Upon graduating high school, Dr Alsahli was awarded the King Fahad scholarship to study medicine in New Zealand. He completed his medical degree in Otago University. He became interested in Neurosurgery after working in Christchurch Hospital as a student and later as a house officer. He joined the Macquarie Neurosurgery team and enrolled in the Master of Surgery degree in 2013. Since joining the team, Khalid's interest in neurosurgery has grown even further due to the academic atmosphere of the practice, and the advanced skills that the neurosurgical consultants possess at Macquarie Neurosurgery.