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Clin Asst Prof Anthony Yii Chau Ang

Clin Asst Prof Yii

BA, MB BChir (Cambridge), MA, MRCP (UK)


Changi General Hospital

Specialty: Respiratory Medicine

Conditions Treated by this Doctor:
Asthma , Bronchiectasis , Chronic Obstructive Pulmonary Disease (COPD) , Interstitial Lung Disease , Lung Cancer , Lung Nodules , Pleural Diseases , Pneumonia , Pneunomia , Pulmonary Embolism , Severe Asthma .

Clinical Appointments

  • Consultant Respiratory & Critical Care Medicine Changi General HospitalChangi General Hospital


Dr. Anthony Yii earned his medical degree from the University of Cambridge (UK) in 2009 and subsequently completed his specialty training in respiratory medicine in 2017. His scope of practice includes airway diseases (asthma, chronic obstructive pulmonary disease and bronchiectasis and pulmonary infections), interstitial lung disease, noninvasive ventilation, pleural diseases, diagnosis of lung cancer and bronchoscopy.

Apart from his clinical commitments, Dr Yii is active in pulmonology research with a focus on airway diseases and allergy and has been an invited reviewer for several international medical journals.


  • 2017 - Respiratory Medicine Specialist Accreditation Board
  • 2013 - MRCP (UK)
  • 2009 - MB BChir (Cambridge)
  • 2006 - BA (Hons.) in Medical and Veterinary Sciences Tripos

Professional Appointments and Committee Memberships

  • Adjunct Research Fellow - Duke-NUS Medical School
  • Clinical Assistant Professor - Duke-NUS
  • Member - Serious Reportable Events Committee Changi General Hospital, 2017
  • Physician Faculty - SingHealth Respiratory Medicine Senior Residency


  • 2017 - Outstanding Resident Award, Singhealth Respiratory Medicine Senior Residency
  • 2015 - Outstanding Resident Award, Singhealth Respiratory Medicine Senior Residency
  • 2015 - Singapore Thoracic Society Fellows’ Challenge 2015: 1st place

Research Interests

  • Airways Diseases in Asthma and COPD
  • Respiratory Epidemiology
  • Respiratory Health Services Research



  1. Yii ACA, Tan JHY, Lapperre TS, Chan AKW, Low SY, Ong TH, et al. Long-term future risk of severe exacerbations: Distinct 5-year trajectories of problematic asthma. Allergy. 2017
  2. Goh KJ, Yii ACA, Lapperre TS, Chan AK, Chew FT, Chotirmall SH, et al. Sensitization to Aspergillus species is associated with frequent exacerbations in severe asthma. Journal of Asthma and Allergy. 2017;10:131-40.
  3. Nguyen HV, Bose S, Mital S, Yii AC, Ang SY, Lam SS, et al. Is bronchial thermoplasty cost-effective as treatment for problematic asthma patients? Singapore's perspective on a global model. Respirology. 2017
  4. Poh TY, Mac Aogain M, Chan AK, Yii AC, Yong VF, Tiew PY, et al. Understanding COPD-overlap syndromes. Expert Review of Respiratory Medicine. 2017;11(4):285-98
  5. Koh MS, Yii AC, Ong YY. Asthma in Singapore: Past, Present and Future. Annals of the Academy of Medicine, Singapore. 2017;46(3):81-3
  6. Yii AC, Koh MS, Lapperre TS, Tan GL, Chotirmall SH. The emergence of Aspergillus species in chronic respiratory disease. Frontiers in Bioscience. 2017;9:127-38
  7. Norgett EE, Yii A, Blake-Palmer KG, Sharifian M, Allen LE, Najafi A, et al. A role for VAX2 in correct retinal function revealed by a novel genomic deletion at 2p13.3 causing distal Renal Tubular Acidosis: case report. BMC Medical Genetics. 2015;16:38
  8. Yii AC, Tan GL, Tan KL, Lapperre TS, Koh MS. Fixed airways obstruction among patients with severe asthma: findings from the Singapore General Hospital-Severe Asthma Phenotype Study. BMC Pulmonary Medicine. 2014;14:191
  9. Yii AC, Koh MS. A review of psychological dysfunction in asthma: affective, behavioral and cognitive factors. The Journal of Asthma. 2013;50(9):915-21

Research Trials