Yet Recruiting

An Observational Exploration of Clinical Trials Targeting Traumatic Brain Injury

for Traumatic Brain Injury

1 location in San Francisco

Sponsor: Power Life Sciences Inc.

Sex: All·Age: 18+

Code: NCT06264518·Not Yet Recruiting

Understanding Patient Engagement Trends in TBI Clinical Research

for TBI

1 location in San Francisco

Sponsor: Power Life Sciences Inc.

Sex: All·Age: 18+

Code: NCT06288698·Not Yet Recruiting

Assessing Patient Engagement in Keratoconus Clinical Research

for Keratoconus

1 location in San Francisco

Sponsor: Power Life Sciences Inc.

Sex: All·Age: 18+

Code: NCT06288737·Not Yet Recruiting

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

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A Phase 1 Dose Escalation Study of ZG006 in Patients With Small Cell Lung Cancer

for Small Cell Lung Cancer

6 locations incl. Orange

Sponsor: Suzhou Zelgen Biopharmaceuticals Co.,Ltd

Sex: All·Age: 18 - 75

Code: NCT06592638·Phase 1·Recruiting

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A Study of PHST001 in Advanced Solid Tumors

for Advanced Solid Tumors

20 locations incl. Beverly Hills

Sponsor: Pheast Therapeutics

Sex: All·Age: 18+

Code: NCT06840886·Phase 1·Recruiting

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Time Restricted Eating in Patients With Microalbuminuria

for Type 2 Diabetes Mellitus (T2DM)

1 location in La Jolla

Sponsor: University of California, San Diego

Sex: All·Age: 18 - 75

Code: NCT06884059·Phase 1·Not Yet Recruiting

A Study to Assess the Safety, Tolerability, and Efficacy of NDI-219216 in Patients With Advanced Solid Tumors.

for Advanced Solid Tumors Cancer

11 locations incl. Los Angeles

Sponsor: Nimbus Wadjet, Inc.

Sex: All·Age: 18 - 99

Code: NCT06898450·Phase 1, Phase 2·Recruiting

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NBI-1065845-MDD3025: Study to Assess the Efficacy and Safety of NBI-1065845 as an Adjunctive Treatment in Participants With Major Depressive Disorder (MDD)

for Major Depressive Disorder

Drug: NBI-1065845

10 locations incl. Huntsville

Sponsor: Neurocrine Biosciences

Sex: All·Age: 18+

Code: NCT06911112·Phase 3·Recruiting

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The Effect and Safety of Anti-inflammatories and Dextrose Prolotherapy Injections in Treating Knee Osteoarthritis

for Knee Osteoarthritis (OA)

1 location in Travis AFB

Sponsor: David Grant U.S. Air Force Medical Center

Sex: All·Age: 45 - 75

Code: NCT06911359·Phase 2·Recruiting

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BBO-11818 in Adult Subjects With KRAS Mutant Cancer

for Non-Small Cell Lung Cancer

16 locations incl. Los Angeles

Sponsor: TheRas, Inc., d/b/a BBOT (BridgeBio Oncology Therapeutics)

Sex: All·Age: 18+

Code: NCT06917079·Phase 1·Recruiting

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Safety and Effectiveness of ELLANSÉ®-S Dermal Filler in the Treatment of Nasolabial Folds

for Nasolabial Folds

7 locations incl. Scottsdale

Sponsor: AQTIS Medical B.V.

Sex: All·Age: 22+

Code: NCT06984835·Recruiting

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Real-World Patient Experiences Using Continuous Subcutaneous Apomorphine Infusion (ONAPGOTM) in the United States:

for Parkinson Disease

5 locations incl. Aliso Viejo

Sponsor: Supernus Pharmaceuticals, Inc.

Sex: All·Age: 18+

Code: NCT07219927·Recruiting

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Inflammatory Challenge and Fear

for Posttraumatic Stress Disorder (PTSD)

1 location in San Francisco

Sponsor: University of California, San Francisco

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

Code: NCT06630884·Phase 1·Recruiting

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Impact of COL7A1 Gene Therapy on SCC Recurrence in RDEB Skin

for Squamous Cell Carcinoma

1 location in Redwood City

Sponsor: Stanford University

Sex: All·Age: 18+

Code: NCT06731933·Phase 2·Recruiting

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Randomised Clinical Trial to Investigate Efficacy and Safety of Benralizumab 30 mg SC as an add-on Therapy in Uncontrolled Eosinophilic Asthma Patients Treated With Medium-dose ICS-LABA Compared to Conventional Escalation to High-dose ICS-LABA Treatment

for Eosinophilic Asthma

34 locations incl. Chandler

Sponsor: AstraZeneca

Sex: All·Age: 12 - 75

Code: NCT06750289·Phase 3·Recruiting

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A Phase 2 Study of PTX 100 in Patients With Relapsed/Refractory CTCL

for CTCL

6 locations incl. Duarte

Sponsor: Prescient Therapeutics, Ltd.

Sex: All·Age: 18+

Code: NCT06854653·Phase 2·Recruiting

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A Study to Test Different Doses of BI 765049 in People With Advanced Cancer of the Colon, Rectum, Stomach, or Pancreas

for Colorectal Carcinoma

3 locations incl. Los Angeles

Sponsor: Boehringer Ingelheim

Sex: All·Age: 18+

Code: NCT06882746·Phase 1·Recruiting

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A Study of LY3457263 Compared With Placebo in Participants With Type 2 Diabetes on a Stable Dose of Semaglutide or Tirzepatide

for Type 2 Diabetes

Drug: Semaglutide

25 locations incl. Phoenix

Sponsor: Eli Lilly and Company

Sex: All·Age: 18 - 75

Code: NCT06897475·Phase 2·Recruiting

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MagDI U.S. Registry

for Anastomosis, Surgical

5 locations incl. Ventura

Sponsor: GT Metabolic Solutions, Inc.

Sex: All·Age: 22+

Code: NCT06928545·Recruiting

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The Pivotal Study of RapidPulseTM Aspiration System

for Acute Ischemic Stroke

18 locations incl. Torrance

Sponsor: RapidPulse, Inc

Sex: All·Age: 18 - 80

Code: NCT06029491·Recruiting

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A Study of Vedolizumab in Adults With Ulcerative Colitis or Crohn's Disease in the Community Setting

for Ulcerative Colitis

101 locations incl. Birmingham

Sponsor: Takeda

Sex: All·Age: 18 - 80

Code: NCT06581328·Phase 4·Recruiting

Apply to this trial