Questions are being raised as to where the blame lies for issues within Health New Zealand. 

The board is being replaced with a commissioner as the agency was found to be overspending at the rate of around $130 million a month. 

Back office staff numbers have increased significantly in recent years. 

Former Health New Zealand Chair Rob Campbell told Mike Hosking there's a possibility the budget was never right from the start. 

He suspects the original budgeting appropriations were never adequate, and it's been impossible to manage. 

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