Data sourced from ClinicalTrials.gov (NIH registry) Updated weekly IRB-supervised studies only

Home/CA/Stockton

Updated August 2026 from ClinicalTrials.gov

Paid Clinical Trials in Stockton, CA

Studies commonly pay $75 to $4,500 per completed study

99 clinical trials are currently recruiting participants within 30 miles of Stockton. Listings below come straight from the official NIH registry, alongside the area's top-rated research centers with real Google reviews.

99studies recruiting

9+research centers nearby

6condition categories

Live from the NIH registry

Studies recruiting near Stockton right now

Top 25 of 99 recruiting studies, sorted by proximity — each links to its official registry page

Radiation Therapy With or Without Cisplatin in Treating Patients With Stage III-IVA Squamous Cell Carcinoma of the Head and Neck Who Have Undergone Surgery

Head and Neck Squamous Cell Carcinoma, Hypopharyngeal Squamous Cell Carcinoma Phase 2 Interventional 189 participants sought

Saint Joseph's Medical Center — Stockton, California (1.7 mi) · Sponsor: ECOG-ACRIN Cancer Research Group

See eligibility & contact on ClinicalTrials.gov (NCT02734537)

MYELOMATCH: A Screening Study to Assign People With Myeloid Cancer to a Treatment Study or Standard of Care Treatment Within myeloMATCH (MyeloMATCH Screening Trial)

Acute Myeloid Leukemia, Acute Myeloid Leukemia Arising From Previous Myelodysplastic/Myeloproliferative Neoplasm Phase 2 Interventional 2,000 participants sought

Kaiser Permanente- Modesto MOB II — Modesto, California (28.9 mi) · Sponsor: National Cancer Institute (NCI)

See eligibility & contact on ClinicalTrials.gov (NCT05564390)

Testing Higher Dose Radiation Therapy for Locally Advanced Pancreatic Cancer

Locally Advanced Unresectable Pancreatic Ductal Adenocarcinoma, Stage II Pancreatic Cancer AJCC v8 Phase 3 Interventional 356 participants sought

Memorial Medical Center — Modesto, California (28.9 mi) · Sponsor: NRG Oncology

See eligibility & contact on ClinicalTrials.gov (NCT06958328)

High-dose Prophylactic Gabapentin (HOPE) vs. Placebo to Prevent Opioid Use for Oral Mucositis Pain During Concurrent Chemoradiation for Head and Neck Cancer

Head and Neck Squamous Cell Carcinoma, Stage I Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8 Phase 3 Interventional 228 participants sought

Kaiser Permanente- Modesto MOB II — Modesto, California (28.9 mi) · Sponsor: Alliance for Clinical Trials in Oncology

See eligibility & contact on ClinicalTrials.gov (NCT06992427)

Symbiotic-Lung-01 : A Study to Learn About the Study Medicine Called PF-08634404 in Combination With Chemotherapy in Adult Participants With Locally Advanced or Metastatic Non-Small Cell Lung Cancer

Advanced Non-Small Cell Lung Cancer, Non-Small Cell Lung Cancer Phase 3 Interventional 1,410 participants sought

Stockton Hematology Oncology Group — Stockton, California (1.7 mi) · Sponsor: Pfizer

See eligibility & contact on ClinicalTrials.gov (NCT07222566)

Collection of Research Data and Samples From Patients Who Experience Immunotherapy Side Effects

Malignancy N/A Observational 240 participants sought

Saint Joseph's Medical Center — Stockton, California (1.7 mi) · Sponsor: Alliance for Clinical Trials in Oncology

See eligibility & contact on ClinicalTrials.gov (NCT04242095)

Testing Docetaxel-Cetuximab or the Addition of an Immunotherapy Drug, Atezolizumab, to the Usual Chemotherapy and Radiation Therapy in High-Risk Head and Neck Cancer

Oropharyngeal p16INK4a-Negative Squamous Cell Carcinoma, Stage III Hypopharyngeal Squamous Cell Carcinoma AJCC v7 Phase 2, Phase 3 Interventional 613 participants sought

Memorial Medical Center — Modesto, California (28.9 mi) · Sponsor: National Cancer Institute (NCI)

See eligibility & contact on ClinicalTrials.gov (NCT01810913)

Testing the Use of Ado-Trastuzumab Emtansine Compared to the Usual Treatment (Chemotherapy With Docetaxel Plus Trastuzumab) or Trastuzumab Deruxtecan for Recurrent, Metastatic, or Unresectable HER2-Expressing Salivary Gland Cancers

Metastatic Salivary Gland Carcinoma, Recurrent Salivary Gland Carcinoma Phase 2 Interventional 146 participants sought

Kaiser Permanente- Modesto MOB II — Modesto, California (28.9 mi) · Sponsor: NRG Oncology

See eligibility & contact on ClinicalTrials.gov (NCT05408845)

Testing Shorter Duration Radiation Therapy Versus the Usual Radiation Therapy in Patients With High Risk Prostate Cancer

Prostate Adenocarcinoma, Stage III Prostate Cancer AJCC v8 Phase 3 Interventional 1,209 participants sought

Kaiser Permanente-Stockton — Stockton, California (1.7 mi) · Sponsor: NRG Oncology

See eligibility & contact on ClinicalTrials.gov (NCT05946213)

Distance-Based Exercise to Preserve Function and Prevent Disability

Localized Malignant Solid Neoplasm, Anal Cancer N/A Interventional 104 participants sought

Kaiser Permanente-Modesto — Modesto, California (28.9 mi) · Sponsor: Alliance for Clinical Trials in Oncology

See eligibility & contact on ClinicalTrials.gov (NCT07059884)

Cadisegliatin as Adjunctive Therapy to Insulin in Participants With Type 1 Diabetes

Diabetes Mellitus, Type 1 Phase 3 Interventional 150 participants sought

Paradigm Clinical Research - Modesto — Modesto, California (28.9 mi) · Sponsor: vTv Therapeutics

See eligibility & contact on ClinicalTrials.gov (NCT06334133)

Evaluating Whether an Educational Website Called Current Together After Cancer (CTAC) Improves Follow-up Care for Colorectal Cancer Survivors

Colorectal Cancer Stage II, Colorectal Cancer Stage III Phase 3 Interventional 1,057 participants sought

Saint Joseph's Medical Center — Stockton, California (1.7 mi) · Sponsor: SWOG Cancer Research Network

See eligibility & contact on ClinicalTrials.gov (NCT07018869)

Comparing Impact of Treatment Before or After Surgery in Patients With Stage II-IIIB Resectable Non-small Cell Lung Cancer

Resectable Lung Non-Small Cell Carcinoma, Stage II Lung Cancer AJCC v8 Phase 3 Interventional 1,100 participants sought

Saint Joseph's Medical Center — Stockton, California (1.7 mi) · Sponsor: Alliance for Clinical Trials in Oncology

See eligibility & contact on ClinicalTrials.gov (NCT06632327)

Aromatherapy and Its Impact on Preoperative Anxiety, Postoperative Pain, and Patient Experience

Postoperative Pain, Preoperative Anxiety N/A Interventional 286 participants sought

Kaiser Permanente Stockton Ambulatory Surgery Unit — Stockton, California (1.7 mi) · Sponsor: Kaiser Permanente

See eligibility & contact on ClinicalTrials.gov (NCT07771205)

Standard Systemic Therapy With or Without Definitive Treatment in Treating Participants With Metastatic Prostate Cancer

Castration Levels of Testosterone, Metastatic Prostatic Adenocarcinoma Phase 3 Interventional 1,273 participants sought

Kaiser Permanente-Stockton — Stockton, California (1.7 mi) · Sponsor: SWOG Cancer Research Network

See eligibility & contact on ClinicalTrials.gov (NCT03678025)

A Study of Dostarlimab vs Placebo After Chemoradiation in Adult Participants With Locally Advanced Unresected Head and Neck Squamous Cell Carcinoma

Neoplasms, Head and Neck Phase 3 Interventional 864 participants sought

GSK Investigational Site — Stockton, California (1.7 mi) · Sponsor: GlaxoSmithKline

See eligibility & contact on ClinicalTrials.gov (NCT06256588)

Testing the Addition of Docetaxel (Chemotherapy) to the Usual Treatment (Hormonal Therapy and Apalutamide) for Metastatic Prostate Cancer, ASPIRE Trial

Castration-Sensitive Prostate Carcinoma, Metastatic Prostate Adenocarcinoma Phase 3 Interventional 1,260 participants sought

Kaiser Permanente- Modesto MOB II — Modesto, California (28.9 mi) · Sponsor: Alliance for Clinical Trials in Oncology

See eligibility & contact on ClinicalTrials.gov (NCT06931340)

A Study of S-337395 in Symptomatic Nonhospitalized Adults With Respiratory Syncytial Virus (RSV) Who Are at High Risk of Progression to Severe Disease

Respiratory Syncytial Virus Infections Phase 2 Interventional 192 participants sought

Central Valley Research — Modesto, California (28.9 mi) · Sponsor: Shionogi

See eligibility & contact on ClinicalTrials.gov (NCT07214571)

De-Escalation of Breast Radiation Trial for Hormone Sensitive, HER-2 Negative, Oncotype Recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)

Stage I Breast Cancer Phase 3 Interventional 1,670 participants sought

Kaiser Permanente-Stockton — Stockton, California (1.7 mi) · Sponsor: NRG Oncology

See eligibility & contact on ClinicalTrials.gov (NCT04852887)

S1501 Dual Observational and Randomized Cohort Study of Patients With Metastatic HER-2+ Breast Cancer at Risk of Cardiac Toxicity

Cardiotoxicity, HER2/Neu Positive Phase 3 Interventional 491 participants sought

Kaiser Permanente-Stockton — Stockton, California (1.7 mi) · Sponsor: SWOG Cancer Research Network

See eligibility & contact on ClinicalTrials.gov (NCT03418961)

CAPRI: A Phase 3 Randomized, Double-Masked Study Comparing the Efficacy of EYP-1901 Against Aflibercept in DME

Diabetic Macular Edema, DME Phase 3 Interventional 240 participants sought

Retinal Consultants Medical Group - Modesto — Modesto, California (28.9 mi) · Sponsor: EyePoint Pharmaceuticals, Inc.

See eligibility & contact on ClinicalTrials.gov (NCT07449923)

Testing Olaparib for One or Two Years, With or Without Bevacizumab, to Treat Ovarian Cancer

Fallopian Tube Endometrioid Adenocarcinoma, Fallopian Tube High Grade Serous Adenocarcinoma Phase 3 Interventional 880 participants sought

Saint Joseph's Medical Center — Stockton, California (1.7 mi) · Sponsor: NRG Oncology

See eligibility & contact on ClinicalTrials.gov (NCT06580314)

Testing the Use of Chemotherapy After Surgery for High-Risk Pancreatic Neuroendocrine Tumors

Metastatic Malignant Neoplasm in the Liver, Pancreatic Neuroendocrine Tumor Phase 2 Interventional 141 participants sought

Saint Joseph's Medical Center — Stockton, California (1.7 mi) · Sponsor: SWOG Cancer Research Network

See eligibility & contact on ClinicalTrials.gov (NCT05040360)

Vancomycin Reduction Practices (VRP) in the NICU

Antibiotic Stewardship, Neonatal Sepsis, Late-Onset N/A Interventional 13 participants sought

Kaiser Permanente Modesto Medical Center — Modesto, California (28.9 mi) · Sponsor: Children's Hospital of Philadelphia

See eligibility & contact on ClinicalTrials.gov (NCT06772675)

Comparing the Outcome of Immunotherapy-Based Drug Combination Therapy With or Without Surgery to Remove the Kidney in Metastatic Kidney Cancer, the PROBE Trial

Metastatic Clear Cell Renal Cell Carcinoma, Metastatic Renal Cell Carcinoma Phase 3 Interventional 364 participants sought

Memorial Medical Center — Modesto, California (28.9 mi) · Sponsor: SWOG Cancer Research Network

See eligibility & contact on ClinicalTrials.gov (NCT04510597)

Actively enrolling

Studies you may be able to join near Stockton

These studies are recruiting through partner research networks. We may be paid a referral fee if you complete their screening form — this never changes what you pay (nothing) or the compensation the study offers you.

Research study for alcohol-related liver damage

Enrolling US adults aged 18 to 70 with alcohol-induced liver damage and a history of heavy drinking. Not open to people with a recent stroke, heart attack, dialysis, or who take blood thinners.

Screening is free and takes a few minutes. Eligibility and any compensation are confirmed by the study team, not by this site.

Check your eligibility

Research study for bladder problems after spinal cord injury

This study is enrolling US adults aged 18 to 75 living with chronic involuntary bladder leakage caused by a spinal cord injury, for research including investigational gene therapy approaches. The study team confirms eligibility and any compensation before enrollment.

Screening is free and takes a few minutes. Eligibility and any compensation are confirmed by the study team, not by this site.

Check your eligibility

Google-rated

Top-rated research centers in Stockton

Dedicated clinical research sites near you — with their real Google ratings, reviews and contact details

St Joseph's Cancer Institute - Dignity Health - St. Joseph's Medical Center

★ 5.0

1800 N California St, Stockton, CA 95204

(209) 467-6560

Website

Central Valley Research

★ 4.9

400 E Orangeburg Ave Ste 5, Modesto, CA 95350

(209) 549-9538

Website

Therapeutic Research Center

★ 3.7

10100 Trinity Pkwy Ste 115, Stockton, CA 95219

(209) 472-2240

Website

"Used to have a great site, but now it is so glitchy I have to refresh 10 to 20 times just to take my CE or take the (required for completion) survey …"

— David A. Canfield, 2★

Sutter Institute for Medical Research: Sutter Medical Center, Sacramento

★ 4.5

2801 Capitol Ave #400, Sacramento, CA 95816

(916) 453-5898

Website

"Nice and friendly, they called me at my appointment time. Not a lot of seating in the waiting room."

— stephen scharp, 4★

Clinical Trials Research

★ 5.0

3750 Auburn Blvd Ste A, Sacramento, CA 95821

(916) 487-8230

"I asked for a business location and it popped right up."

— Barbara McGarvey, 5★

UC Davis Health - Participate in Clinical Trials

2921 Stockton Blvd, Sacramento, CA 95817

(855) 823-1660

Website

Sunwise Clinical Research

★ 4.7

1371 Oakland Blvd #301, Walnut Creek, CA 94596

(925) 298-5147

Website

"They are a great group of people"

— Tree Sap, 5★

Center For Clinical Trials Of Sacramento, Inc.

7600 Hospital Dr G, Sacramento, CA 95823

(916) 525-3377

Website

UC Davis Clinical and Translational Science Center

★ 1.8

2921 Stockton Blvd #2305, Sacramento, CA 95817

(916) 703-9184

Website

Clinical trials in Stockton: what's recruiting

The Stockton area currently has 99 studies open to new participants, according to the ClinicalTrials.gov registry maintained by the U.S. National Institutes of Health. Among the studies closest to Stockton, the most active research areas are:

Cancer & Oncology18 studies
Liver & Kidney3 studies
Diabetes & Metabolism2 studies
Brain & Mental Health1 studies
Lungs & Breathing1 studies

Every listing shows the study phase, the recruiting site and its distance from Stockton, and links to the official registry page where eligibility criteria and study contacts are published. Compensation is set by each sponsor: industry surveys report typical payments of $75 to $4,500 per completed study, with short observational studies at the low end and multi-visit or overnight Phase 1 studies at the high end.

How to enroll in a paid study in Stockton

Start with a study whose condition matches your profile — or a healthy-volunteer study if you have no diagnosis. Contact the research site through the registry page, complete a short phone screen, then attend an in-person screening visit. If you qualify, the study team walks you through the informed consent document, which details every procedure, risk and payment before you commit. You can withdraw at any point, and enrollment is always free.

Stockton participants can also register with the dedicated research centers listed above — many maintain volunteer databases and call when a matching study opens — or sign up for our email alert below to hear when a new study starts recruiting within 30 miles of your ZIP code.

Frequently asked questions

Do I need to be sick to join a clinical trial in Stockton?

No. Many studies recruit healthy volunteers, especially early-phase studies run at dedicated research centers. Others need participants diagnosed with a specific condition. Every trial lists its eligibility criteria — age range, condition, medications — and the study team screens you before enrollment.

Are clinical trials in Stockton safe?

Every trial on this page is registered on ClinicalTrials.gov, the official NIH registry, and is overseen by an Institutional Review Board (IRB). Before joining you receive an informed consent document detailing procedures, risks and compensation. Participation is voluntary and you can withdraw at any time.

How do I join a study in Stockton, CA?

Pick a study that matches your profile, contact the research site (or apply through the study links on this page), pass a phone pre-screen, then attend an in-person screening visit. If you qualify, you review and sign the informed consent and the study begins. The process typically takes 1-3 weeks.

What is the difference between a research center and a hospital study in Stockton?

Dedicated research centers (listed on this page with their Google ratings) run studies as their core business — often healthy-volunteer and vaccine studies with structured compensation. Hospital and university studies tend to focus on patients with specific conditions. Both types are registered and IRB-supervised.

Can I be in more than one clinical trial at a time?

Generally no — most studies exclude participants currently enrolled in another trial, and paid Phase 1 studies enforce a washout period (often 30 days or more) between studies. Frequent healthy volunteers in Stockton typically complete one or two studies per year.

Paid clinical trials near Stockton

Other metros within reach

Elk Grove, CA629 Modesto, CA98 Antioch, CA451 Sacramento, CA638 Concord, CA1,509 Fairfield, CA345 Roseville, CA639 Fremont, CA2,256

By condition

Eligibility and exclusions, condition by condition

Alcoholic Liver Disease in Stockton Bladder Issues Due To Spinal Cord Injury in Stockton All conditions

More of CA

Long Beach3,361 Torrance3,253 Fullerton3,246 Anaheim3,181 Garden Grove3,176 Pomona3,138 Glendale2,959 Los Angeles2,949 Huntington Beach2,863 Santa Clarita2,390 Hayward2,268 Oakland2,257

New paid studies open every week

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