Gregory Scott Day MD MSc MSCI FAAN FANA
Neurodegenerative, Dementia & Geriatrics
Associate Professor of Neurology
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4500 San Pablo Rd SJacksonville, FL 32224
Phone+1 904-953-2000
Fax+1 904-953-0757
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Summary
- Dr. Gregory Day is a neurologist based in Jacksonville, FL, with subspecialties in neurodegenerative conditions, dementia, and geriatrics. He completed his medical education at Queen's University at Kingston, followed by a residency at the University of Toronto, and holds multiple postgraduate qualifications in neuroscience, clinical investigation, and memory and aging. Dr. Day is currently a consultant at Mayo Clinic Hospital in Florida and has previous experience as an assistant professor at Washington University in St. Louis School of Medicine. His expertise includes progressive supranuclear palsy, dementia, Alzheimer's disease, prion-related dementia, and frontotemporal lobar degeneration. Dr. Day has published extensively on Alzheimer's disease and has been involved in several clinical trials addressing diverse topics such as NMDAR encephalitis and early-onset Alzheimer's disease.
Education & Training
Washington University in St. LouisMSCI, Clinical Investigation, 2018 - 2020
Washington University/B-JH/SLCH ConsortiumFellowship, Memory and Aging, 2014 - 2015- University of TorontoResidency, 2009 - 2014
Queen's University at KingstonClass of 2009, MD- Queen's UniversityMSc, Neuroscience / Physiology, 2003 - 2006
Certifications & Licensure
FL State Medical License 2019 - 2026
MO State Medical License 2015 - 2020
American Board of Psychiatry and Neurology Neurology
Clinical Trials
- The ExTINGUISH Trial of Inebilizumab in NMDAR Encephalitis Start of enrollment: 2022 Mar 30
- Longitudinal Early-onset Alzheimer's Disease Study Protocol Start of enrollment: 2018 Apr 30
- COVID-19 Registry to Assess Frequency, Risk Factors, Management, and Outcomes of Arterial and Venous Thromboembolic Complications Start of enrollment: 2020 Mar 24
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Publications & Presentations
PubMed
- Longitudinal Evolution of Posterior Cortical Atrophy: Diagnostic Delays, Overlapping Phenotypes, and Clinical Outcomes.Dror Shir, Noah Lee, Stuart J McCarter, Vijay K Ramanan, Hugo Botha
Neurology. 2025-05-13 - The Clinical Trial Landscape in Autoimmune Encephalitis: Challenges and Opportunities.Hesham Abboud, Stacey L Clardy, Divyanshu Dubey, Jonathan Wickel, Gregory Scott Day
Neurology. 2025-04-22 - Evaluating pathogenicity of variants of unknown significance in APP, PSEN1, and PSEN2.Jacob A Marsh, Guangming Huang, Kevin Bowling, Alan E Renton, Ellen Ziegemeier
Neurotherapeutics. 2025-04-01
Press Mentions
Novel Blood Test Could Help Diagnose, Track Alzheimer’sApril 9th, 2025- Researchers Find Other Diseases May Mimic Rare Brain Disorder Linked to DementiaOctober 31st, 2022
- How I Coped with Losing My Father to a Rare Neurodegenerative DiseaseSeptember 13th, 2021
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Grant Support
- Bio-RaPID: Biomarkers and Rates of Progression In Dementia.MAYO CLINIC JACKSONVILLE2024–2029
- Rapidly Progressive Dementia: Moving Beyond CJDNational Institutes of Health2019–2023
Professional Memberships
- Member
External Links
- Anti-NMDA Receptor Encephalitis Foundationhttp://antinmdafoundation.org
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