Dr Tyagi is known for his anterior cervical and lumbar microsurgical discectomy and craniovertebral junction surgeries .He is an exponent in treating cerebral aneurysm, excision of AVM malformation and all kind of spinal tumor surgeries with results comparable to the best international standards. He is an expert in the spinal instrumentation at all the levels from the cervico occipital to the Lumbosacral regions.

He pioneered functional stereotactic surgery programme at Apollo Hospital New Delhi and has done a large number of Deep Brain Stimulation surgeries and ablative surgeries. He is the first surgeon in India who used Image Fusion technique to localize the targets in the deep part of brain to do functional stereotactic surgeries.

Dr. Sudheer Kumar Tyagi is also known for Frameless Stereotactic Navigation work in cases of epilepsy caused by small lesions which are close to eloquent areas of brain. Stereotactic Radiosurgery (SRS) is another area in which he has done the largest number of cases at the Apollo Hospital New Delhi. He is actively involved in neurosurgical training and research work at Apollo Hospitals New Delhi

Dr. Sudheer Kumar Tyagi, born on 1st February 1966 is a renowned Neurosurgeon with more than 32 years’ experience in the field of Neurosurgery. He is known for his highly skilled and precise Neurosurgical work. Dr. Tyagi a medical graduate of prestigious King George’s Medical University (KGMU), Lucknow & has been trained in Neurosurgery at the premier neurosurgical institute in India, the All India Institute of Medical Sciences (AIIMS) New Delhi.

• Credit of performing more than 15,000+ Microscopic Brain & Spine Surgeries (update from 11,000 to 15,000)
• Ongoing Free of Cost Rural Medical Services in the native village in Muzaffarnagar (UP) for more than 32 years
• Promoter & vocal of Swach Bharat Mission, an Initiative of Govt of India. Have motivated & financially helped the local residents for building toilets in native village.
• Financially helped the local school in native village for building a Girls hostel.
• Support the whole life education of an Orphan Child thru a foundation.
• Awarded as a LEGEND in the field of NEUROSURGERY by Times of India in August 2017
• Awarded by Delhi Medical Association as VISHISHT CHIKTSA RATNA AWARD on Doctor’s Day in July 2015.
• Indian Medical Association (South Delhi) decorated with “Scroll of Honour” for the contributions in the field of Neurosurgery.