Here's a selection of links that may be helpful:

• Maori Health - http://www.maorihealth.govt.nz
• Maori Health Provider lists (North and South Islands) - http://www.maorihealth.govt.nz/moh.nsf/menuma/Maori+Health+Providers
• Ministry of Health - http://www.moh.govt.nz
• Nga Manukura o Apopo - http://www.ngamanukura.co.nz
• Te Puni Kokiri - http://www.tpk.govt.nz
• Whānau Ora - http://www.tpk.govt.nz