Modify Inbound CallerID to Prepend DOCTOR to it

We have a client who is a medical facility. They have calls on all lines all day long. They need a Trunk/Inbound Route Dedicated to have for JUST the doctors to call in on. That is the easy part. Now I need to modify the CallerID to prepend DOCTOR: to it so it would look something like DOCTOR:7342345555

I know you can use queues to do this, but I dont want the doctors to trudge their way through a queue. I see there is a few articles on here about modifying incoming caller ID but nothing that I can find like what I am looking for.

Can I delete this post… please let me delete this post… I am blind today.