Davis left 75% of his estate to be used for the construction of a Jewish public hospital in Montreal that would bear his name. However, he stipulated that the funds be invested for 50 years to allow them to reach a sum capable of funding a sizable hospital. And so it was that in 1978, $10 million from his estate was donated to the existing Jewish General Hospital in Montreal, which was renamed the Sir Mortimer B. Davis Jewish General Hospital.