Yes they do. I had an Annual appointment with a Doctor, my Thai Wife asked me if she could see the Doctor too, when we came to the Cashier the prices were different, mine of course was higher than my Wife's, when i asked why, they told me its Hospital Policy to charge foreigners more.. ..Two months ago i wrote to this particular (International) Hospital asking if this "Hospital policy" was correct, I also wrote to all International Hospitals in Pattaya asking the same question, and if so , Why......My question to all Hospitals remain unanswered