About Dr Holtzman Robert N. Holtzman, M.D. is board certified in neurosurgery as well as in psychiatry and neurology. His interests in neurosurgery include cranial, spinal and peripheral nerve surgery. They include microdiscectomies, spinal decompression with stabilization and fusions and many intracranial procedures for trauma, tumor, hemorrhages and blood vessel disorders. Born in Brooklyn, NY, Dr. Holtzman received his undergraduate degree from Harvard College studying biology and his medical degree at Columbia’s College of Physicians and Surgeons.