Great idea! Which EHR/scheduling systems do you currently interoperate with? EmStat, Epic, etc. Alternatively, if you're not directly hooking into the ER's systems:

A) What sort of workflow do you use to exchange scheduling and appointment data between your site and the ER?

and

B) Is it the same for each participating hospital? If not, how are you planning on scaling your operation to include more than four hospitals? I'm genuinely curious, having done some work on ER workflow analysis and modeling. I think this is a great idea, but can envision some pretty significant workflow issues on your horizon depending on how you've got stuff set up currently.