Could hang in there with Luminello. They did make the adjustments recently for multiple office locations, and also the default sets to the patient chart for which office they are attached to and the multiple Tax ID options for different office locations. The break down on assistant site also shows what looks like future expansion to multiple providers.
I think they are finally on the cusp in the next 2-5 months releasing a true multi doc, multi location capable EMR.
You could also message them and say hey, I will likely be dropping luminello unless you can give me a tentative timeline of multi doc operability? And depending on that answer shape your decision?