There has been so much analysis of every step of the health care pipeline, and most of the meta-analyses I have read suggest that there is no silver bullet, only many, many, many things combined.

All nedical malpractice costs combined, insurance, actual payments, and legal combined, amount to 0.3% of the total cost of health care[0]. That's one-third of one percent. So its not nothing, but it's not the highest priority, either.

[0] https://truecostofhealthcare.org/malpractice/