How much do paid clinical trials in Fairfield pay?

Compensation varies by study length, procedures and overnight stays. Industry surveys report typical payments from $75 to $4,500 per completed study, with simple observational studies at the low end and multi-week inpatient Phase 1 studies at the high end. Each listing's study team will confirm the exact amount before you enroll.

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

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 Fairfield 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 Fairfield, 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 Fairfield?

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.

Paid Clinical Trials Fairfield, CA — 349 Studies Recruiting (Jul 2026)

Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer

PIK3CA Mutation, HER2- Negative Breast Cancer Phase 3 Interventional 540 participants sought

Kaiser Permanente Medical Center — Vallejo, California (16.1 mi) · Sponsor: Relay Therapeutics, Inc.

See eligibility & contact on ClinicalTrials.gov (NCT06982521)

AMAZE 12: A Research Study Investigating How Well the Medicine NNC0487-0111 Helps People With Excess Body Weight Maintain Their Weight Loss

Obesity Phase 3 Interventional 600 participants sought

Diablo Clinical Research, Inc. — Walnut Creek, California (24.4 mi) · Sponsor: Novo Nordisk A/S

See eligibility & contact on ClinicalTrials.gov (NCT07503210)

A Research Study Investigating How Well the Medicine NNC0487-0111 Helps People With Excess Body Weight and Knee Osteoarthritis Lose Weight and Reduce Pain

Obesity, Knee Osteoarthritis (OA) Phase 3 Interventional 400 participants sought

Diablo Clinical Research, Inc. — Walnut Creek, California (24.4 mi) · Sponsor: Novo Nordisk A/S

See eligibility & contact on ClinicalTrials.gov (NCT07481630)

A Research Study Comparing How Well Different Doses of the Medicine NNC0662-0419 Lower Blood Sugar in People With Type 2 Diabetes

Diabetes Mellitus, Type 2 Phase 2 Interventional 270 participants sought

Diablo Clinical Research, Inc. — Walnut Creek, California (24.4 mi) · Sponsor: Novo Nordisk A/S

See eligibility & contact on ClinicalTrials.gov (NCT07415954)

Study to Evaluate Efficacy and Safety of Firmonertinib Compared With Investigator's Choice of EGFR Inhibitor as First-Line Treatment in Participants Who Have Locally Advanced or Metastatic NSCLC With EGFR P-Loop and Alpha C-Helix Compressing (PACC) Uncommon Mutations

Non-Small-Cell Lung Cancer, Metastatic Non-Small-Cell Lung Cancer Phase 3 Interventional 480 participants sought

Kaiser Permanente Medical Center — Vallejo, California (16.1 mi) · Sponsor: ArriVent BioPharma, Inc.

See eligibility & contact on ClinicalTrials.gov (NCT07185997)

STOP-HAE: A Phase 3 Study of ADX-324 in HAE

Hereditary Angioedema, HAE Phase 3 Interventional 90 participants sought

ADARx Clinical Site — Walnut Creek, California (24.4 mi) · Sponsor: ADARx Pharmaceuticals, Inc.

See eligibility & contact on ClinicalTrials.gov (NCT06960213)

Study of Student Flourishing

Healthy N/A Interventional 2,500 participants sought

University of California, Berkeley — Berkeley, California (29.7 mi) · Sponsor: Flourish Science, Inc.

See eligibility & contact on ClinicalTrials.gov (NCT07259746)

Phase III, Open-label Study of First-line Osimertinib With or Without Datopotamab Deruxtecan for EGFRm Locally Advanced or Metastatic Non-small Cell Lung Cancer

Non-small Cell Lung Cancer Phase 3 Interventional 582 participants sought

Research Site — Walnut Creek, California (24.4 mi) · Sponsor: AstraZeneca

See eligibility & contact on ClinicalTrials.gov (NCT06350097)

A Study to Evaluate the Safety and Efficacy of Ruxolitinib Cream in Pediatric Participants With Nonsegmental Vitiligo

NonSegmental Vitiligo Phase 3 Interventional 180 participants sought

Golden State Dermatology — Walnut Creek, California (24.4 mi) · Sponsor: Incyte Corporation

See eligibility & contact on ClinicalTrials.gov (NCT06548360)

Study Assessing Activity of Intravenous (IV) Etentamig Monotherapy Versus Standard Available Therapies in Adult Participants With Relapsed or Refractory Multiple Myeloma

Multiple Myeloma Phase 3 Interventional 380 participants sought

Alta Bates Summit Medical Center for Research /ID# 261438 — Berkeley, California (29.7 mi) · Sponsor: AbbVie

See eligibility & contact on ClinicalTrials.gov (NCT06158841)

MOTION Clinical Trial

Osteoarthritis, Knee N/A Interventional 100 participants sought

UC Davis Department of Orthopaedic Surgery — Davis, California (25.4 mi) · Sponsor: Moximed

See eligibility & contact on ClinicalTrials.gov (NCT06843980)

Comparing New Treatments for People With Newly Diagnosed Acute Myeloid Leukemia That Has an IDH2 Gene Change (A MyeloMATCH Treatment Trial)

Acute Myeloid Leukemia Phase 2 Interventional 93 participants sought

Alta Bates Summit Medical Center-Herrick Campus — Berkeley, California (29.7 mi) · Sponsor: National Cancer Institute (NCI)

See eligibility & contact on ClinicalTrials.gov (NCT06672146)

A Study to Assess the Adverse Events and Change in Disease Activity of Oral Atogepant Tablets in Pediatric Participants (6-17 Years of Age) With Episodic Migraine

Episodic Migraine Phase 3 Interventional 450 participants sought

Sunwise Clinical Research /ID# 248529 — Walnut Creek, California (24.4 mi) · Sponsor: AbbVie

See eligibility & contact on ClinicalTrials.gov (NCT05711394)

Testing the Use of Combination Therapy in Adult Patients With Newly Diagnosed Multiple Myeloma, the EQUATE Trial

Plasma Cell Myeloma, RISS Stage I Plasma Cell Myeloma Phase 3 Interventional 1,450 participants sought

Sutter Solano Medical Center/Cancer Center — Vallejo, California (16.1 mi) · Sponsor: ECOG-ACRIN Cancer Research Group

See eligibility & contact on ClinicalTrials.gov (NCT04566328)

Study to Determine if BHV-1300 is Effective and Safe in Adults With Graves' Disease

Graves Disease Phase 3 Interventional 300 participants sought

Site-067 — Walnut Creek, California (24.4 mi) · Sponsor: Biohaven Therapeutics Ltd.

See eligibility & contact on ClinicalTrials.gov (NCT07661056)

Clinical Assessment of Response in the Treatment of Depression With Daytime Sleepiness Using Solriamfetol

Major Depressive Disorder With Excessive Daytime Sleepiness Symptoms Phase 3 Interventional 508 participants sought

Clinical Research Site — Walnut Creek, California (24.4 mi) · Sponsor: Axsome Therapeutics, Inc.

See eligibility & contact on ClinicalTrials.gov (NCT07484217)

Safety and Efficacy of Endovascular Treatment of Intracranial Aneurysms With Surpass Elite With GUARDian Flow Diverter (GUARD)

Aneurysm, Aneurysm, Intracranial N/A Interventional 183 participants sought

University of California Davis Health — Davis, California (25.4 mi) · Sponsor: Stryker Neurovascular

See eligibility & contact on ClinicalTrials.gov (NCT06872684)

Dichoptic Treatment for Amblyopia in Children 8 to 12 Years of Age

Amblyopia Phase 3 Interventional 252 participants sought

Univ. of California- Berkeley — Berkeley, California (29.7 mi) · Sponsor: Jaeb Center for Health Research

See eligibility & contact on ClinicalTrials.gov (NCT06524882)

A Study of Opevesostat (MK-5684) Versus Alternative Next-generation Hormonal Agent (NHA) in Metastatic Castration-resistant Prostate Cancer (mCRPC) Post One NHA (MK-5684-004)

Metastatic Castration-resistant Prostate Cancer (mCRPC), Prostatic Neoplasms Phase 3 Interventional 1,314 participants sought

Kaiser Permanente-Kaiser Permanente, Vallejo Medical Center, Adult Oncology ( Site 0101) — Vallejo, California (16.1 mi) · Sponsor: Merck Sharp & Dohme LLC

See eligibility & contact on ClinicalTrials.gov (NCT06136650)

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-Vallejo — Vallejo, California (16.1 mi) · Sponsor: National Cancer Institute (NCI)

See eligibility & contact on ClinicalTrials.gov (NCT05564390)

Addressing Diabetes by Elevating Access to Nutrition

Diabetes, Obesity N/A Interventional 360 participants sought

La Clínica Monument — Concord, California (19.4 mi) · Sponsor: Stanford University

See eligibility & contact on ClinicalTrials.gov (NCT05228860)

A Study in People With Diabetic Macular Edema to Test How Well Different Doses of BI 3812465 Are Tolerated

Diabetic Macular Edema Phase 1, Phase 2 Interventional 49 participants sought

Bay Area Retina Associates - Walnut Creek — Walnut Creek, California (24.4 mi) · Sponsor: Boehringer Ingelheim

See eligibility & contact on ClinicalTrials.gov (NCT07553429)

A Randomized, Double-Blind, Placebo-Controlled Trial on Efficacy and Safety of Fluticasone Propionate/Albuterol Sulfate Combination in Participants 12 Years and Older With Asthma

Asthma Phase 3 Interventional 724 participants sought

Teva Investigational Site 12091 — Walnut Creek, California (24.4 mi) · Sponsor: Teva Branded Pharmaceutical Products R&D LLC

See eligibility & contact on ClinicalTrials.gov (NCT06664619)

A Study of Camizestrant in ER+/HER2- Early Breast Cancer After at Least 2 Years of Standard Adjuvant Endocrine Therapy

Breast Cancer, Early Breast Cancer Phase 3 Interventional 4,300 participants sought

Research Site — Concord, California (19.4 mi) · Sponsor: AstraZeneca

See eligibility & contact on ClinicalTrials.gov (NCT05774951)

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

Saint Helena Hospital — St. Helena, California (29.2 mi) · Sponsor: National Cancer Institute (NCI)

See eligibility & contact on ClinicalTrials.gov (NCT01810913)

Paid Clinical Trials in Fairfield, CA

Studies recruiting near Fairfield right now

Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer

AMAZE 12: A Research Study Investigating How Well the Medicine NNC0487-0111 Helps People With Excess Body Weight Maintain Their Weight Loss

A Research Study Investigating How Well the Medicine NNC0487-0111 Helps People With Excess Body Weight and Knee Osteoarthritis Lose Weight and Reduce Pain

A Research Study Comparing How Well Different Doses of the Medicine NNC0662-0419 Lower Blood Sugar in People With Type 2 Diabetes

Study to Evaluate Efficacy and Safety of Firmonertinib Compared With Investigator's Choice of EGFR Inhibitor as First-Line Treatment in Participants Who Have Locally Advanced or Metastatic NSCLC With EGFR P-Loop and Alpha C-Helix Compressing (PACC) Uncommon Mutations

STOP-HAE: A Phase 3 Study of ADX-324 in HAE

Study of Student Flourishing

Phase III, Open-label Study of First-line Osimertinib With or Without Datopotamab Deruxtecan for EGFRm Locally Advanced or Metastatic Non-small Cell Lung Cancer

A Study to Evaluate the Safety and Efficacy of Ruxolitinib Cream in Pediatric Participants With Nonsegmental Vitiligo

Study Assessing Activity of Intravenous (IV) Etentamig Monotherapy Versus Standard Available Therapies in Adult Participants With Relapsed or Refractory Multiple Myeloma

MOTION Clinical Trial

Comparing New Treatments for People With Newly Diagnosed Acute Myeloid Leukemia That Has an IDH2 Gene Change (A MyeloMATCH Treatment Trial)

A Study to Assess the Adverse Events and Change in Disease Activity of Oral Atogepant Tablets in Pediatric Participants (6-17 Years of Age) With Episodic Migraine

Testing the Use of Combination Therapy in Adult Patients With Newly Diagnosed Multiple Myeloma, the EQUATE Trial

Study to Determine if BHV-1300 is Effective and Safe in Adults With Graves' Disease

Clinical Assessment of Response in the Treatment of Depression With Daytime Sleepiness Using Solriamfetol

Safety and Efficacy of Endovascular Treatment of Intracranial Aneurysms With Surpass Elite With GUARDian Flow Diverter (GUARD)

Dichoptic Treatment for Amblyopia in Children 8 to 12 Years of Age

A Study of Opevesostat (MK-5684) Versus Alternative Next-generation Hormonal Agent (NHA) in Metastatic Castration-resistant Prostate Cancer (mCRPC) Post One NHA (MK-5684-004)

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

Addressing Diabetes by Elevating Access to Nutrition

A Study in People With Diabetic Macular Edema to Test How Well Different Doses of BI 3812465 Are Tolerated

A Randomized, Double-Blind, Placebo-Controlled Trial on Efficacy and Safety of Fluticasone Propionate/Albuterol Sulfate Combination in Participants 12 Years and Older With Asthma

A Study of Camizestrant in ER+/HER2- Early Breast Cancer After at Least 2 Years of Standard Adjuvant Endocrine Therapy

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

Top-rated research centers in Fairfield

Pacific Clinics

John Muir Health Clinical Research Center

Clinical Research of California

Metabolic Research Center - Touro University California

Sunwise Clinical Research

California Institute of Research and Technology LLC

Clinical Trials Research

UC Davis Health - Participate in Clinical Trials

Neurovations Research

Clinical trials in Fairfield: what's recruiting

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