I see...the problem is that a lot of these niche applications run on proprietary, often older software. I've run into this with trying to integrate hotel bookin

I see...the problem is that a lot of these niche applications run on proprietary, often older software. I've run into this with trying to integrate hotel booking systems with websites, with financial institutions trying to add credit applications into apps, and car manufacturers trying to generate OEM incentive coupons. The EHR company may just have one developer working on integration, so you may not be able to get much movement on your custom integration