I am doing healthcare development in C# - CQMs (clinical quality measures), CCDA generation and parsing, HL7 processing, patient portals, doctor portals, ePresc

I am doing healthcare development in C# - CQMs (clinical quality measures), CCDA generation and parsing, HL7 processing, patient portals, doctor portals, ePrescribing, direct messaging, lots of REST APIs as client and server, the list goes on and on. C# is an excellent fit for all of this and lets us develop powerful applications quickly. The web sites are IIS and most of the applications are distributed as Windows Services. The typical model for most of our applications is we have three components - background agent, UI, and database. The UI handles configuration, user management, controls starting and stopping of processes, and also handles incoming API calls. The background agent is usually a windows service and the database is usually SQL Server. Our products are used by hospitals as installable products and also by software vendors as libraries and bolt-on applications.