Professor Geoff Nicholson is an endocrinologist completing his medical degree in 1974 at the University of Western Australia and completed his residency at Sir Charles Gairdner and Royal Perth Hospital in 1977. Geoff was admitted to fellowship of the Royal Australian College of Physicians in 1984 and completed a Ph.D. at the University of Melbourne in 1988.

He now consults from his private rooms and holds accreditation at St John of God Geelong Hospital and University Hospital – Geelong.