I know I'm coming into this more than a year and a half late, but just in case anybody else show up here:
Particularly where language is concerned, people are very quick to criticize others, to say that what is strange to them is wrong. I'm guilty of this myself, and I'm trying to break myself of it. Dear friends, please check before you declare your righteousness. Expresso is a variant of espresso, according to (blast, I forgot to count) at least seven or eight online dictionaries. The first shops to dispense the beverage in the town that I grew up, back in the 50s, had neon signs which proclaimed EXPRESSO. I remember being shocked the first time I saw espresso, sure that someone had wasted money on a misspelled sign.
That poor doctor wasn't wrong or guilty of inattention; he was just in the minority. Last I checked, that's not a crime.
Peter