1. Minnesota


  1. Neurosurgery
  2. Radiology


  1. MD Universita di Bologna
  2. Research Fellowship - Cerebral Ischemia Department of Neurosurgery, Akademisch Ziekenhuis University Hospital
  3. Resident - Clinical Neurology Universita degli Studi di Ferrara
  4. Research Fellowship - Skull Base Surgery Center for Cranial Base Surgery, Presbyterian University Hospital
  5. Clinical Research Fellowship - Neurosurgery Ospedale Bellaria
  6. Research Fellowship - Cerebral Ischemia Cerebrovascular Research Lab, Department of Neurosurgery, University of Virginia
  7. Internship - General Surgery Department of Surgery, University of Virginia
  8. Junior Resident - Neurosurgery Department of Neurosurgery, University of Virginia
  9. Clinical Fellowship - Neuroendovascular Department of Neurosurgery, Millard Fillmore Hospital, State University of New York at Buffalo
  10. Senior Registrar - Neurosurgery Department of Neurosurgery, Derriford Hospital
  11. Chief Resident - Neurosurgery Department of Neurosurgery, University of Virginia
  12. Clinical Fellowship - Cerebrovascular Department of Neurological Surgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona


  1. American Board of Neurological Surgery

Academic rank

  1. Professor of Neurosurgery


  • Brain tumor surgery
  • Brain (cerebral) aneurysm surgery
  • Moyamoya disease surgery
  • Carotid stenosis
  • Arteriovenous malformations (AVMs)
  • Cavernous malformations
  • Dural arteriovenous (AV) fistulas
  • Spinal vascular malformations
  • Spinal dural fistulas


See a listing of publications on PubMed, a service of the National Library of Medicine.


See a description of research activities.