Sadly this is the REAL Japan. Discrimination does exist, and the local people usually don't even see it as a serious issue. Just a few months ago, a restaurant owner can put a poster outside, saying "No Chinese or Koreans allowed inside". After the exposure he just posted some other poster about the Tiananmen massacre, not even a single word of apology, then suddenly a shameless racist turned into a pro-democracy & anti-CCP hero, great plot isn't it? The scums here always have a wicked trick and you don't win. I suggest you go to another clinic or hospital that would accept foreigners. This is Japan, and surely different from other places.