And the form asked for "gender identity". The options were male, female, male to female transgender, female to male transgender, genderqueer or other not listed (no idea what could be in that category). First time I've seen anything like that.
So at least they reference biological sex, except if you tick genderqueer or other I suppose. Why not have a section for sex and another for gender identity though? Surely a medical office should know that sex actually matters when it comes to healthcare!