I’m not surprised that Schlachter cites the heavily extrapolation-based Journal of Patient Safety study claiming 400,000 medical error-related deaths per year and the thoroughly debunked Makary study claiming 251,000 deaths per year due to medical error. He does a little extrapolating of his own and comes up with 562,000 patients per year.
I agree with Schlachter about many issues. He says the best way to avoid becoming a victim of negligence is to take good care of yourself. If you need to be hospitalized, aggressively be your own advocate or have a relative or friend do it. You cannot assume that mistakes will not happen.