Just like physician anesthesiologists, nurse anesthetists are responsible for securing their own liability coverage. In part because the care delivered by CRNAs is getting safer all the time, nurse anesthetist professional liability premiums are 33 percent lower today than 25 years ago, 62 percent lower when adjusted for inflation. The same legal principles that govern the liability of surgeons working with nurse anesthetists apply to surgeons working with physician anesthesiologists.