You have a difficult but not an impossible problem. If the pain medication in Federal Class II and new written prescription will be required every time the medication is filled. If the medication in Class III it can be refilled, but each State has it's own laws regarding the refills. In California it can be transferred for refill only once, even if additional refills are indicated. In all States the pharmacist must accept legal liability for the "legal proper use of the medication." This degree of risk will create a situation where most pharmacists will not fill an out of state prescription for a pain medication, and they may not even fill an in state prescription when the doctor or the patient is not known. If you are going to a location for an extended stay, establish yourself with a single pharmacy and make arraignments in advance for your prescription to be faxed or mailed and verified. Some prescription must be original and cannot be faxed. If you are going to traveling, it would be best to have your physician e-mail or fax a letter to a clinic in each area you anticipate visiting at the time of a needed refill...you will then have to visit the clinic, pay for a consult, and have a new prescription issued. This seems like a horrible bother, but enforcement by the DEA and local State Boards, and articles by major news sources have created an atmosphere of fear among health professionals. You might also check with your insurance carrier to see if they have a nationwide network where you can see an urgent care physician for refills. Again, an advance letter from your physician would be most helpful.
This is the opinion of a retired California/Nevada pharmacist.
Hope it helps.