The HSE spent nearly 1.3 million euro on debt-collection costs in 2019 and 2020.
According to freedom of information documents, the money was paid to six companies - with one agency getting over half a million.
The HSE was seeking to collect unpaid costs, such as 100 euro for a patient attending an emergency department.
The Irish Patients Association, is questioning the debt-collection spend.
Wicklow To Receive Government Funding To Bring Vacant Local Authority Homes Back Into Use
Major Wicklow Train Station Upgrade Moves Ahead as DART Plans Progress
DART Station Closures Could Bring Eggstra Stress Over Easter!
Closures and Roadworks To Note Across Wicklow County This Week
Doyle Flush In Donegal As Wicklow Hurlers Promotion Bid Remains Right On Track