More than 1,300 attacks have been reported against NHS staff in central Lancashire in the last year.
NHS Protect revealed the shocking figures for physical attacks against workers in 2014-15.
More than 1,200 of those assaults were reported against staff at Preston-based Lancashire Care Trust, which employs around 8,000 people and provides mental health and wellbeing services.
At Lancashire Teaching Hospitals NHS Trust, which runs Preston and Chorley hospitals, 143 attacks were reported.
In the north, 169 attacks were noted at University Hospitals of Morecambe Bay, while a further 376 were recorded across the North West Ambulance Service’s workers.
Richard Hampton, head of external engagement at NHS Protect, said some attacks go unreported.
No NHS staff should be physically assaulted and we encourage staff who are victims of violence to report it, so that appropriate action can be takenRichard Hampton
He added: “No NHS staff should be physically assaulted and we encourage staff who are victims of violence to report it, so that appropriate action can be taken.”