Charging $3 for a 20-minute hospital visit is profiting from people's suffering, says Scott McGill.
The Wellingtonian's 9-year-old daughter is in Starship hospital for a heart operation.
Mr McGill said Auckland District Health Board's parking prices were "making money out of misery".
"The purpose of parking here is because you're visiting someone in hospital - you're not off having fun," he said.
"But there's nowhere else to park."