I'd go with Mel's recommendation
But I'll just say that I had Denise Johnson ( denise@djmidwifery.co.nz) for the short time I was pregnant and she was so lovely. After I'd found out about my missed miscarriage, she personally came over to my house with some scan photos from the first scan ,and had a beautiful chat with me.
I recently emailed her asking for a GP recommendation in Takapuna area (that has an interest in obstetrics if possible) and she gave me some contacts and also said she'd like to meet up for lunch to give me pre conception advice. She is really lovely.
Phantom from the October thread has just used her so she could tell you more about her