Wellington health bosses react to overhaul that will see DHBs abolished 20 Apr, 2021 11:18 PM 4 minutes to read All of New Zealand's 20 District Health Boards will be replaced by one, single national health body responsible for the running of all hospitals, the Government has revealed. All of New Zealand's 20 District Health Boards will be replaced by one, single national health body responsible for the running of all hospitals, the Government has revealed. NZ Herald Wellington DHBs have reacted to the news of the biggest health system shake-up in a generation, which will see their structure changed significantly from July next year. New Zealand's 20 district health boards (DHBs) will be replaced by one national body, Health New Zealand, alongside a Māori health authority.