Rob Campbell is out as the Chair of Te Whatu Ora, given the sack by Health Minister Ayesha Verrall.
It follows Campbell publicly criticising National's Three Waters policy, and leader Chris Luxon.
Verrall says he broke the Code of Conduct he signed when appointed to the role, and she no longer has confidence in his ability to exercise political neutrality.
Rob Campbell says he hasn't decided whether he'll challenge the decision.
"We took the day to send a measured response, which offered apologies and a way forward, and that was rejected out of hand."
Campbell says while Luxon accepted an apology, Verrall refused.
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