New York City Stem cell therapy for Spinal Disc Herniation. Dr. Spivak is a board-certified Neurosurgeon who specializes in stem cell therapies.Dr. Spivak is a member of American Association of Neurological Surgeons, North American Spine Society and Society for Minimally Invasive Spine Surgery. He has trained medical students and residents and held faculty positions at Stanford Medical School, Albany Medical School and Columbia Medical School. He has presented at many conferences and courses on endoscopic spine surgery from coast to coast. He is an instructor for endoscopic surgery courses sponsored by JOIMAX Inc.