The following is a quote from one of Brian's earlier post. I wasn't sure how to direct you in answer to your question. I personally got a second opinion from MD Anderson by calling directly to the department that is appropriate. Head & Neck Cancer, and then I also got a referal from my doctor when they were taking a bit longer than I thought they should to scedule me. I would check the listing Brian mentions and talk to your GP if he is the kind of Doctor you feel will be helpful. If not you can do this yourself with copies of your records in hand.
"It is essential that you go to a multidisciplinary cancer center as Gary has suggested, where a radiation oncologist and doctors of many different disciplines, such as surgery, chemo, etc. will decide TOGETHER what is best for you. Also take a look on the resources page under the link to "Best Hospitals" for other possibilities for treatment. You may decide to not stay in your local area for treatment, or perhaps you have family near a facility with a rating that you find attractive."
Good luck,
Dinah