Dr. Sudheer Kumar Tyagi is a leading Neurosurgeon in India, backed by more than 22 years of experience in the field of Neurosurgery. He is a highly skilled surgeon with educational qualification from renowned medical institutions of India and trained in specialized advance courses under reputed surgeons from internationally acclaimed institutions. Dr. Tyagi has performed over 4000 neurosurgeries in his illustrious career, and has a special focus on anterior cervical, lumbar microsurgical discectomy, clipping of aneurysm, excision of AVM malformation and craniovertebral junction surgeries. He holds expertise in the surgeries for brain tumor, skull base tumor, and functional stereotactic radiosurgery along with epilepsy surgeries, Spinal instrumentation. Dr. S K Tyagi, to his credit, is the first surgeon in India to use Image Fusion technique to localize the targets in the deep part of brain to perform functional stereotactic surgeries. Further to his list of accomplishments, he started functional stereotactic surgery programme at Apollo Hospital, New Delhi and specializes in Frameless Stereotactic Navigation in the cases of epilepsy, caused by small lesions in the brain.