Hospitals in Tairāwhiti and Hawkes Bay have managed to remain in operation despite power and internet outages.
Gisborne Hospital only has a week of fuel to run its generators, but is able to access more.
In Hastings, all elective surgeries have been cancelled - but Hawkes Bay Hospital is still open for urgent care.
Te Whatu Ora interim national medical director Doctor Pete Watson spoke to Corin Dann.
