I can't speak to your neighbor's exact situation but in some instances insurers are required to keep paying for things like cancer treatments, even after a network departure. (I, unfortunately, had to be notified of this just last week.)

Note that the banjo-playing Steve Martin who posted this is not the banjo-playing Steve Martin whose birthday is today. (Yes, it's very confusing!)

Most players were wearing facemasks by 1961, Ernie

That is a different Steve Martin.

Different Steve!