Hi and welcome to the Chiari forum.
I can not give a personal account of ne Dr in ur area as I am not down there, but I do know Dr Rosner has helped many with Chiari and a few are members here as well as Dr Henderson...we have a list of Drs that was compiled by the members here of Drs they went to and liked....u do need to research them as the list is not a referral nor an endorsement.
See the list in the Health Pages as well as other tips and info on chiari and related conditions,
http://www.medhelp.org/health_pages/list?cid=186