Laurence Katznelson, MD received his medical degree from the University of California, Los Angeles and performed his internship and residency in Internal Medicine at the Hospital of the University of Pennsylvania, Philadelphia. He then performed a fellowship in Endocrinology and Metabolism at the Massachusetts General Hospital, Boston. Dr. Katznelson is a Professor of Neurosurgery and Medicine at Stanford University School of Medicine. At Stanford University, he is the Associate Dean of Graduate Medical Education and the Chair of the GME Committee. Dr. Katznelson is currently the Medical Director of the Pituitary Center at Stanford Hospital and Clinics. In the Endocrine Society, Dr. Katznelson has served as Chair of the Special Programs Committee and member of the Scientific and Educational Programs Core Committee. He has served as Chair of the Task Forces for writing clinical guidelines for the approach to acromegaly for both The Endocrine Society and the American Association of Clinical Endocrinologists. Dr. Katznelson has also served as Chair of the Clinical Investigator Workshop for the Endocrine Society. He is a member of the Editorial Boards for Frontiers in Medicine, and an ad hoc reviewer for Pituitary and the Journal of Clinical Endocrinology and Metabolism. He has served as an ad hoc member of NIH study sections. Dr. Katznelson has a long standing clinical and research interest in the pathophysiology and treatment of pituitary disease.