||1977-1978 Intern, Hadassah Hospital, Jerusalem.
1981-1984 Residency in the Dept. of Neurology, Hadassah
1987-1989 Fellowship in Molecular Neurovirology, The Wistar Institute, University of Pennsylvania, Philadelphia, USA.
1982-1985 Instructor of Neurology
1985-1989 Lecturer of Neurology
1989-1994 Senior Lecturer of Neurology
1994-1999 Associate Professor of Neurology
1999 Professor of Neurology
1989 - Neurological Consultant, Head of Neurological service, Hadassah Mt. Scopus, Jerusalem.
1996 – 1999 Chairman, The Scientific Committee, Israel Neurological Association.
1998 – 2001 Chairman of the Board Examinations in Neurology Committee, Scientific Council, Israel Medical Association.
1999 - Chairman, Advisory Committee on Research, Hadassah University Hospital, Jerusalem.
2000 - Head, European Federation of Neurological Societies Task Force on Encephalitis
2000 – 2002 Assistant to the Dean and Chairman of the Committee for the Promotion of Combined Research, Faculty of Medicine, Hebrew university, Jerusalem
2002 - Councilor, Neuro-Infectious diseases section, American Academy of Neurology
||1992 -1998 Member of the Board Examinations in Neurology Committee, Israel Medical Association.
1996 – 1999 Member of the Board, Israel Neurological Association.
1998 - Member of the Institutional Helsinki Committee, Hadassah University Hospital, Jerusalem.
2000 - Member, Advisory Committee to the Chief scientist, Ministry of Health.
Memberships (selected list)
1986 - American Academy of Neurology.
1995 - European Neurological Society.
1999 - International Society for Neurovirology (founding member).
1999 - American Neurological Association