A dilemma

I noticed a name on the list of patients coming in tomorrow that is someone I know. I guess I know "of this person" but have never met this person. I'm sure there will be a time when I will be introduced to this person but do I introduce myself tomorrow? What of HIPA laws? I don't want this person to think I've read his/hers medical history. But if I don't introduce myself and then we meet later and he/she recognizes me or asks where I work etc. it will be kind of weird. Isn't it driving you crazy to know WHO this person it?? I can't say.....HIPA!