I would stay with one pharmacist in your home town and use it exclusively on the road. For example Walmart or CVS. I have had better luck with CVS than Walmart but CVS doesn't have pharmacies in all states. The law for controlled substances is that you must have a long term personal relationship with the same doctor. If you stick with one national pharmacy chain they can see your past prescription history. They can also request a new prescription from the doctor if they need it. They will need to "transfer" the prescription to that location each time you fill it. That takes extra time. I have CHAMPVA and Walgreens does not have an agreement to accept CHAMPVA insurance. I believe it's the same for Tricare.