I don't know anything about who accepts what, but I just saw someone from The Headache Center at West Penn (AHN) and they were amazing. I would heartily recommend them if you're covered.

Edit to add, after seeing another post about how bad their experience was, I saw Beth Kus, PA & she sat & talked to me for an hour about my symptoms and we developed a plan going forward. I felt heard and respected, but I can only speak to who I saw.