Perth doctor has been banned from practising medicine after admitting to professional misconduct which included sexualised behaviour towards a patient, to whom he also over-prescribed potent medication. In a judgement published this week, the State Administrative Tribunal found the conduct of Gregory Duck amounted to “serious breaches” of the medical code for doctors, including “incompetence, poor medical practice and sexualised behaviour”. The tribunal was told Gregory Duck started seeing the woman in December 2012 when he obtained her history with methadone use. He then formed an inappropriate relationship with her that included taking her out to dinner, buying her gifts such as lingerie, which he photographed her in, and having consultations with her at his home. On one occasion the woman went to a hotel room where he was staying and after she took heroin and collapsed, Dr Duck did not call an ambulance, and instead stayed with her, alone in the room. The tribunal was told that on about 50 occasions over an 18-month period, Dr Duck prescribed the woman varying amounts of medications including Xanax and Valium. In some instances he wrote the prescriptions in the woman’s absence, and after paying for and collecting the drugs, kept them in a locked drawer in office to give to her.