So I took a look at this, to check that my doctor wasn't on the list :-) But what there seems to be very few "regular GPs" there at all... https://www.covidplanb.co.nz/our-posts/gps-support-covid-plan-b/

Is this the same Shane Chafin, whose other opinions apparently won him a call from the constabulary? https://waikanaewatch.org/2019/05/24/the-jacinda-governments-persecution-of-donald-trump-supporters-has-involved-at-least-one-american-living-here/

And here's Tessa Jones, who offers such chelation therapy is a member of the American Academy of Anti-aging and Regenerative Medicine (one anti-aging strategy is not dying of Covid, but each to their own) https://www.karangahealth.co.nz 

The American Academy of Anti-aging and Regenerative Medicine has a (shall we say) interesting Wikipedia page https://en.wikipedia.org/wiki/American_Academy_of_Anti-Aging_Medicine

You be the judge I guess. (But it sounds like in this situation an actual Judge was the, um, judge)

Here's Dr René De Monchy at The Life Clinic, alongside a couple of homeopaths (and heilkunsts) https://www.thelifeclinic.co.nz 

I'll stop here, but I googled a bunch of these people and only a handful looked like mainstream science-based practitioners. Which is fine, it's a free country. But the Plan B schtick is that they are hard-nosed, clear-eye evidence-driven realists. But these guys? Yeah nah.