1. Residencies & Fellowships

Neuroendovascular Surgery Fellowship at The Mount Sinai Hospital

The Neuroendovascular Surgery Fellowship Program at The Mount Sinai Hospital is one of the first to be accredited by the Committee on Accreditation of Subspecialty Training. As the largest program in New York City, it advances neuroendovascular medicine by training the next generation of physicians in neurological diseases. With a focus on neurovascular pathology, each fellow is provided broad exposure to all aspects of adult and pediatric neuroendovascular surgery, including the treatment of strokes, aneurysms, arteriovenous malformations and arteriovenous fistulas of the brain, central nervous system tumors, occlusive vascular diseases, revascularization, traumatic injury, maxillofacial vascular malformations, and spinal compression fractures.

On average, over 2,200 neuroendovascular procedures are performed each year at Mount Sinai Health System, including 300 acute stroke interventions, the cornerstone of the Neuroendovascular Fellowship. Our program also supports training and experience in clinical research, including participation in cutting-edge, multi-center trials with our Academic Research Organization (ARO), allowing our fellows to develop the skills they need to conduct their own independent research.

Mount Sinai’s Neuroendovascular Fellowship Program also enjoys collaborative relationships with nationally recognized programs in neurosurgery, neurology, neuroradiology, otolaryngology, cardiology, interventional cardiology and vascular surgery, and pediatrics, all of which result in excellent opportunities for interdisciplinary clinical care, research, and education.

Our faculty and fellows are currently participating in several randomized, multicenter clinical trials relating to acute stroke, aneurysms, and arteriovenous malformations. Our fellows are trained on all protocols and serve as sub-investigators on these clinical trials. They have access to patient databases, allowing for both independent prospective and retrospective studies. Basic science opportunities are also available within laboratories in Mount Sinai Health System and the Icahn School of Medicine at Mount Sinai.

Our program is limited to candidates who have received an MD from an accredited domestic or foreign institution. Fellows will only be accepted on a full-time basis, and they must be citizens or permanent residents of the United States at the time of their appointment.

Our faculty and fellows are currently participating in several randomized, multicenter clinical trials relating to acute stroke, aneurysms, and arteriovenous malformations. Our fellows are trained on all protocols and serve as sub-investigators on these clinical trials. They have access to patient databases, allowing for both independent prospective and retrospective studies. Basic science opportunities are also available within laboratories at The Mount Sinai Hospital and the Icahn School of Medicine at Mount Sinai.

Our program is limited to candidates who have received an MD from an accredited domestic or foreign institution. Fellows will only be accepted on a full-time basis, and they must be citizens or permanent residents of the United States at the time of their appointment.

Candidates should additionally be trained in one of the following:

  • Neurosurgery residency
  • Neurology residency, plus either stroke or critical care fellowship
  • Radiology residency plus neuroradiology fellowship

Our candidates are selected based on their commitment to an academic career in disease-oriented research, outstanding academic and research record, personal statement, and letters of recommendation. A curriculum vitae or bibliography, as well as at least three letters of recommendation, should be sent with other materials to Johanna T. Fifi, MD, Program Co-Director.

The fellows for 2023-24 are as follows:

Joseph Yoon, MD
MD: Rosalind Franklin University of Medicine & Science, Chicago Medical School
Neurology Residency: Harvard Medical School, Brigham & Women’s Hospital, Massachusetts General Hospital
Neurocritical Care Fellowship: Icahn School of Medicine at Mount Sinai

Guan (Phil) Zhe, MD, MSCR
MD: University of Michigan Medical School
MSCR: University of Michigan Medical School
Diagnostic Radiology Fellowship: University of Wisconsin Hospitals and Clinics
Neuroradiology Fellowship: NYU Langone Health

Jonathan Sisti, MD
MD: Columbia University, College of Physicians and Surgeons
Neurosurgery Residency: New York Presbyterian Columbia University Medical Center
Neuroendovascular Fellowship: New York Presbyterian Columbia University Medical Center

Meet the Director

Our Faculty

Our core faculty provide exceptional neuroendovascular training in both clinical care and research, ensuring that your fellowship experience is collaborative and comprehensive.

Alejandro Berenstein, MD
Alejandro Berenstein, MD
PROFESSOR | Neurosurgery
PROFESSOR | Pediatrics
Christopher P Kellner, MD
Christopher P Kellner, MD
ASSOCIATE PROFESSOR | Neurosurgery
Hazem Shoirah, MD
Hazem Shoirah, MD
ASSISTANT PROFESSOR | Neurosurgery
ASSISTANT PROFESSOR | Diagnostic, Molecular and Interventional Radiology
ASSISTANT PROFESSOR | Neurology
Tomoyoshi Shigematsu, MD, PhD
Tomoyoshi Shigematsu, MD, PhD
ASSISTANT PROFESSOR | Neurosurgery
ASSISTANT PROFESSOR | Diagnostic, Molecular and Interventional Radiology
Michael Travis Caton, MD
Michael Travis Caton, MD
ASSISTANT PROFESSOR | Neurosurgery
Thomas J Oxley, MD, PhD
Thomas J Oxley, MD, PhD
INSTRUCTOR | Neurosurgery
Joshua B Bederson, MD
Joshua B Bederson, MD
PROFESSOR AND SYSTEM CHAIR | Neurosurgery
PROFESSOR AND SYSTEM CHAIR | Artificial Intelligence and Human Health