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Brian C. Mac Grory

Associate Professor of Neurology
Neurology, Stroke and Vascular Neurology
40 Duke Medicine Circle, Durham, NC 27708
Office hours 9AM-6PM Monday-Friday  

Overview


Dr. Brian Mac Grory, MB BCh BAO, MHSc, MRCP, FAHA, FANA is an Associate Professor of Neurology & Ophthalmology at the Duke University School of Medicine and a Staff Neurologist at Duke University Medical Center. He received his medical degree from University College Dublin in Dublin, Ireland in 2011. After an internship at St. Vincent's University Hospital, Dublin, he completed a neurology residency and vascular neurology fellowship at the Yale School of Medicine/Yale-New Haven Hospital in New Haven, Connecticut. Upon completion of his training, he served for 3 years on the faculty of Brown University/Rhode Island Hospital before being recruited to Duke University in 2020.

His clinical practice encompasses both vascular and general neurology in the emergency, inpatient, outpatient, and telemedicine settings. He has a particular clinical interest in central retinal artery occlusion (CRAO or "eye stroke") and has developed a center of excellence for the treatment of this condition at Duke. He led the development of the first ever American Heart Association (AHA) scientific consensus statement on the management of CRAO which was endorsed by six professional medical societies in the United States representing neurology, neurosurgery, cardiology, ophthalmology, neuro-ophthalmology, and optometry.

Dr. Mac Grory has published over 150 peer-reviewed scientific articles appearing in JAMABritish Medical Journal, Circulation, StrokeAnnals of Neurology, JAMA Neurology, and Neurology. His research on retinal vascular disease is funded by the National Institutes of Health/National Heart, Lung, and Blood Institute (K23 HL161426), the AHA (23MRFSCD1077188 & 25GLP1450119), and the Duke Office of Physician-Scientist Development (FRCS #2835124). Additionally, he serves as Clinical Lead for the Get With The Guidelines-Stroke Data Analytic Program at the Duke Clinical Research Institute (DCRI) and Associate Program Director for the vascular neurology fellowship program at Duke. His research has been recognized with the Stroke Progress and Innovation Award, Stroke Care in Emergency Medicine Award, and Early Career Investigator Award from the AHA/American Stroke Association and the Young Physician-Scientist Award from the American Society for Clinical Investigation. He is a member of the AHA's Stroke Systems of Care Advisory Group, the Stroke Emergency Neurovascular Care Committee, and the Royal College of Physicians of the United Kingdom (MRCP(UK)). 

Current Appointments & Affiliations


Associate Professor of Neurology · 2022 - Present Neurology, Stroke and Vascular Neurology, Neurology
Associate Program Director in the Department of Neurology, Vascular Neurology Fellowship · 2021 - Present Neurology, Clinical Science Departments
Associate Professor in Ophthalmology · 2022 - Present Ophthalmology, Clinical Science Departments
Associate Professor of Biomedical Engineering · 2024 - Present Biomedical Engineering, Pratt School of Engineering
Member in the Duke Clinical Research Institute · 2021 - Present Neurology, Clinical Science Departments
Member in the Duke Clinical Research Institute · 2025 - Present Duke Clinical Research Institute, Institutes and Centers

In the News


Published May 12, 2021
Sudden, Painless Vision Changes Require Emergency Care

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Recent Publications


Calcitonin Gene-Related Peptide Inhibitors and Cardiovascular Events in Patients With Migraine: A Retrospective, Observational Cohort Study.

Journal Article Neurology · February 10, 2026 BACKGROUND AND OBJECTIVES: Calcitonin gene-related peptide (CGRP) inhibitors have entered widespread use in the United States for treatment of migraine, but data on their cardiovascular risk profile are lacking. The objective of this study was to determine ... Full text Link to item Cite

Race- and Ethnicity-Specific Hospital Arrival and Emergency Medicine Service Activation Times by US State for Ischemic Stroke.

Journal Article J Am Heart Assoc · January 6, 2026 BACKGROUND: Delayed hospital arrival after 4.5 hours of stroke onset excludes patients from intravenous thrombolytic therapy. In the United States, prehospital triage is regulated by each state. Understanding race- and ethnicity-specific prehospital delays ... Full text Link to item Cite

Association between first anticoagulant prescription and embolic and hemorrhagic events among older adults with atrial fibrillation.

Journal Article J Intern Med · January 2026 BACKGROUND: The impact of first prescription of oral anticoagulation on ischemic stroke and major bleeding events among Medicare beneficiaries with atrial fibrillation (AF) is not known. METHODS: A retrospective, observational, cohort study was performed b ... Full text Link to item Cite
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Recent Grants


Induced Suppression of Platelet Activity in Aneurysmal SAH Management-2 (iSPASM-2)

Clinical TrialCo-Principal Investigator · Awarded by National Institutes of Health · 2025 - 2030

Cardioembolism as a Mechanism of Central Retinal Artery Occlusion

ResearchPrincipal Investigator · Awarded by National Heart, Lung, and Blood Institute · 2022 - 2027

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Education, Training & Certifications


Duke University · 2023 M.H.S.
University College Dublin (Ireland) · 2011 M.B.B.Ch.

External Links


Clinical Profile