Dr. Feng introduced himself and was very easy to talk to. He listened to me. My procedure was pain free unlike my experience with the Indian lady who never spoke to me, I never saw her, and she did not use enough anesthesia. The experience with her was very painful. I felt everymove of the needle into my sacroiliac. I would never go to her again. I'm sorry to report this but my experience with Dr. Feng was so good that I felt I had to write something about the difference in treatment. My aftereffects were no different with the adequate anesthesia. I recently had open heart surgery and I never felt any pain.