It happened at William Osler Hospital near Bovaird Drive East and Bramalea Road on June 15.
Police say the victim, a 37-year-old Brampton woman, had gone to the hospital for undisclosed reasons when she was sexually assaulted by an employee.
Nicholas Sahadeo was arrested on June 24 and charged with sexual assault in connection with the incident.
In a statement, William Osler Hospital confirmed that the defendant was a contractor at the hospital but “no longer provides services at any Osler facility.”
“William Osler (Osler) Health System offers its full support to the victim and his family. At Osler, we are committed to providing a safe and secure environment for patients, families and healthcare workers, and we take such matters extremely seriously,” the statement noted.
Police said Sahadeo worked at the hospital for about 10 months.
They say investigators believe there may be additional victims who have yet to come forward.
An image of the suspect has been released and anyone with information on the case is asked to come forward.
“It remains an open and ongoing investigation,” police said in a news release.