Voluntary euthanasia advocate Dr Philip Nitschke is being investigated by the Australian Health Practitioner Regulation Agency, which supervises the registration of doctors qualified to practice.
The ABC understands AHPRA has launched the action as a result of an ABC 7.30 investigation.
Dr Nitschke admits he supported Perth man Nigel Brayley in his decision to commit suicide, despite knowing he was not terminally ill and was only 45 years old.
Mental health groups Beyond Blue and the Black Dog Institute believe Dr Nitschke had an obligation to recommended psychiatric help to Mr Brayley, but Dr Nitschke said it was not his role to intervene.
The AHPRA, which will conduct the investigation, provides support to the Medical Board of Australia in regulating the medical profession.
The board’s primary role is to protect the public by ensuring only medical practitioners who are suitably trained and qualified to practise in a competent and ethical manner are registered.
The ABC understands an investigator has been appointed under the Health Practitioner Regulation National Law.
The AHPRA says it does not make public comments about ongoing investigations and does not comment on individual matters.
Dr Nistchke has been contacted for comment, but told the weekly medical industry magazine Australian Doctor he was informed by AHPRA on Tuesday that he would be investigated.
Exit International would not provide the ABC with a comment and said Dr Nitschke will hold a press conference on Monday.
Dr Nitschke’s medical registration is up for renewal in September.