Where is Dr. Ketan Sharma?

Does anyone know why Ketan Sharma is no longer working for St. Lukes? I’m having post-op complications from his surgery so wanted to make an appointment. I was told that he was no longer with the hospital and it was a sudden change. I don’t want to pry into personal lives, but I want to know if there was a reason for the separation that could also explain my surgery complications. Ie medical malpractice or negligence? Not making any conjectures, just want some assurance. Feel free to DM instead of comment.