Mr Healy-Rae said it was "load of s***" when he was asked to confirm the 18 properties and pieces of land he has listed on the Dail Register of Members' Interests.
Over the course of a three-minute telephone conversation, the deputy shouted: "You'd swear I'm some sort of criminal.
"Any time I could lose my seat, I could be on my arse," he added.
Mr Healy-Rae, a married father of five, then moved on to personal family insults directed at the journalist asking questions about his assets.
"I have said it before about people educating children and sending them to school and getting them jobs and you end up in a job that you have there insulting your parents' work and their savings by being a stupid journalist writing rubbish," he said.
Mr Healy-Rae told the Sunday Independent he is "up to my eyes in debt and trying to pay off mortgages every week".
Mr Healy-Rae's brother Danny is ranked 50th in the Political Rich List with an estimated value of €1.6m.
Our analysis shows Danny Healy-Rae's land and properties to have an estimated value of around of €525,000. His business interests are worth €925,000. This includes a plant hire company and pub. Danny is a first-time TD and the current worth of his pension on the private market is €13,000.
Danny has become the more prominent of the two brothers since he was elected through his Dail contributions on climate change and drink-driving legislation.
Michael is the biggest but not the only landlord in the Dail. Analysis of the Dail declaration of interests shows one fifth of TDs have rental properties.
The 30 landlords include Tanaiste Simon Coveney, Minister for Justice Charlie Flanagan, Minister for Defence Paul Kehoe and Minister for Agriculture Michael Creed.
Five more Fine Gael TDs listed investment properties or rental incomes among their declared interests or said they are landlords. Dublin Bay South TD Kate O'Connell has five investment properties, two in Westmeath and three in Dublin.
The list also includes Ceann Comhairle Sean O Fearghail, 12 other Fianna Fail TDs, Labour TD Alan Kelly and four more Independent TDs including former minister Sean Canney, who has four letting properties.