Is she the wife of Facebook’s founder? (I must have lived under the rock if I do not know this :))
If she is, I read somewhere that this couple are relatively very active in charity work at such a young age. It is said in that article that they are into this effort originally because of her passion in this. I thinks she becomes a pediatrician after graduated from H (where she met her husband) and UCSF. (Whoever specializes in pediatrics is likely not into medicine for its financial reward. Hmm…it is because young parents tend to not have much money??)