| 1951 | B.A., English and French Literature, Princeton University, N.J. |
| 1955 | M.D., Medicine, College of Physicians & Surgeons, N.Y.C. |
| 1960-1962 | Fellow, New York Heart Association, Cardiopulmonary Physiology |
| 1961-1989 | Director, Division of Nuclear Medicine, St. Luke's/Roosevelt Hospital |
| 1963-1970 | National Heart Institute Program in Cardiovascular Physiology and Metabolism, Associate |
| 1967-present | Director (1967), Director (1970) |
| 1970-1971 | Director, Body Composition Unit, St. Luke's-Roosevelt Hospital Center |
| 1971-present | NIH Research Fellowship, Donner Laboratory, University of California at Berkeley |
| 1975-present | Bioengineering Institute, Columbia University |
| 1980-present | Attending Physician, St. Luke's-Roosevelt Hospital Center Professor of Clinical Medicine at Columbia University College of Physicians & Surgeons, at St. Luke's-Roosevelt Hospital Center |