He stayed at the Cancer Society owned and run Domain Lodge in Auckland during his treatment, which included Christmas. "They made the experience survivable."
"I didn't have to worry about accommodation, parking, travelling. There was someone on hand to help with advice."
Davis said one of the biggest supports was for his wife Tina.
"It's the support people it's really hard for because they're seeing someone they love go through something they can't do anything about."
He said the Lodge had get-togethers, such as morning teas, for the support people.
"I think that's what kept my wife sane."
Davis said when the Cancer Society are really good is after treatment, with phone calls and checks up by a nurse.
"You've still got a focus on you from someone who knows what you're going through."
He said he can raise things like concerns about medication and exercise. The nurse makes suggestions on ways to improve, things to look out for and gives positive reinforcement.
"Every time we talk there's something she can tell me that I never thought about."
Davis, who has an adult son and two step-children, started back at work only a few weeks after treatment and his tumour is gone.
"It's gone, so I've got the all-clear from that."
He said this type of cancer has a 50/50 survival rate at five years.