Thank you all for answering my questions.
The documents I received from the VA listed two options when appealing to the Board.
1. You may request a hearing with a Veterans Law Judge and/or the opportunity to submit additional evidence.
2. You may also choose for the Board to review your claim without any additional evidence or a hearing, which may result in a faster decision.
I don't have any new evidence, except I would like to include several prior VA decisions such as this one: https://www.va.gov/vetapp16/files3/1624350.txt, which is closely related to my case.
Which options do you recommend? Thanks.
P.s. I would like to add that Dr. Anaise's office has been very helpful. They promptly answered all my questions. Although they advise going with Higher Level Review, I think by asking questions here helps me understand all my options.