There was a heart surgeon at one hospital that killed several dozen patients and, finally!, a magistrate judge let a suit for malpractice to proceed. Mind you, this same surgeon was operating on Congress critters and veterans for years. I was really surprised it took so long.
I have a medical team at the local VA hospital here and one of their first recommendations was suing the US Navy for malpractice and wrongful termination, and then the Veteran's Administration itself for malpractice. I'm not made of money and the only way you can go ahead on such a suit is to find a greedy enough lawyer, willing to stick to the case, and willing to play the magistrate judge lottery. I thinks it fairly obvious that I haven't found one yet. Gave up long ago.