Sorry to hear about your diagnosis,, I think some of the best advice I could give you ( as someone who has been through surgery 10 years ago and has been on this forum for about 15-16 years),, you need to be your own advocate and research, research, research,,
the first appointment with a doctor can be overwhelming. I had someone with me at all appointments who could ask questions but mostly could listen and take notes for me. One of the most important things is for you to feel comfortable and confident in the doctor you decide to go forward with for treatment ,, if you decide to treat it and not just watch and wait for awhile.
How were you diagnosed? What is the size of it?
Have you had an MRI WITH contrast? That is generally the way the diagnosis is made. ( BTW,, I don’t know anything about Dr Arriaga and I’m not a medical person so I can’t speak to him ,, just generally speaking here) ,,,
One other suggestion is to send a copy of your MRI and any audiologist tests, to The House Clinic in Los Angeles,, they will provide you with a complementary phone consult with one of their doctors after looking at your situation. I did it and it was VERY informative and helpful in figuring out what I had and what another doctor thought about treatment. You don’t have to plan to go out there for treatment,, it’s just a service they provide. They are a premium AN Center along with several other clinics around the country that provide this service.
Any way,, just some thoughts to help you move forward. Best of luck to you. It’s a hard journey but you can do it. Take your time and be confident with your plan of action.