• Chief in medical intensive unit
• chief of hyperbaric oxygen center

• Asthma,
• Pulmonary TB,
• chronic obstructive airway disease
• lung cancer
• Sepsis and acute respiratory failure
• palliative care medicine in critical care
• hyperbaric oxygen therapy

• National Taiwan University college of medicine

• National Taiwan University Hospital Resident (1996-2001)
• Institute of health policy and management, NTU(2011~2018)