What are alternatives to methadone for pain?

I had shingles in 2003 and it caused nerve damage (phn). I take about four or five 5mg doses of methadone a week to control the intense pain in the trigeminal nerve in my face. I am afraid of becoming addicted to this drug. Loritab does me no good at all. Has anyone had this experience. I have a physician that will prescribe methadone but I would really like to get away from it and him. My family physician can write lesser painkillers but I absolutely don't know which way to go. Are pain management doctors usually effective?

: http://alcoholdrugstreatment.info/what-are-alternatives-to-methadone-for-pain