Winterbourne View has since been bought by Glenside Manor Healthcare Services
The results of a serious case review following the abuse of patients at Winterbourne View private hospital, near Bristol, will be released later.
The abuse was uncovered during secret filming by the BBC Panorama programme.
Eleven people have admitted charges of ill-treatment and neglect related to the abuse.
South Gloucestershire Safeguarding Adults Board (SAB) commissioned the review and it was carried out by an independent expert.
Campaigners have warned that a similar situation could arise at other care homes unless the government takes action.
Mencap and the Challenging Behaviour Foundation said they had received 260 reports from families concerning abuse and neglect in institutional care since the Panorama programme was aired in May last year.
Their joint report - Out of Sight - detailed a number of serious incidences reported by families, including physical assault, sexual abuse and the overuse of restraint.
Mencap Chief Executive Mark Goldring said: "We fear that unless the government commits to a strong action plan to close large institutions and develop appropriate local services for people with a learning disability, there is a very real risk that another Winterbourne View will come to light."
Twenty-four patients were transferred from Castlebeck-run Winterbourne View, near Hambrook, following the BBC investigation.
The hospital was closed the following month.
The criminal charges related to five patients at the hospital.
All the defendants are awaiting sentence.
