Dr. Bilezikian, the Dorothy L. and Daniel H. Silberberg Professor of Medicine and Professor of Pharmacology at the College of Physicians & Surgeons, Columbia University is Vice Chair of the Department of Medicine for International Education and Research and Chief, Emeritus, of the Division of Endocrinology. He is Director of the Metabolic Bone Diseases Program at Columbia University Medical Center. Dr. Bilezikian received his undergraduate training at Harvard College and his medical training at the College of Physicians & Surgeons. He completed four years of house staff training (internship, residency and Chief Residency) on the Medical Service at Columbia Presbyterian Medical Center. Dr. Bilezikian received his training in Metabolic Bone Diseases and in Endocrinology at the NIH in the Mineral Metabolism Branch under the tutelage of Dr. Gerald Aurbach. He belongs to a number of professional societies including the ASBMR, of which he served as President, 1995-1996 and the ISCD, of which he served as President, 1999-2001. He is a member of the Endocrine Society, the American Federation for Clinical Research, the American Society for Clinical Investigation, the Association of American Physicians, the American Association of Clinical Endocrinologists, the American Society for Pharmacology and Experimental Therapeutics, and the American College of Endocrinology that has designated him Master. He served on the Board of Governors of the International Osteoporosis Foundation (1999-2015) and is a current member of its Committee of Scientific Advisors. He is Chair of the Endocrine Fellows Foundation. He served as Editor-in Chief of the Journal of Clinical Endocrinology and Metabolism and as Senior Associate Editor of The Journal of Bone and Mineral Research. He is Executive Advisory Editor of Bone Research. His books include Editor-in-Chief of The Parathyroids [1994, 2001, 2014], and co-editor of The Aging Skeleton (1999), Dynamics of Bone and Cartilage Metabolism (1999, 2006), Principles of Bone Biology (1996, 2002, 2008) and Osteoporosis in Men (2010). He is Editor-in-Chief of the Primer on the Metabolic Bone Diseases and Disorders of Mineral Metabolism (2016- ). He has been on numerous panels, including serving as Chair of the NIH Consensus Development Panel on Optimal Calcium Intake (1994), Co-chair of the last three International Workshops on Primary Hyperparathyroidism (2002, 2008, and 2013) and of the first International Workshop on Hypoparathyroidism (2015). He is a major national and international spokesperson for the field of metabolic bone diseases. Dr. Bilezikian's major research interests are related to the clinical Investigation of metabolic bone diseases, particularly osteoporosis, primary hyperparathyroidism and hypoparathyroidism. He is the recipient of the Distinguished Physician Award of the Endocrine Society, the Frederic C. Bartter Award of the ASBMR for Excellence in Clinical Research, the First Annual Global Leadership Award of the ISCD, and Lifetime Achievement Awards of the Armenian American Medical Society of California and the Armenian American Health Professionals Organizations. In 2009, he received the Gideon A. Redan Excellence in Mentorship Award from the ASBMR. He received the Laureate Distinguished Educator Award of The Endocrine Society in 2014. In 2014, he was made honorary member of the Brazilian Society of Endocrinology and Metabolism. In 2015, he received the Oscar Gluck Humanitarian Award of the International Society of Clinical Densitometry and the Inaugural Global Educator of the Year Award from McMaster University in Canada. His publications, which number over 750, speak to his active original investigative initiatives as well as his authorship of many reference sources of endocrinology and metabolic bone diseases.