Hi and welcome to the Chiari forum.
U may find it easier for ur PCP to do more testing and then just contact a NS, as a NL is to DX and a NS to treat.....if ur PCP does not want to do more testing or what type to do, contact a NS that is well informed with Chiari and ask which NL office they work with, that way u know they know Chiari and ALL related conditions.
We do have a list of NS's that the members here have been to, treated by and liked....the list is not a referral nor an endorsement, it is only meant to give u a starting place in researching the Drs....visit a few,educate urself and decide which one is right for u....
Below is a link to our Health Pages where u will find the list of Drs as well as other helpful tips and info-
http://www.medhelp.org/health_pages/list?cid=186