Allegations of physical and psychological abuse towards the elderly have increased by more than 40% over the past two years.
According to details released under the Freedom of Information Act, the HSE received 711 complaints of physical abuse in 2016 - but this rose to 1,010 last year.
Allegations of psychological abuse rose by 41% in this time frame, with 1,261 last year.
The HSE said it has a no-tolerance approach towards all abuse, but Fianna Fáil TD Eugene Murphy said the stats are a big worry.
He said: "The information which has been received through the Freedom of Information revealed shocking figures.
"While one might say they are allegations, the fact that the HSE is saying that quite a large amount of them have reasonable grounds is certainly shocking and certainly is an issue that would cause a lot of concern to a lot of people."