Damon Anderson, 48, who was in custody for breaching his home detention, spent nine days on the run after a daring escape from the hospital on December 23.
Video footage showed Anderson shimmying down a pipe on the outside of the building. Corrections confirmed he was handcuffed and wearing a GPS monitor at the time.
It was the second time a prisoner had escaped from Corrections custody at the hospital inside a month.
In November, a 25-year-old man assaulted two officers before carjacking a vehicle from the hospital carpark. He was arrested later that day.
Spring Hill Corrections Facility acting general manager Alan Lamb said any escape was unacceptable and confirmed one employee had left the organisation and another received a final written warning following last year's bids for freedom.
He said staff have had extra training on managing prisoner escorts and Corrections would look at changing procedures once its investigations into the escapes were complete.
Meanwhile, a prisoner remains on the run after escaping police custody from outside the Taupō District Court on Monday.
