Dr. Peter L. Elkin, MD, MACP, FACMI, is Professor of Medicine, Vice-Chairman of the Department of Internal Medicine, Director of the Center for Biomedical Informatics and Vice-President of the Mount Sinai Medical Center at the Mount Sinai School of Medicine. Before coming to NY he was Professor of Medicine at the Mayo Clinic College of Medicine. He received his Bachelor of Science from Union College and his M.D. from New York Medical College. He did his Internal Medicine residency at the Lahey Clinic and his NIH/NLM sponsored fellowship in Medical Informatics at Harvard Medical School and the Massachusetts General Hospital. Dr. Elkin has been working in Biomedical Informatics since 1981 and has been actively researching health data representation since 1987. Dr. Elkin currently is the vice-chair of ASTM E31, an international standards committee focused on Health Information, he is the Chair of ASTM E31.01 the subcommittee focused on Controlled Health Vocabularies. Dr. Peter L. Elkin is the primary author of the American National Standards Institute’s (ANSI) national standard on Quality Indicators for Controlled Health Vocabularies ASTM E2087, which has also been approved by ISO TC 215 as a Technical Specification (TS17117). Dr. Elkin is the index recipient of the Homer R. Warner award for outstanding contribution to the field of Medical Informatics.