While it's not strictly about a hospital doing surgical procedures wrong, the plot revolves around a group of film students who are investigating a mysterious urban legend about a hospital where surgeries were performed incorrectly, leading to horrific consequences.
The film utilizes the "found footage" style, adding to the creepy and unsettling atmosphere. However, it's not as widely known as some other horror movies, and doesn't quite match the popularity of classics like "The Exorcist" or "The Shining".
Do you remember any other details about the movie that could help narrow it down?