He has an MD and PhD from Harvard Medical School in Boston and did his neurosurgery residency at the Harvard affiliated Massachusetts General Hospital (MGH). Since joining UCSF six years ago, he has performed nearly 500 endonasal operations for pituitary tumors and, as the leader of an active clinical research program, he has published 24 articles on surgical technique and outcomes for pituitary tumor patients. He is currently directing a national effort sponsored by the Congress of Neurological Surgeons to establish evidence-based guidelines for neurosurgeons caring for patients with pituitary tumors.