• 1994 until 2019 Head, Special Outpatient Clinic “Homeopathy in Malignant Diseases”, Department of Internal Medicine I, General Hospital of the City of Vienna

• 1992 until Feb. 2004Director, Intensivstation 13.i2, Klinik für Innere Medizin I
• 1994 until 1998 Medical Director Maimonides Center
• since May 1994 Vice President of the “Medical Society for Classical Homeopathy” (ÄKH)
• since Oct. 1995 Head of the Working Group for Homeopathy of the ÄKH in Vienna
• since Jan. 1998 Speaker of the ÄKH at training courses
• 1999 – 2012 Training Officer of the Austrian Society for Internal and General Intensive Care Medicine (ÖGIAIM)
• 2001 until 2019 Coordinator of the lecture series “Selected chapters and scientific discussion of complementary medicine methods,” Med. Univ. Vienna, VO 560480
• May 2002 – Dec. 2005Director of the Ludwig Boltzmann Institute for Homeopathy
• since June 2003 Member of the Scientific Advisory Board of the Vienna International Academy of Holistic Medicine
• 2004 until 2019 Expert in Airway Management and Homeopathy in Intensive Care Medicine at the Center of Excellence in Internal Critical Care Medicine (CEMIC).
• 2005 until 2019 Coordinator of the free elective “Homeopathy”, Med. Univ. Vienna, VO 562 923
• since June 2005 Director, Institute for Homeopathy Research
• 2006 until 2019 Member of the planning area + lecturer for the line element “Interdisciplinary Patient Management” (compulsory lecture for medical students)
• since June 2006 President of the Austrian Umbrella Association for Medical Holistic Medicine.
• since Nov. 2010 Chairman of the Scientific Society for Homeopathy (WissHom)
• 1986 Specialist for internal medicine
• 1989 Diploma emergency doctor
• 1990 Habilitation, Lecturer in Internal Medicine
• 1994 Specialist, Internal Intensive Care Medicine
• 1994 Professorship of Internal Medicine
• 1994 ÖÄK Diploma Complementary Medicine: Homeopathy
• 2011 ÖÄK Diploma Accompanying Cancer Treatment