Clinical trials near you

Clinical trials in the Riverside area

436 studies are recruiting volunteers at 265 research sites in the Riverside-San Bernardino-Ontario, CA area.

Sites in Riverside, Loma Linda, Murrieta, Redlands, Rancho Mirage, Chino and 23 more towns.

#54 in the US for recruiting studies#6 in California#170 in the US per resident

Studies recruiting
436
Research sites
265
Conditions studied
118
Studies per 100,000 residents
9.2

Conditions being studied

The conditions with the most studies recruiting in the area. A study can be for more than one condition.

  • Depressive disorder23 studies
  • Breast cancer20 studies
  • Lung cancer19 studies
  • Overweight and obesity16 studies
  • Liver disease15 studies
  • Alzheimer's disease13 studies
  • Schizophrenia13 studies
  • Fatty liver disease (MASH/NASH)12 studies
  • Type 2 diabetes12 studies
  • Age-related macular degeneration (AMD)11 studies
  • Inflammatory bowel disease (IBD)11 studies
  • Leukemia10 studies
  • Peripheral nerve disease10 studies
  • Prostate cancer10 studies
  • Retinal degeneration10 studies
All 118 conditions
  • Depressive disorder23
  • Breast cancer20
  • Lung cancer19
  • Overweight and obesity16
  • Liver disease15
  • Alzheimer's disease13
  • Schizophrenia13
  • Fatty liver disease (MASH/NASH)12
  • Type 2 diabetes12
  • Age-related macular degeneration (AMD)11
  • Inflammatory bowel disease (IBD)11
  • Leukemia10
  • Peripheral nerve disease10
  • Prostate cancer10
  • Retinal degeneration10
  • Systemic lupus erythematosus (SLE)9
  • Bladder cancer8
  • Head and neck cancer8
  • Kidney cancer8
  • Non-Hodgkin's lymphoma8
  • Ulcerative colitis (UC)8
  • Colorectal cancer (bowel cancer)7
  • Interstitial lung disease7
  • Anxiety disorder6
  • Crohn's disease6
  • Neuroendocrine tumor6
  • Osteoarthritis (OA)6
  • Psychotic disorder6
  • Autism spectrum disorder (ASD)5
  • Bipolar disorder5
  • Chronic kidney disease (CKD)5
  • Heart failure5
  • Ischemic heart disease (IHD)5
  • Melanoma5
  • Rheumatoid arthritis5
  • Skin cancer5
  • Cardiovascular disease4
  • Neuropathic pain4
  • Sarcoma of soft tissue4
  • Uterine cancer4
  • Attention-deficit hyperactivity disorder (ADHD)3
  • Brain cancer3
  • Cervical cancer3
  • Gastric cancer (stomach cancer)3
  • High blood pressure (hypertension)3
  • Low back pain3
  • Macular edema3
  • Ovarian cancer3
  • Sleep apnea3
  • Systemic sclerosis3
  • Amyotrophic lateral sclerosis (ALS)2
  • Anemia2
  • Asthma2
  • Atrial fibrillation (AF)2
  • Axial spondyloarthritis2
  • Congenital heart disease2
  • COVID-192
  • Diabetic eye disease2
  • Down syndrome2
  • Endometrial cancer2
  • Esophageal cancer2
  • Germ cell tumor2
  • Hemophilia A2
  • Hodgkin's lymphoma2
  • Human immunodeficiency virus infection (HIV)2
  • Hypercholesterolemia2
  • Idiopathic inflammatory myopathy2
  • Influenza (flu)2
  • Intellectual disability2
  • Migraine2
  • Motor neuron disease (MND)2
  • Neuroblastoma2
  • Overactive bladder (OAB)2
  • Pancreatic cancer2
  • Post-transplant lymphoproliferative disorder2
  • Rhabdomyosarcoma2
  • Stroke2
  • Testicular cancer2
  • Abdominal aortic aneurysm1
  • Alopecia1
  • Alopecia areata1
  • Bone cyst1
  • Carpal tunnel syndrome1
  • Chronic obstructive pulmonary disease (COPD)1
  • Chronic skin ulcer1
  • Duchenne muscular dystrophy (DMD)1
  • Eczema (atopic dermatitis)1
  • Fibromyalgia1
  • Gastrointestinal stromal tumor1
  • Gout1
  • Hemophilia B1
  • Hepatitis C1
  • Irritable bowel syndrome (IBS)1
  • Juvenile idiopathic arthritis (JIA)1
  • Multiple myeloma (MM)1
  • Multiple sclerosis (MS)1
  • Myelodysplastic syndrome (MDS)1
  • Neuromyelitis optica spectrum disorder (NMOSD)1
  • Opioid use disorder1
  • Parkinson's disease (PD)1
  • Peripheral vascular disease1
  • Polycythemia vera1
  • Polymyalgia rheumatica1
  • Post-traumatic stress disorder (PTSD)1
  • Prurigo nodularis1
  • Psoriasis1
  • Psoriatic arthritis (PsA)1
  • Pulmonary hypertension1
  • Recurrent urinary tract infection (UTI)1
  • Rotator cuff syndrome1
  • Schizoaffective disorder1
  • Sickle cell disease1
  • Spinal muscular atrophy (SMA)1
  • Traumatic brain injury1
  • Urinary incontinence1
  • Vaginal cancer1
  • Vasculitis1
  • Vulvar cancer1

106 more studies are for conditions not yet in our catalog.

Whom the studies accept

The share of the area's studies open to each group. A study can accept several.

  • Adults 18 to 6491%
  • Adults 65 and over83%
  • Children and teens (under 18)20%
  • Healthy volunteers7%
  • Open to all sexes92%
  • Women only5%
  • Men only3%

32 studies are for children only.

Study phases

Earlier phases test safety in fewer people; later phases compare a treatment with the usual care in many.

  • Phase 13%
  • Phase 1/22%
  • Phase 220%
  • Phase 2/33%
  • Phase 343%
  • Phase 43%
  • No phase (device, behavioral and other studies)15%
  • Not stated11%

Most active research sites

The sites recruiting for the most studies in the area.

  1. Loma Linda University Medical CenterLoma Linda86 studies
  2. City of Hope UplandUpland30 studies
  3. Kaiser Permanente-RiversideRiverside30 studies
  4. Kaiser Permanente-FontanaFontana27 studies
  5. Kaiser Permanente-OntarioOntario25 studies
  6. Eisenhower Medical CenterRancho Mirage17 studies
  7. Loma Linda University HealthLoma Linda17 studies
  8. Catalina Research Institute, LLCMontclair16 studies
  9. Loma Linda UniversityLoma Linda15 studies
  10. Artemis Institute for Clinical ResearchRiverside13 studies
  11. Desert Oasis Healthcare Medical GroupPalm Springs11 studies
  12. Inland Psychiatric Medical Group.Chino11 studies
  13. City of Hope CoronaCorona10 studies
  14. Desert Regional Medical CenterPalm Springs8 studies
  15. Anderson Clinical ResearchRedlands6 studies

Cite these figures

Free to use under CC BY 4.0. Please credit LocalTrial with a link to this page.

As text

Source: LocalTrial, Clinical trials in the Riverside area, https://www.localtrial.com/clinical-trials/california/riverside, updated November 12, 2026.

With the link, for a web page

Source: <a href="https://www.localtrial.com/clinical-trials/california/riverside">LocalTrial, Clinical trials in the Riverside area</a>, updated November 12, 2026.

About these figures

Counted from ClinicalTrials.gov, the U.S. registry of clinical studies, for studies recruiting in the United States. A study is counted once however many sites it has in the area.

The area is the U.S. Census Bureau's Riverside-San Bernardino-Ontario, CA metropolitan area. Residents: 4,744,214, the Census Bureau's latest estimate. Updated November 12, 2026.

These figures describe studies, not advice. Talk to your doctor before joining one.

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Clinical Trials in Riverside, CA | LocalTrial