I do not know of a doctor in San Antonio, but I have spoken with Dr. George's office in Austin, Texas who deals with Chiari. Search online for Dr. George, Austin Texas
I am curious to find out if you found a doctor. I am in San Antonio also. I have an HMO and have to go through their 61 neuro surgeons before I can leave the S.A. area. I know you posted your question months ago, hopefully you check in every once in a while . oh, check craigslist San Antonio under people. Someone is trying to start a support group:)
I forgot... on the craigslist.. go to people...type in chiari.. the post was made in Aug. around the 17th i think. good luck. hope to see you there.