Associate Professor Dr. Kamal Azrin Abdullah @ Kalai Arasu Muthusamy is a highly respected Consultant Neurosurgeon at UM Specialist Centre, with subspecialty expertise in Functional Neurosurgery and Neuromodulation. A graduate of the University of Malaya (MBBS, 1995), he went on to complete his neurosurgical training in 2002 before pursuing advanced fellowship training at the prestigious University of Oxford under renowned experts in movement disorders and functional neurosurgery. His Oxford DPhil and international exposure place him among the leading specialists in his field. At UMSC and UMMC, Dr. Kamal heads the Neurosurgical Intensive Care Unit and the Functional & Neuromodulation Unit, where he performs a wide range of neurosurgical procedures. He is especially recognised for his work in Deep Brain Stimulation (DBS) surgery for Parkinson’s disease, dystonia, epilepsy, and other complex movement disorders—making UMSC one of the leading centres for DBS in the region. In addition to movement disorders, his expertise also covers brain tumours, hydrocephalus, and trauma surgery. An active researcher, he focuses on advancing the understanding of Parkinson’s symptoms and neural connectivity, ensuring that his patients benefit from the latest medical science. With a strong blend of international training, leadership in high-complexity neurosurgery, and a proven track record in advanced procedures, Dr. Kamal stands out as a trusted and sought-after neurosurgical expert.