clinical pharmacists in the US can do this now-i go to the VA for my medical care and my clinical pharmacist,who has the title Dr. and a lot of training can prescribe or modify my physician's prescriptions-they know a lot more about the medications and their effects,interactions,etc.than MD's do-i have really great respect for them and my health has improved recently-of course they work in close coordination with my MD
It would certainly be nice if all pharmacists were trained, licensed and staffed to the level of the one you mention.