Welcome to the Chiari forum...I see they moved ur thread to the forum.....
We do have a list of Drs for u to use to research....Drs for Chiari, true specialists may not be close to ur location, so be prepared to have to travel .
http://www.medhelp.org/health_pages/list?cid=186
U will want to educate urself so u will know when u have found the right Dr, and the right Dr is key.
U will want a CINE MRI to see if u have a CSF obstruction due to the herniation.....then u will want to rule out ALL related conditions...
many of the related conditions can cause many of the same symptoms as Chiari.
And for ur question, do they normally operate on a herniation of ur size....if it is creating a CSF obstruction and affecting ur overall health then yes, a true Chiari specialist will...my herniations were 4mm and 6mm...there are 2 tonsils so 2 measurements...and the length is not as important as if it is corking things up.