"Parking taxes at hospitals punish those who are ill and may well be on benefits.
"The last thing that a patient should have to worry about if they are attending for treatment is whether there is going to be a penalty notice waiting for them when they return to their vehicle.
"Often patients won't know how long their treatment will last and therefore how much to put in the meter."
He said modest charges might make sense in large city hospitals, where good public transport was available. "But we think for places like Northland, where patients often travel considerable distances, hospital parking fees are a nasty revenue gathering tool, which should be abolished.
"When New Zealanders are ill or suffering from a family emergency, the last thing they should have to worry about is whether or not they have enough spare change for the DHB's carpark," Mr Williams said.
NDHB chief finance officer Meng Cheong said the DHB recognised that socioeconomic factors affected many people in our community and offered staff who earned $18 or less an hour the opportunity to apply for an exemption.
Exemptions are also granted for chaplains, renal patients who drive themselves to their appointments, blood donors, people having chemotherapy, emergency services vehicles, courier and delivery vehicles, rural health shuttles, bicycles and motorcycles, and registered volunteers.
Mr Cheong said exemptions might also be granted for parents of seriously ill children, while immediate family of patients staying more than three weeks would be charged one week's parking.
Charges apply from 9am to 5pm, Monday to Friday.