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Gregg S. Day, M.D.

  1. Neurologist
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Departments

Specialty Groups

Location

  1. Jacksonville, Florida

Languages

English

Existing patients

Appointments

Gregory S. Day, M.D., is a neurologist, with special interest in the diagnosis and management of Alzheimer disease and related causes of dementia. He has additional expertise in the evaluation and treatment of patients with the following rare conditions:

  • Rapidly progressive dementia
  • Autoimmune (inflammatory) encephalitis
  • Reversible causes of dementia
  • Early-onset dementia

In addition to clinical work, Dr. Day is active in clinical research. He conducts observational studies and clinical trials in Alzheimer disease, rapidly progressive dementia, autoimmune encephalitis, and autoimmune-causes of cognitive impairment. He has authored more than 70 indexed scientific publications, and is an active member of the American Academy of Neurology where he serves on a number of committees focused on improving neurology practice. His research is sponsored by the National Institute on Aging, National Institute of Neurological Disorders and Stroke, Alzheimer's Association, and Chan-Zuckerberg Initiative.

  1. Alzheimer's disease
  2. Autoimmune encephalopathy
  3. Corticobasal syndrome
  4. Creutzfeldt Jakob disease
  5. Dementia
  6. Encephalitis
  7. Frontotemporal dementia
  8. Lewy body dementia
  9. Mild cognitive impairment
  10. NMDA receptor antibody encephalitis
  11. Normal pressure hydrocephalus
  12. Posterior cortical atrophy
  13. Primary progressive aphasia
  14. Progressive supranuclear palsy
  15. Wernicke-Korsakoff syndrome
  1. Lumbar puncture
  • Rapidly progressive dementia
  • Reversible dementias
  • Autoimmune dementias / autoimmune encephalitis
  • Creutzfeldt-Jakob disease
  • Alzheimer disease and other dementias
  • Early-onset dementias
  1. 2020
    Master of Science - Clinical InvestigationWashington University in St. Louis
  2. 2018
    Graduate Certificate - Clinical InvestigationWashington University in St. Louis
  3. 2015
    Fellowship - Memory and AgingWashington University in St. Louis
  4. 2014
    Residency - Adult NeurologyUniversity of Toronto
  5. 2009
    MDQueen's University
  6. 2006
    MSc - Neuroscience StudiesQueen's University
  7. 2003
    BS - Life Sciences (Research Stream)Queen's University

Certifications

  1. 2017
    NeurologyAmerican Board of Psychiatry and Neurology

Awards and honors

  1. 2024
    Fellow of the American Neurological AssociationAmerican Neurological Association
  2. 2023
    Top Performing Provider Patient Experience AwardMayo Clinic
  3. 2022
    Top Performing Provider Patient Experience AwardMayo Clinic
  4. 2021
    2020 Mayo Clinic Experience Award Mayo Clinic
  5. 2021
    Fellow of the American Academy of NeurologyAmerican Academy of Neurology
  6. 2019
    Sven Eliasson Award for Teaching Excellence; Department of NeurologyWashington University School of Medicine
  7. 2019
    Emerging Leaders ProgramAmerican Academy of Neurology
  8. 2018
    Alene & Meyer Kopolow AwardWashington University, Barnes Jewish Hospital Foundation
  9. 2018
    Travel FellowshipAmerican Neurological Association
  10. 2017
    Travel FellowshipAlzheimer's Association International Conference
  11. 2016
    Fellow Scholarship to the Annual MeetingAmerican Academy of Neurology
  12. 2015
    Distinguished Reviewer of the YearCanadian Journal of Neurological Sciences
  13. 2015
    Travel FellowshipAlzheimer's Association International Conference
  14. 2014
    André Barbeau Memorial PrizeCanadian Neurological Society
  15. 2014
    J.T. Marotta Teaching Award University of Toronto
  16. 2013
    Chief ResidentUniversity of Toronto
  17. 2013
    John Wherrett AwardUniversity of Toronto
  18. 2013
    Future Leader Award in DementiaPfizer
  19. 2013
    Top Submission AwardHealth Science Inquiry Journal
  20. 2012
    Joseph M West Family Memorial FundUniversity of Toronto

Professional memberships

  1. 2023 - present
    Co - ChairANA
  2. 2023 - present
    ChairpersonAmerican Neurological Association
  3. 2022 - present
    ChairClinical Research Operations Group
  4. 2022 - present
    Co-ChairANA
  5. 2022
    Co-ChairAmerican Neurological Association
  6. 2021 - present
    Vice ChairResearch Committee, Department of Neurology
  7. 2021 - present
    ChairNeuroscience Research Committee, Department of Neurology
  8. 2021 - present
    DirectorNeurology, Staffing and Scheduling Committee, Division Committees
  9. 2021 - present
    FellowAmerican Academy of Neurology
  10. 2021 - present
    Committee ChairAmerican Academy of Neurology
  11. 2020 - present
    Committee ChairAmerican Academy of Neurology
  12. 2019 - present
    MemberCanadian Neurological Society
  13. 2018 - present
    MemberAmerican Neurological Association
  14. 2018 - present
    MemberAlzheimer’s Association International Society to Advance Alzheimer’s Research and Treatment
  15. 2017 - 2019
    Medical Advisory Board - MemberAlzheimer's Association, Greater Missouri Chapter
  16. 2016 - 2020
    Committee MemberAmerican Academy of Neurology
  17. 2016 - present
    Committee MemberWashington University School of Medicine
  18. 2015 - 2021
    Committee MemberAmerican Academy of Neurology
  19. 2007 - present
    MemberAmerican Academy of Neurology

Publications

Research activities

See a description of research activities.