This link will give you all the salary bands for house officers in NZ (scroll down)
http://www.waikatodhb.govt.nz/page/pageid/2145849538
It is from one specific district health board but is taken from the latest collective agreement so will be the same across NZ.
If you are interested in working as a medic in NZ I recommend you speak to NZ Medics
http://www.nzmedics.co.nz who recruit internationally for doctors in NZ and are a not for profit (i believe they are funded from the district health boards).