An Australian doctor has appeared in a propaganda video for Islamic State, spruiking its health services and urging other Muslim health professionals to join him.

The video, published on Friday and circulated by IS-linked social media accounts, shows a man calling himself Abu Yusuf explain that he travelled from Australia to the IS stronghold of Raqqa, Syria, to use his medical skills to help others.

Fairfax Media has confirmed the man is Tareq Kamleh, a registered doctor who is believed to have worked up until recently in the health system in Perth.

"I saw this as part of my jihad for Islam, to help the muslims ummah (community) in the area that I could, which is the medical field," Dr Kamleh says in an Australian accent.