The Lady Cilento Children’s Hospital has assured patients they were never under any threat, after it was revealed a man had been posing as a doctor inside the facility last year.

Nicholas Brett Delaney stole credentials in order to gain access to the hospital, and was fined $3000 on Monday after it was discovered that he was not a real doctor.

Executive Director of the Brisbane Hospital, Dominic Tait, said Delaney did not have access to any of the clinical areas, medications or patients.