Sounds like a horrible situation! Have you gone to his office and requested copies of everything in your chart? Let them know that untrue information is following you to other Doctor offices that you have attempted to receive treatment from and you want to know exactly what information is being provided. If they put up roadblocks, you might need to contact an attorney that specializes in medical related cases, because it really sounds like your rights are being violated. From what you described, you did everything required of you and without actual proof that you you were seeing 5 different Doctors and being prescribed narcotic pain medication (while under contract with that Pain management clinic) than that inflammatory and untrue information should be removed from your chart.
You definitely have rights in this and any untrue information about you shouldn't be allowed to remain in your medical chart.
Hopefully others reply with additional suggestions.
I hope you are able to get this resolved in a manner that best serves your needs.
~ Fiona Jo