I have found the same with S's GP and many ER doctors as well - I often have the sense they don't always seem to understand my concern for complications. I'm left wondering if I'm overreacting or not?!?
Pilgrim, is your daughter's GI affiliated with the local hospital? We started to go to his GI's hospital's ER department for anything out of the ordinary. I do think they are a great hospital but, if we need to put in a bit of a push, we'll mention that his GI is there (...I think his GI is fairly well recognized). I'm never sure if it actually makes any difference but certainly can't hurt. Another benefit is that all his records/results are accessible to his GI.
When S went to the ER because of the chest pain a couple of years ago, same hospital, he was referred to a cardio at that hospital and, again, both GI and cardio (and ortho re shoulder) all were aware of one another, all meds, etc.