There have been 37 sexual assaults reported at Western Trust Hospitals from 2019 until 2024.
The region seen the least number of reports in Northern Ireland from a total of 2,341.
The Health Minister for Northern Ireland confirmed the figures to DUP MLA Jonathan Buckley in a written parliamentary question.
15 occurred at Altnagelvin Hospital, 3 at Omagh Hospital & Primary Care Centre and the remaining 19 were reported at the South West Acute Hospital.
Mr. Buckley raised the issue in Stormont earlier this week:
A link to a the full breakdown across Nothern Ireland can be found here.