an expanded two hour broadcast of "grey's anatomy" served as a backdoor pilot for "private practice". in the two episodes from "grey's anatomy"'s third season, addison montgomery visits friend and reproductive endocrinology and infertility specialist naomi bennett in los angeles to discuss whether or not she could have a baby. during her trip, addison becomes acquainted with the ocean wellness center, the medical practice in which a majority of "private practice" takes place, and its staff. the two episodes serve to explain the reasons behind addison's move from seattle to los angeles.