AvangiDo we acknowledge the use of present
progressive where it means future?
Yes, for verbs other
than achievement verbs (and even for some achievement verbs in the
right contexts, involving how plannable the event is, I'm guessing), the present progressive can express
future time.
Strictly speaking, according to some grammarians,
it's not the verb, but the entire predicate that's involved. But
that's a theoretical argument, and I don't know if it's ever been
completely resolved.
In any case to take someone to the doctor is not an achievement (The technical term is accomplishment),
because at all points during the taking of someone to a doctor, it can
truly be said that the taking is in progress. Thus, to take someone to a doctor is not in the same category grammatically as to win a match.
These categories of 'event types' were first set up by Vendler, a name you might Google if you want to know more about it.
CJ