I'm glad you like the name! It was established like a year and a half ago. Since then someone developed some... not-so-great social app with the same name. We haven't really dealt with that yet.
HIPAA issues are going to be a nightmare, I agree. I think before we truly launch we're going to have to bring someone with thorough domain knowledge in for that. I went over-board with encryption, pretty much everything in the database is encrypted but naturally it's going to be some quirk with legalese that will catch us up. "The patient's mood is technically a medical condition and so cannot be displayed without waiver a-123" or something.
I appreciate your two ideas. Medication is something we're VERY hesitant to approach. God forbid a query gets screwed up (or even user error) and they end up with double dosages. Maybe later on, but for now... they can send messages with reminders or something :)
The mood ratings are a wonderful idea. I will be adding that to our to-do list. :)