He completed specialist Fellowship training in Neurovascular Surgery working with Professor Michael Morgan in Sydney, Australia, one of the world's leaders in surgery for brain AVM. His practice encompasses cerebral aneurysms, arteriovenous malformations of the brain and spinal cord, cavernoma, cerebral revascularisation, Moyamoya disease, brain haemorrhage and general neurosurgery including tumours of the brain and spine. Neurovascular referrals are received from around the United Kingdom and internationally.
He is part of the multidisciplinary team at Guy's Hospital which supports the nationally commissioned neurofibromatosis service and Von Hippel-Lindau Disease clinic. His academic appointment is as Visiting Clinical Senior Lecturer to the Institute of Psychiatry, King's College London. He has been privileged to speak and teach on neurosurgery around the world.
Since his appointment as a consultant Mr Walsh has been involved in the training of neurosurgeons. He served as the departmental training lead at King's College Hospital from 2007 to 2017 an during that time was a member of the South Thames Training committee and member of the national selection process panel. He became pan-London early years training program director until 2014 when he led a successful bid by King's Health Partners to become lead providers for neurosurgical training in the South Thames region. He then serve as training program director until demitting that post in 2017. The same year saw appointment to the neurosurgery specialist advisory committee of the joint committee surgical training.
Mr Walsh was elected to the Chair of the British Neurovascular Group from February 2017. He has served two terms as an elected individual member's delegate to the European Assosciation of Neurosurgical Societies.
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