I have never seen a specialist without a giant wait-list. These providers tend to have too many patients so they have a negative incentive for trying to make it easier to reach them.

I work for a Canadian EMR company and we deal with a couple of options for medical voice software. I know Dragon naturally speaking has a medical offering that likely would meet any regulatory requirements. There are also some subscription based ones that I don’t know if there are US versions of, but If you google the medical options you should be able to find some options.