Dr. Kenneth S. Blumenfeld is a neurosurgeon in San Jose, California and is affiliated with multiple hospitals in the area, including Good Samaritan Hospital-San Jose and O'Connor Hospital-San Jose. He received his medical degree from Johns Hopkins University School of Medicine and has been in practice for more than 20 years. Dr. Kenneth S. Blumenfeld has expertise in treating spinal fusion, spinal stenosis and spondylosis, among other conditions - see all areas of expertise. Dr. Kenneth S. Blumenfeld accepts Medicare, Aetna, Blue Cross, United Healthcare - see other insurance plans accepted. Dr. Kenneth S. Blumenfeld is highly recommended by patients.