"If You Don't Know Me By Now" is the eleventh episode of the fourth season of Private Practice and the 65th produced episode of the series. It is also the 202nd produced episode of the Grey's Anatomy franchise. It was broadcast on January 6, 2011.
Addison's mother Bizzy aggressively demands her daughter do whatever it takes to save her partner from dying, putting a strain on their already tense relationship while Sam worries about the effect Bizzy's presence is having on Addison. Charlotte and Cooper try to be intimate again while Violet considers what to do with a personally revealing book she's written. Amelia and Pete's treatment of a patient is complicated by the conflicting wishes of his wife and his mistress.
- "Brand New Shoes" - She & Him
- "Pennies In The Snow" - Farryl Purkiss
- "I'm In Here" - Sia
- "31 Flavours" - Little Jackie