Marcus is a Respiratory and Sleep Disorders physician with expertise in the management of sleep disorders such as sleep apnoea. He also has a strong interest in the diagnosis and management of disorders of excessive daytime sleepiness including narcolepsy and idiopathic hypersomnia. He also has an interest in the assessment and management of parasomnias and sleep related movement disorders. Marcus is based at Epworth Richmond and he admits patients to the sleep labs at both Epworth Richmond and and Epworth Camberwell. Marcus is heavily involved in medical education, particularly of physician trainees, with a Masters degree in Medical Education. He is a member of the Australasian Sleep Association and represents the ASA on several committees. Marcus completed his medical degree at the University of Melbourne before being granted his fellowship in Respiratory and Sleep Medicine with the Royal Australasian College of Physicians. Marcus completed his Masters degree in Medical Education through Monash University.