||1973-1974 Internship at the Sheba Medical Center, Tel Hashomer.
1974-1978 Military service as a medical officer, Israeli Defense Forces (I.D.F.)
1976 Part time family practitioner in rural settlements in the Jordan Valley.
1978-1982 & 1984-1985 Specialized in internal medicine at the Hadassah University Hospitals, and certified specialist.
1979 Member, I.D.F./Governmental Israeli medical delegation to Cambodian refugee camp, Sakeo, Thailand.
1982-1983 Service in the I.D.F. as a senior medical officer (lieutenant colonel).
1986-1989 Head of the Emergency Services, in charge of the Medical and Hematological Day Care Unit and an attending senior physician in the Department of Medicine in the Hadassah University Hospital, Mt Scopus, Jerusalem.
1988 Member, the Israeli Army medical relief team to Soviet Armenia.
1989-1991 Research fellow in Medicine (renal pathophysiology, sponsored by FH Epstein MD), The Charles A. Dana Research Institute and the Harvard-Thorndike Laboratory of Beth Israel Hospital, Harvard Medical School, Boston.
1991-1993 Service in the Israel Defense Forces. In charge of the medical systems in the Northern Command (full colonel).
1993 - present Senior physician, Department of Medicine, Hadassah University Hospital, Mt. Scopus, Jerusalem
1994 M.A.S.H. Commander, IDF mission for Rwandan refugees, Goma, Zaire.
1997-1998 Active Head of the Department of Medicine, Hadassah University Hospital, Mt. Scopus, Jerusalem.
2000 Team-head, medical relief operation, Northern Wollo, Ethiopia (Jewish Agency)
2003- present Medical Director, Bayer House for the Aged (a 200-beds nursing home)
2003-present Head, Academic Division of Internal Medicine (and related sub-specialties), the Hebrew University Medical School
1998-2000 and2003-present Member of Senate, the Hebrew University, Jerusalem