I would give this Dr. 20 stars if I could. He performed an L4/5 fusion and laminectomy on me for severe left leg sciatica. One week post op I am walking 2 miles with no pain down my leg at all. My care has been outstanding at the UCSF spine center. I without question highly recommend Dr. Deviren for any sort of spine problems. He has no ego and is genuinely an excellent surgeon. BTW I am a 52 year old female, and dedicated runner, which will probably turn into a fast paced walker now.