I've only been to once so far, but I'd definitely come back again.
Was feeling really awful and had to call in sick to work. Since it was a friday, I'd need a doctor's note so the bosses won't think I'm just taking an extra long weekend. I needed to closest place around as I was in no state to trek anywhere. Appletree Medical is on the south side of Queen in a little mini mall building with the big borwn brick archway.
I was in fast, no wait. The receptionists were really pleasant and helpful registering me so that next time I go I can easily check in at a kiosk. Before you go you can even check the wait times for each clinic online.