Do you have a fairly low level person in your office (that is to say, someone at the low end of the pay scale) who knows some medical terminology and has some proficiency with AC? If so, the cheapest option may be for that person to sit down with a decent version of dragon (though not necessarily the medical version), a desktop mike, and headphones. At the end of each day, they listen to his dictation, and nearly simultaneously they simply repeat it into Dragon, placing it in the appropriate sections of AC. I bet with a bit of practice, they could get pretty quick. Cumbersome, and unnecessary, but an option to consider given the limitations your partner has established.
