An Auckland doctor says it would be easy for an unregistered GP to masquerade as fully licensed and get a job treating patients.
Marcus Hawkins, a Botany GP, blames the loophole on weak employment systems and the Medical Council's not requiring photo identification of doctors.
Dr Hawkins passed his medical degree in Britain and worked in New Zealand hospitals for a decade before seeking locum work in general practices for five years. He is now a self-employed GP.
He said none of the clinics that employed him as a locum asked him for details of his New Zealand medical registration or annual practising certificate, although he acknowledged they could have checked with the council without his knowledge.
Michael Clarke, of the Beachlands Medical Centre, one of Dr Hawkins' former employers, said it was routine to check these details, so he would be surprised if this wasn't done in Dr Hawkins' case.