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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BIO-SEE: Bioburden Imaging Outcome Study for Equivalence Evaluation

for DFU

5 locations incl. San Diego

Sponsor: Capsicure, LLC

Sex: All·Age: 22+·Accepts healthy volunteers

Code: NCT07611318·Enrolling By Invitation

Temple Massager System Study in Women Ages 35-65

for Tension Headaches

1 location in Fairfax

Sponsor: MOQ Collective, Ltd

Sex: Female·Age: 35 - 65·Accepts healthy volunteers

Code: NCT07639658·Not Yet Recruiting

A Research Study Comparing Different Ways of Increasing the Dose of NNC0662-0419 in Participants With Obesity

for Obesity

Drug: NNC0662-0419

24 locations incl. Montgomery

Sponsor: Novo Nordisk A/S

Sex: All·Age: 18+

Code: NCT07639021·Phase 2·Not Yet Recruiting

Ivonescimab Prior to Surgery for the Treatment of High-Risk Localized Clear Cell Renal Cell Cancer

for Localized Clear Cell Renal Cell Carcinoma

Drug: Ivonescimab

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT07226544·Phase 2·Recruiting

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Pivotal Open-label Phase 3 Clinical Study of QTX-2101 in Adult Patients With Acute Promyelocytic Leukemia

for Acute Promyelocytic Leukemia (APL)

6 locations incl. Duarte

Sponsor: Quetzal Therapeutics

Sex: All·Age: 18 - 71

Code: NCT07504458·Phase 3·Recruiting

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Calming Minds Study

for Anxiety

1 location in Imperial

Sponsor: University of California, Los Angeles

Sex: All·Age: 18+

Code: NCT07577401·Not Yet Recruiting

Duvelisib Maintenance for the Treatment of Peripheral T-Cell Lymphomas

for Follicular Helper T-Cell Lymphoma

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT07293403·Phase 2·Recruiting

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ARX788 for Treating Patients With HER2-low Locally Advanced Unresectable or Metastatic Breast Cancer

for HER2 Low Breast Carcinoma

1 location in San Francisco

Sponsor: Laura Huppert, MD, BA

Sex: All·Age: 18+

Code: NCT06224673·Phase 2·Recruiting

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RAD ONC FREEDOM Oncology Pain

for Cancer Pain

1 location in Los Angeles

Sponsor: Jonsson Comprehensive Cancer Center

Sex: All·Age: 18+

Code: NCT07605546·Not Yet Recruiting

GBPDC: Gut-Brain in PD Consortium Master Protocol

for Parkinson Disease (PD)

7 locations incl. Stanford

Sponsor: Duke University

Sex: All·Age: 21 - 80·Accepts healthy volunteers

Code: NCT07567794·Not Yet Recruiting

Hyperpolarized Carbon Metabolic Imaging in Multiple Sclerosis

for Multiple Sclerosis

1 location in San Francisco

Sponsor: Ari Green

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

Code: NCT07510607·Phase 2·Recruiting

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Health-E You Efficacy Trial for Male Adolescents

for Sexually Transmitted Diseases

8 locations incl. Oakland

Sponsor: Johns Hopkins University

Sex: Male·Age: 13 - 21·Accepts healthy volunteers

Code: NCT06525064·Recruiting

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An Efficacy and Safety Study of Cenegermin Ophthalmic Solution Compared With Vehicle in the Treatment of PCED

for Persistent Corneal Epithelial Defect

18 locations incl. Huntington Beach

Sponsor: Dompé Farmaceutici S.p.A

Sex: All·Age: 18+

Code: NCT07519902·Phase 3·Recruiting

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Evaluation of the Efficacy, Safety, and Tolerability of LevoCept

for Contraception

27 locations incl. Berkeley

Sponsor: Sebela Women's Health Inc.

Sex: Female·Age: Up to 45·Accepts healthy volunteers

Code: NCT04457076·Phase 3·Not Yet Recruiting

Milk Volume Outcomes Following Oral Nicotinamide Riboside Supplementation in Mothers of Extremely Preterm Infants

for Preterm Birth

1 location in Sacramento

Sponsor: University of California, Davis

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

Code: NCT04614714·Phase 2, Phase 3·Not Yet Recruiting

Light and Sleep Fragmentation

for Sleep

1 location in Redwood City

Sponsor: Stanford University

Sex: All·Age: 65 - 99·Accepts healthy volunteers

Code: NCT06009289·Phase 4·Not Yet Recruiting

The Role of Amnion Membrane Allografts in Nipple Preservation

for Mastectomy

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 15 - 75·Accepts healthy volunteers

Code: NCT06073808·Not Yet Recruiting

Reducing Adult Inpatients Anxiety With Virtual Reality Meditation

for Anxiety

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 18 - 99

Code: NCT06234254·Not Yet Recruiting

Sensory Synchronized Imaging and Neuromodulation

for Major Depressive Disorder

1 location in Palo Alto

Sponsor: VA Office of Research and Development

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

Code: NCT06548113·Not Yet Recruiting

Pacritinib in Combination With a BTK Inhibitor for the Treatment of Patients With Relapsed or Refractory Mantle Cell Lymphoma

for Recurrent Mantle Cell Lymphoma

Drug: Pacritinib

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT06675123·Phase 1·Recruiting

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A Study to Evaluate Safety, Tolerability and Efficacy of AP306 at Fixed Doses in Dialysis Participants With Hyperphosphatemia

for Hyperphosphatemia

19 locations incl. Huntsville

Sponsor: R1 Therapeutics

Sex: All·Age: 18+

Code: NCT06712654·Phase 2·Recruiting

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The Effects of Orexin Antagonism on Fear Extinction in PTSD

for Insomnia

2 locations incl. San Francisco

Sponsor: VA Office of Research and Development

Sex: All·Age: 18 - 75

Code: NCT06788522·Phase 4·Not Yet Recruiting

Early Re-Initiation of Semaglutide Post Sleeve Gastrectomy in Youth

for Pediatric Obesity

Drug: Semaglutide

1 location in Los Angeles

Sponsor: Children's Hospital Los Angeles

Sex: All·Age: 12 - 18

Code: NCT06934655·Phase 3·Not Yet Recruiting

Healing Hearts of Hospitalized Patients

for Well-Being, Psychological

1 location in Palo Alto

Sponsor: Stanford University

Sex: All·Age: 18 - 99

Code: NCT06935604·Not Yet Recruiting

CASCADE 2002: PROTECT Study, "PRObiotics to TrEat Anal preCancer Trial

for HSIL, High Grade Squamous Intraepithelial Lesion

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: All·Age: 21+

Code: NCT06949800·Phase 2·Not Yet Recruiting

The Effectiveness of Patch-Based Screening for Pre-Symptomatic Atrial Fibrillation to Improve Patient Outcome

for Atrial Fibrillation

1 location in Palo Alto

Sponsor: VA Office of Research and Development

Sex: All·Age: 65+·Accepts healthy volunteers

Code: NCT06953778·Not Yet Recruiting

Be Well at Work-Plus: A Depression and Physical Activity Intervention for Hospital Service Workers (Aim 3)

for Depression

1 location in San Diego

Sponsor: San Diego State University

Sex: All·Age: 18+

Code: NCT07010133·Not Yet Recruiting

Biomarker-Guided Ruxolitinib for the Prevention of Chronic Graft Versus Host Disease After Allogeneic Hematopoietic Cell Transplantation

for Hematopoietic and Lymphatic System Neoplasm

Drug: Ruxolitinib

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18+

Code: NCT07025538·Phase 1·Recruiting

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A RCT of Spectacles With Aspherical Lenslets or 0.05% Atropine for Myopia Control

for Myopia

12 locations incl. Birmingham

Sponsor: Jaeb Center for Health Research

Sex: All·Age: 5 - 11

Code: NCT07095894·Phase 3·Recruiting

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Recombinant Erwinia Asparaginase and Venetoclax in Combination With Blinatumomab for the Treatment of Relapsed or Refractory CD19 Positive B-cell Acute Lymphoblastic Leukemia

for Recurrent B Acute Lymphoblastic Leukemia

Drug: Venetoclax

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 12 - 55

Code: NCT07133997·Phase 1·Recruiting

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Oral Cryotherapy to Decrease Taste Changes in Prostate Cancer Patients Receiving Taxane Chemotherapy

for Prostate Carcinoma

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: Male·Age: 18+

Code: NCT07218718·Recruiting

Apply to this trial

CLF065 for Chronic Pouchitis

for Pouchitis

3 locations incl. La Jolla

Sponsor: Calibr, a division of Scripps Research

Sex: All·Age: 18 - 80

Code: NCT07226050·Phase 2·Recruiting

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Supporting Families in the ICU

for Anxiety

2 locations incl. San Francisco

Sponsor: Indiana University

Sex: All·Age: 18+

Code: NCT07228299·Not Yet Recruiting

Kinetic Analysis of Immune Cells in Blood and Chronic Graft-Versus-Host Disease-Affected Tissues After Allogeneic Hematopoietic Cell Transplantation

for Graft Versus Host Disease

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 7+

Code: NCT07235501·Not Yet Recruiting

PREcision MEDicine In Achalasia (PREMEDIA) - Cohort

for Type III Achalasia

13 locations incl. Scottsdale

Sponsor: Northwestern University

Sex: All·Age: 18+

Code: NCT07293689·Recruiting

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Dopamine vs. Norepinephrine for Hypotension in Neonates With Pulmonary Hypertension (DONE)

for Hypotension and Shock

1 location in Sacramento

Sponsor: University of California, Davis

Sex: All·Age: Up to 28 Days

Code: NCT07322133·Phase 4·Recruiting

Apply to this trial

CHEER Oral Health in Pregnancy Study

for Gingivitis

1 location in San Francisco

Sponsor: University of California, San Francisco

Sex: Female·Age: 18+

Code: NCT07377344·Not Yet Recruiting

Efficacy and Safety of Topical Timolol in Secondary Intention Surgical Wounds Healing

for Mohs Micrographic Surgery

2 locations incl. Sacramento

Sponsor: University of California, Davis

Sex: All·Age: 18+

Code: NCT07384767·Phase 2·Not Yet Recruiting

A Study of Psychedelics in Healthy Older Adults With Low Well-being

for Anhedonia in Healthy Volunteers

1 location in San Francisco

Sponsor: Jennifer Mitchell

Sex: All·Age: 50 - 85·Accepts healthy volunteers

Code: NCT07386730·Phase 1·Recruiting

Apply to this trial

Autologous CD6-CAR Treg Cells for Patients With Stage 3 Type 1 Diabetes

for Stage 3 Type 1 Diabetes

1 location in Duarte

Sponsor: City of Hope Medical Center

Sex: All·Age: 18 - 35

Code: NCT07395050·EARLY_Phase 1·Not Yet Recruiting