
Ernest Barthélemy, MD, MPH, MA
Chief of Neurosurgery
Assistant Professor of Surgery, Neurology, and Orthopedic Surgery
Global Health
Dr. Ernest J. Barthélemy is a neurosurgeon, global health scientist, and Chief of the Division of Neurosurgery at SUNY Downstate Health Sciences University. He subspecializes in trauma and acute care neurosurgery, and his clinical practice focuses on surgical care for acquired brain injury, degenerative spinal conditions, and cancer affecting the central nervous system.
Dr. Barthélemy is the founding director of the Downstate Global Neurosurgery Laboratory, which focuses on multidisciplinary investigations geared towards advancing health equity in acute care neurosurgery. He is also co-founder and co-director of the Downstate Global Neuroscience Initiative, which hosts annual symposia that prioritize advancing global neuro-health equity.
A Haitian-American native of Brooklyn, New York, Dr. Barthélemy completed his medical education and neurosurgery residency at the Icahn School of Medicine at Mount Sinai and subsequently completed post-residency fellowships in both clinical neurotrauma and in health equity at the University of California, San Francisco. From 2017 to 2019, he was a Paul Farmer Global Surgery Research Fellow at Harvard University, where he also obtained a Master of Public Health degree with concentrations in Global Health and Public Health Leadership.
Dr. Barthélemy is the founding president of the Society of Haitian Neuroscientists, a growing Haitian Diaspora organization with over 100 members in six countries that aims to advance neurological care and mental health in all Haitian communities. He is also the 2024-2025 Chair of the Global Neurosurgery Committee of the American Society of Black Neurosurgeons, a member of the Global Neurosurgery Committee of the World Federation of Neurosurgical Societies for the 2024-2026 period, and a member of the Mission: BRAIN Medical Board.
Education
- Undergraduate: New York University
- Advanced Degree: Columbia University-Teachers College
- Advanced Degree: Harvard School of Public Health
- Medical School: Icahn School of Medicine at Mount Sinai
- Internship: Icahn School of Medicine at Mount Sinai, Department of Neurological Surgery
- Residency: Icahn School of Medicine at Mount Sinai, Department of Neurological Surgery
- Fellowship: University of California San Francisco, Department of Neurological Surgery; Harvard Medical School
Research Interests
- Traumatic Brain Injury
- Global Health Equity
Dr. Barthelemy is a general and trauma-subspecialized neurosurgeon whose practice spans a broad spectrum of acute and chronic disorders of the brain and spine. His clinical interests include:
- Acute care surgery for brain injury, including:
- Subdural Hemorrhage
- Epidural Hemorrhage
- Intraparenchymal Brain Hemorrhage
- Skull fracture
- Stroke
- Acute care surgery for spinal injury, including:
- Spinal fractures and dislocations
- Spinal cord injury
- Spinal cord compression
- Cauda Equina Syndrome
- Multi-modality monitoring for the injured brain
- Neurocritical care
- Degenerative diseases of the spine including:
- Disc herniation (cervical, thoracic and lumbar)
- Spinal stenosis (cervical, thoracic and lumbar)
- Cervical spondylosis with myelopathy
- Cervical radiculopathy
- Lumbar radiculopathy
- Adult spinal deformity
- Spine tumors
- Brain and Skull base tumors:
- Metastatic tumors
- Meningiomas
- Gliomas
- Pituitary Tumors
- Epilepsy
- Hydrocephalus
Dr. Barthelemy’s practice includes an array of minimally invasive spine surgery techniques that provide targeted treatment of spinal disorders while minimizing post-operative pain and optimizing recovery and return to function.
Patient Appointments
To schedule a consultation with Dr. Barthelemy, please call 718-270-7207