Some health professionals are describing Te Whatu Ora's data on emergency department wait times as "gobbledygook", saying the authority is either fudging the numbers, or has made a huge error.
One example is Northland where monthly stats show in November and December, more than 99 percent of people who attended their Emergency Departments were seen within the target time of six hours.
That's 20 percent better than previous months.
It's the same story in the Southern Region and Whanganui, where, according to the figures, they were all of a sudden reaching their targets too.
A closer look at the figures in these three regions show the number of people presenting at Emergency Departments is down by thousands for those months.
For example in Northland in October, close to 5000 people were seen at ED's - in November it was just 361 and in December 318.
At the other extreme, in just one month attendence at West Coast hospitals ballooned from 700 to more than 8000.
That's a 1144 percent increase in emergency department use.
National Party health spokesperson Shane Reti said the numbers are either wildly optimistic or simply can't be real.
Te Whatu Ora admitted there are some errors in its official figures on emergency department waiting times.
The health agency's spokesperson Pete Watson told Morning Report the waiting time data had been merged from 20 different districts which collected it in different ways and it is as accurate as it can be at the moment.
