As an update for you guys, I did call the social worker that has been assigned to his case (along with 200 others, so not much "face time" with the patients) but he will be looking into options for placement for him. Of course he mentioned that he had been informed by the ER staff about our concerns and would take them under advisement, but when I mentioned the frequency of his trips, his general condition as well as the circumstances around his living arrangements he seemed to become more concerned.
I'm not really worried about the "reporting requirements" as when I mentioned to the ER nurse I'd done "due diligence". I do feel somewhat better now after talking to the Social Worker because it has moved his case up above a lot of the general "possible placement needed" cases that come in on a daily basis. Now it is completely in the hands of the Health Region to decide what needs to be done, but at least I've been able to make an impression on the case worker. Only time will tell now.