Health practitioners were reported for alleged misconduct at almost double the rate in the last year, according to Australia's health regulator.

Botched procedures, inappropriate sexual relationships with patients, and wrongfully issuing vaccination exemption certificates to people were among serious breaches resulting in referrals to tribunals.

Nationwide, there were 344 referrals made in the 2021-22 financial year, recorded by the Australian Health Practitioner Regulation Agency.

This was up from 180 cases in the previous year.

A spokeswoman for AHPRA said a Victorian-based practitioner was found to have provided vaccine exemptions not in accordance with government legislation.

Victorian practitioners lodged the highest number of appeals (37) in tribunals about national board decisions in the past year, with Queensland based professionals lodging the second highest amount (21).

Of the 187 matters decided by a tribunal, more than 98 per cent resulted in disciplinary action for the health care worker.

One practitioner was disqualified for seven and a half years after being found to have sexually assaulted a patient.