Hi,
here's a link:
Healthcare salary guide - Trade Me Jobs
For public hospitals - most employ their staff under a collective agreement, as agreed with the union. Negotiable is your starting rate only. Commonly, they categorise into Junior = Rotational and Senior staff. We do not have a structured scale here, like in Britain.
The New Zealand Public Service Association - Te Pukenga Here Tikanga Mahi
In private practice, it all depends on demand, your postgrad courses/ masters etc. and negotiating skills.
Best indication will be the payment offers on job websites. Salaries are rather secretly discussed in NZ ...
Hope this helps a little.
Cheers,
Fyzzio