The way you get to the back is through the counter, which has a lift up top and through the doorway behind there.

[quote=@The Fated Fallen]
<Snipped quote by Dragoknighte>

Convenient plot hole repair = 'The Red' isn't used to buildings, since he spends most of his time in the wilds. As a result he can't tell the difference between a hall and a room

Secondly, I thought there was a hall. Most buildings have halls, how else would you connect the rooms? If there is only front house, back operating room and a few side rooms for stock where have all the patients gone?
[/quote]

I said the back room is the operating room. What I meant is that the back room is actually more of the "main" room where all the hospitaling takes place, and is many times larger than the rather small front/shop portion of the store