Hi, Ron,
This is intended for internal use at a group of medical centers where I contract... based on their own lab interfaces.
And no, not an app - just display.
So... "right tool for the job" I think is either SQL Reporting Services or Power BI, rather than bashing something together with NT.
It was a challenge to get postal code shape files smaller than 800MB, but I found some and dummied up an SSRS map as a proof of concept. If they think this works, I can attach it to real data.
Thanks for the response.
Jane