His clinical interests include: cerebrovascular surgery; endovascular, microsurgical and minimally invasive skull base techniques to treat aneurysm, AVM, dural and spinal fistulae, carotid disease, brain tumors, meningiomas, NF2, acoustic neuroma, skull base diseases, stroke and cavernoma; carotid stenting and endarterectomy; intracranial and vertebral artery angioplasty and stenting.