You mentioned Mass General, so I'm assuming you're near Boston? I'm in Massachusetts and my insurance covered consultations in State, so first I went to: Dr. Vernick (ENT) Brookline, & Dr. Devaiah (Boston Medical) Both were great.
I needed to decide between W&W, Surgery or Radiation.
For Surgery advice I went to Dr. Barker (Mass General) - he has the most experience with AN's. For radiation research I went to Dr. Loeffler (Mass General- proton radiation)
Cyberknife dept at Beth Israel & Cyberknife at Boston Medical,
UMass Memorial (Varian LINAC) Dr. TJ Fitzgerald
Then I paid out of pocket $500 to consult a surgeon in NYC at NYU Langone - Dr. Golfinos, but was mysteriously reimbursed from my insurance (Harvard Pilgrim).
I took advantage of the free consult from House in L.A. Was assigned to John Goddard, who was terrific - we had a long talk and he called me back twice in the 6 months of my research to follow-up on my decision, even though I told him if I chose surgery it would be in Boston or NYC.
I lined up all the appointments myself, then my primary care took care of the referral paperwork.
I cold called Doctors out of State, and had amazing responses. I learned so much about radiation by phone from Gil Lederman (Radiosurgery New York). He gives out his cell phone number and actually answers. He was OK with talking about theories of different treatment options without needing to see an MRI.
Also had long talks with Dr. Lipani (Princeton Neurological) & the Cyberknife Dept. at Yale New Haven. without needing to see my MRI.
I needed to buy a new briefcase for all my notes, which we nicknamed the 'AN football'
So, after all that...I decided on radiation with Dr. TJ Fitzgerald at UMass Memorial, which is a long story, but I wanted to just address your question of seeking good advice.
Hope this helps..
Ruth