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.
- Loma Linda University Medical CenterLoma Linda86 studies
- City of Hope UplandUpland30 studies
- Kaiser Permanente-RiversideRiverside30 studies
- Kaiser Permanente-FontanaFontana27 studies
- Kaiser Permanente-OntarioOntario25 studies
- Eisenhower Medical CenterRancho Mirage17 studies
- Loma Linda University HealthLoma Linda17 studies
- Catalina Research Institute, LLCMontclair16 studies
- Loma Linda UniversityLoma Linda15 studies
- Artemis Institute for Clinical ResearchRiverside13 studies
- Desert Oasis Healthcare Medical GroupPalm Springs11 studies
- Inland Psychiatric Medical Group.Chino11 studies
- City of Hope CoronaCorona10 studies
- Desert Regional Medical CenterPalm Springs8 studies
- Anderson Clinical ResearchRedlands6 studies
Cite these figures
Free to use under CC BY 4.0. Please credit LocalTrial with a link to this page.
Source: LocalTrial, Clinical trials in the Riverside area, https://www.localtrial.com/clinical-trials/california/riverside, updated November 12, 2026.
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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