Just an interesting coincidence.... Yes I do rate Tony and Chris Yeung and their SED procedure, diagnostic ability, etc... very highly. I have seen many people go to them and I believe that their style of discectomy is highly advantageous in many (but not all) cases. I also rate Dr. Delamarter and his operation very highly. There is no one with more ADR experience in the US.
Few years ago, I was observing a client's surgery with Tony Yeung in Pheonix. Across the table, the assistant surgeon said, "Hey Mark, remember me?"
With scrubs, hat, and a surgical mask, everyone looks about the same. It turned out to be Justin Field. He had been Dr. Delamarter's fellow early in my career as a patient advocate and had helped me with MANY clients. He's a great guy and a top surgeon. He has a very interesting bio. Read it here:
Justin S. Field, M.D.
All the best,
Mark