A BBC investigation has found that police recorded 1,200 assaults involving care home residents between 2014 and 2016, equivalent to more than one a day.
The File on 4 investigation said some care workers were not always given full information about residents who posed a risk to others.
A spokesman for the CQC said: “People living in care homes should feel safe and be protected from harm – and it is the responsibility of those who are in charge of running these services to ensure this happens. Should CQC find this is not happening, we will always take action that holds providers to account.”
Margaret Willcox, president of the Association of Directors of Adult Social Services (ADASS), added: “In cases where a person’s behaviour is more challenging for a care home to manage, it is essential the person is assessed, preferably by both a social care professional and the NHS.”
In one alleged incident a resident had suffered a fractured arm following an altercation with another resident.
In another report, care staff reported attending a room where two residents were found “bloody and confused” and unable to provide an account of what happened.
Professor Martin Green, chief executive of Care England, said: “That it’s being reported to the police is a good thing, because that shows care homes are not keeping this information to themselves.
“As we see more people with different types of dementias and exhibiting more challenging behaviours, we have to have a system that’s ready to respond to that.”