More than 100 patients who underwent dental and eye care treatment in Northern Ireland ended up in court after many were accused of cheating the NHS, a report has revealed.
Dishonesty and mistakes in the system cost the taxpayer over £3 million.
A GP and two dentists were investigated for suspected fraud, the report said.
A dentist was referred to the General Dental Council and another faced civil proceedings.
The fraud was disclosed in a Department of Health paper.
More than 5,000 cases where exemption from charges was claimed were investigated.