For heaven's sake. If you were well enough to stay out of the psych hospital, and in fact well enough to go to work, then you were well enough not to worry them out of their minds. No I don't think your pdoc should have called your boss--though it seems unclear whether that violates your privacy or not, from your odd insurance situation. But I don't think you should have let it come to that.

(As an aside, though, your new pdoc/therapist seems less than professional--or caring--to have a rule that you can't reach them outside of hours. Not even for a bona fide emergency?) That would be a deal breaker for me.)