Neurosurgery, spine, brain tumors, epilepsy, peripheral nerve surgery. Pediatric neurosurgery: intracranial endoscopy, craniofacial surgery, brain tumors, epilepsy, and congenital cranial and spinal anomalies. Skull Base Neurosurgery: Microscopic and Endoscopic Skull Base Approach to Skull Base and Pituitary Tumors management of cervical and lumbar disc disease , minimal invasive spine surgery