@Jules (moderator for this forum) wrote this post about ES surgery. Under the " Which doctors are the best to perform surgery? heading there are 11 questions we recommend asking any doctor you interview. The answers you receive will help you know how qualified a given doctor is to do your ES surgery.
You could add a question 12 - Have you done any surgeries where IJV decompression was necessary? If so, what was your approach to decompressing the vein? What do you do if the transverse process of the C1 vertebra is contributing to compression?