The Medical Council and the Ministry of Health are investigating an Invercargill-based urologist after it was discovered that he's been practising illegally.
Patients treated by Sanjan Bhatia since 2007, when he was found guilty of professional misconduct by the Health Practitioners' Disciplinary Tribunal, are being encouraged to have their care reviewed by a GP.
Medical Council chairman John Campbell says Dr Bhatia did not comply with conditions imposed on him at that time, and has not had a practising certificate since last December.
He says the council will review its monitoring processes to ensure such a situation doesn't arise again.
In February 2007 the tribunal found Dr Bhatia guilty of professional misconduct relating to his care of a Southland woman in 2004.
It then imposed conditions on his practice, including that he work under the supervision of another urologist.
When the Medical Council found he was not complying with those conditions, it refused to renew his practising certificate.