Paid Clinical Trials in Los Angeles, CA
As of June 2026, 2,059 paid clinical trials are recruiting in Los Angeles, California. Compensation typically covers time, travel, and study visits, with stipends ranging from modest amounts for short outpatient studies to several thousand dollars for long or inpatient protocols.
Los Angeles offers studies at sites including Cedars-Sinai Medical Center for conditions such as Breast Cancer, Colorectal Cancer, Prostate Cancer, Advanced Solid Tumor. Both patients with specific conditions and healthy volunteers can qualify. Most trials offer free study-related medical care alongside compensation.
Recruiting trial data synced daily from ClinicalTrials.gov. Last sync: .
Trials by specialty in Los Angeles
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·Clear filters·↓ Download CSVAbout research studies in Los Angeles
Los Angeles has approximately 2,059 recruiting research studies across a wide range of therapeutic areas. California hosts a dense network of world-class research institutions, including UC San Diego Health, Stanford Medicine, UCLA Health, UCSF, City of Hope, and Scripps Research. The state's thriving biotech corridor and diverse patient population make it a national hub for both early-phase and late-phase clinical research.
Top Research Study Locations in Los Angeles
Researchers run research studies in Los Angeles, CA at 25 active sites. The clinics below currently host the largest number of recruiting studies — each name is followed by the conditions they focus on most.
| Site | Specializes in | Active trials |
|---|---|---|
| Cedars-Sinai Medical Center | Breast Cancer, Acute Myeloid Leukemia, Chronic Pancreatitis | 229 |
| Children's Hospital Los Angeles | Neuroblastoma, Acute Myeloid Leukemia, Anesthesia | 129 |
| University of California, Los Angeles | Alzheimer Disease, Depression, Focal Epilepsy | 112 |
| University of Southern California | Acute Pancreatitis, Alzheimer Disease, Amyotrophic Lateral Sclerosis | 104 |
| USC / Norris Comprehensive Cancer Center | Malignant Solid Neoplasm, Breast Carcinoma, Hematopoietic and Lymphatic System Neoplasm | 87 |
| Cedars Sinai Medical Center | Aortic Dissection, Crohn's Disease, Heart Failure | 75 |
| University of California Los Angeles | Parkinson Disease, Bladder Cancer, Breast Cancer | 71 |
| UCLA / Jonsson Comprehensive Cancer Center | Prostate Carcinoma, Prostate Adenocarcinoma, Stage II Prostate Cancer AJCC v8 | 69 |
| Los Angeles General Medical Center | Metastatic Malignant Solid Neoplasm, Stage IVB Prostate Cancer AJCC v8, Unresectable Malignant Solid Neoplasm | 68 |
| UCLA | Bladder Cancer, COVID-19, Pulmonary Fibrosis | 58 |
| Kaiser Permanente Los Angeles Medical Center | Stage IV Lung Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Intracerebral Hemorrhage | 50 |
| USC Norris Comprehensive Cancer Center | Colorectal Cancer, Endometrial Cancer, Head and Neck Squamous Cell Carcinoma | 48 |
| Children's Hospital of Los Angeles | Acute Lymphoblastic Leukemia, Cystic Fibrosis, Liver Diseases | 41 |
| Valkyrie Clinical Trials | Multiple Myeloma, Solid Tumors, Advanced Solid Tumors | 36 |
| Ronald Reagan UCLA Medical Center | Ischemic Stroke, Stroke, Esophageal Adenocarcinoma | 28 |
| USC/Norris Comprehensive Cancer Center | Breast Cancer, Breast Neoplasms, Bladder Cancer | 27 |
| UCLA Medical Center | Colorectal Cancer, CRC, Cancer | 22 |
| Keck Medicine of USC Koreatown | Advanced Esophageal Adenocarcinoma, Advanced Gastric Adenocarcinoma, Advanced Gastroesophageal Junction Adenocarcinoma | 20 |
| Kaiser Permanente West Los Angeles | Recurrent Lung Non-Small Cell Carcinoma, Stage IV Lung Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8 | 19 |
| David Geffen School of Medicine at UCLA | Developmental and Epileptic Encephalopathy, Advanced Solid Tumor, Candidemia | 15 |
| Cedars-Sinai | Crohn Disease, Coronary Artery Disease, Gaucher Disease | 13 |
| Keck Hospital of USC | Advanced or Metastatic Solid Tumors, Airway Disease, Airway Management | 13 |
| Mattel Children's Hospital UCLA | Malignant Solid Neoplasm, Ganglioneuroblastoma, Nodular, Hematopoietic and Lymphatic System Neoplasm | 13 |
| University of California at Los Angeles | ASD, Advanced Tumors, Alzheimer's Disease | 13 |
| University of California, Los Angeles (UCLA) | Adamantinomatous Craniopharyngioma, Adenosine Deaminase Severe Combined Immune Deficiency, Angelman Syndrome | 13 |
Active & Upcoming Studies in Los Angeles (2026)
Recruiting trials in Los Angeles grouped by therapeutic area, drawn from ClinicalTrials.gov. Each bucket shows the most recent example studies.
Cancer & tumors (670 active studies)
- Zipalertinib With Carboplatin and Pemetrexed for the Treatment of Resectable, Stage II-IIIB, Non-Small Cell Lung Cancer · Phase 2 · Jonsson Comprehensive Cancer Center
- GYN-AIDE: Gynecologic Oncology Navigation Through AI-Driven Education · University of Southern California
Neurology & pain (122 active studies)
- Measuring Pelvic Floor Muscle Fitness Before and After Treatment · University of California, Los Angeles
- Ketamine HCl Prolonged Release Oral Tablets for CRPS · Phase 2 · University of Southern California
Cardiovascular (96 active studies)
Diabetes & metabolic (63 active studies)
- Safety and Efficacy of NA-931 and Tirzepatide in Adults Who Are Overweight or Obese · Phase 2 · Biomed Industries, Inc.
- Early Re-Initiation of Semaglutide Post Sleeve Gastrectomy in Youth · Phase 3 · Children's Hospital Los Angeles
Mental health & behavior (62 active studies)
- A Social Network Approach to Improve HIV Prevention and Substance Use Treatment For People Who Use Drugs · NYU Langone Health
- Group PACBT for Depression · Phase 2 · University of California, Los Angeles
Pediatric (37 active studies)
- Early Re-Initiation of Semaglutide Post Sleeve Gastrectomy in Youth · Phase 3 · Children's Hospital Los Angeles
- Reference Range Study for the Quantra System With the QPlus Cartridge in Pediatric Patients · HemoSonics LLC
HIV / STI (25 active studies)
- Evaluating a Clinical Decision Support Tool for Antiretroviral Therapy Optimization · Keck School of Medicine of USC
- A Social Network Approach to Improve HIV Prevention and Substance Use Treatment For People Who Use Drugs · NYU Langone Health
Eye & vision (14 active studies)
- Feasibility Study of a Remote Behavioral Dietary Intervention in Patients With Early to Intermediate AMD: Glucose Lowering for Vision Extension · Stanford University
- This Clinical Trial Compares Two Phacoemulsification Systems Used in a Bilateral Cataract Surgery Subjects in Order to Study CDE and Ultrasound Time During Cataract Removal · Nicole Fram M.D.
Vaccines (11 active studies)
Common conditions studied in Los Angeles
- Breast Cancer (47 active studies). Breast cancer trials evaluate new hormone therapies, targeted drugs, and immunotherapy combinations aimed at improving survival and reducing recurrence.
- Colorectal Cancer (29 active studies). Colorectal cancer trials explore novel chemotherapy combinations, targeted agents, and immunotherapy for microsatellite-instability-high tumors.
- Prostate Cancer (28 active studies). Prostate cancer studies test next-generation hormone therapies, PARP inhibitors, and radioligand treatments for both localized and advanced disease.
- Advanced Solid Tumor (21 active studies). Recruiting Advanced Solid Tumor studies evaluate investigational treatments, diagnostics, and supportive care approaches to improve patient outcomes.
- Cancer (21 active studies). Recruiting Cancer studies evaluate investigational treatments, diagnostics, and supportive care approaches to improve patient outcomes.
- Heart Failure (21 active studies). Heart failure trials explore SGLT-2 inhibitors, novel myosin modulators, and device-based therapies for both reduced and preserved ejection fraction.
Leading research sponsors in Los Angeles
- University of California, Los Angeles
- University of Southern California
- Cedars-Sinai Medical Center
- Jonsson Comprehensive Cancer Center
- National Cancer Institute (NCI)
Local regulations and guidelines
Clinical trials in California are governed by U.S. Food and Drug Administration (FDA) regulations, Office for Human Research Protections (OHRP) standards, and federal HIPAA privacy rules. Every study is reviewed by an Institutional Review Board (IRB) to protect participant safety and ensure informed consent. In addition, California-specific protections such as the California Consumer Privacy Act (CCPA) and the Confidentiality of Medical Information Act (CMIA) impose stringent data-privacy requirements on research involving California residents.
Compensation & what to expect
- How payment typically works
- Compensation is most often provided through reloadable electronic study cards or direct deposit, paid out per completed visit rather than as a lump sum. Amounts vary by the time required, the number of visits, and the study's complexity — overnight stays and inpatient pharmacology studies generally pay more than short outpatient surveys. The exact amount is disclosed in writing during informed consent before any visit.
- Healthy volunteers
- Healthy participants aged 18 and older can earn compensation by joining vaccine, pharmacology, and biomarker studies in Los Angeles. These trials check how a new drug or vaccine behaves in healthy bodies before later-phase testing. Many sites maintain a healthy-volunteer registry so you hear about new opportunities first.
- What's included beyond payment
- Most trials cover study-related medical care at no cost — physical exams, lab work, imaging, the investigational treatment itself, and follow-up visits with the research team. Insurance is not required to participate. Free check-ups and access to specialists are common reasons participants return for additional studies.
- Travel and time
- Many sponsors reimburse travel, parking, mileage, and lost wages for visit days. Long-running studies and trials that require frequent visits often raise stipends accordingly. Ask the study coordinator for the visit schedule and reimbursement policy before you commit.
- Asking about compensation
- Compensation is set per protocol and per site, so figures are not published in trial registries. The fastest way to confirm payment for a specific study is to contact the recruiting site listed on the study record. Coordinators are accustomed to this question and will quote the per-visit and total amounts up front.
How to find a clinical trial in Los Angeles
Hipa.ai aggregates every recruiting study in Los Angeles from ClinicalTrials.gov and refreshes the list daily. Use the filters above to narrow by condition, facility, age, phase, or healthy-volunteer eligibility, then click any study title to view full details — eligibility criteria, intervention, location, and sponsor contact information. To enroll, reach out to the central study contact listed on the study detail page; the research coordinator will walk you through the screening process.
Frequently asked questions
How many paid clinical trials are currently recruiting in Los Angeles?
There are approximately 2,059 recruiting clinical trials in Los Angeles, California listed on ClinicalTrials.gov. The number changes weekly as new studies open and others close enrollment.
Do clinical trials in Los Angeles pay participants?
Most recruiting trials in Los Angeles compensate participants for their time, travel, and study visits. Compensation varies by sponsor, study phase, and visit requirements — the exact amount is disclosed by the study team during the informed consent process.
Who can participate in a clinical trial in Los Angeles?
Eligibility depends on the specific study. Each trial defines its own inclusion criteria (age, diagnosis, medical history, prior treatments) and exclusion criteria. Both patients with specific conditions and healthy volunteers can qualify, depending on the study design.
What conditions are most commonly studied in Los Angeles?
The most common conditions under active study in Los Angeles include Breast Cancer (47), Colorectal Cancer (29), Prostate Cancer (28), Advanced Solid Tumor (21), among many others. Browse the list above to explore every recruiting trial.
Are there clinical trials for healthy volunteers in Los Angeles?
Yes. Healthy-volunteer studies — often early-phase pharmacology or vaccine trials — recruit in Los Angeles on an ongoing basis. Use the "Healthy volunteers only" filter above to view trials that accept participants without the study's target condition.
How do I enroll in a clinical trial in Los Angeles?
Click any study title above to see the full study record, including eligibility criteria, visit schedule, and the study team's contact information. Reach out to the central contact or recruiting site directly — they will guide you through screening and informed consent.
Where can I take part in paid clinical trials in Los Angeles?
Recruiting research sites in Los Angeles include Cedars-Sinai Medical Center, Children's Hospital Los Angeles, University of California, Los Angeles, among others. Each site lists its open studies and contact information on the study record above — call or email the site coordinator to ask about screening for a specific protocol.
What kinds of studies are recruiting in Los Angeles right now?
The largest active categories in Los Angeles are Cancer & tumors (670), Neurology & pain (122), Cardiovascular (96). Use the filters above to narrow by therapeutic area, phase, age, or healthy-volunteer eligibility.