| 7/12 | Director of Liver Surgery, Recanati Miller Transplantation Institute |
| 7/04 | Director, Surgical Oncology, Associate Director, Liver Transplantation |
| 7/02 | Director, Adult Liver Transplantation and Hepatobiliary Surgery |
| 1/99–6/02 | Deputy Director, Liver Transplantation, Chief, Hepatobiliary Surgical Services |
| 7/77–10/80 | Director, Craigsville Medical Center, Craigsville, VA |
| 7/87–6/89 | Section Chief, Bronx Veterans Admin Hospital, Bronx, N.Y. |
| 1/91–12/98 | Associate Director, Division of Liver Transplantation |
| 12/93 | Associate Attending, Mount Sinai Hospital, New York, N.Y. |
| 7/87–12/93 | Assistant Attending, Mount Sinai Hospital, New York, N.Y. |
| 1/78–10/80 | Medical Examiner, Augusta County, VA |
| 7/77–10/80 | Attending Physician, Kings’ Daughters’ Hospital, Staunton, VA |