Cheryl --
You asked about how to get started at M.D. Anderson -- here's a page
with all that information.
A friend who does not live in Houston was treated for breast cancer at M.D. Anderson -- she had her chemo (prescribed by MDA physicians) in her hometown and returned to Houston for surgery. Don't know if similar arrangements can be made for radiation treatments, but you can ask -- perhaps MDA has affiliations with local doctors across the country. Those here who were treated there would know better.
I wish your friend (and you) all the best. And yes, your friend should be seen at a facility where a team approach is the norm and head/neck cancer is routine, not the exception.