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Asst Prof Dariusz Piotr Olszyna

  • Head & Senior Consultant, Division of Advanced Internal Medicine, Department of Medicine, National University Hospital
  • Senior Consultant, Division of Infectious Diseases, Department of Medicine, National University Hospital
  • Senior Consultant
  • Assistant Professor, Yong Loo Lin School of Medicine, National University of Singapore
Advanced Internal Medicine, Infectious Diseases
Special Interests:
​HIV Treatment (Rapid ART), HIV Prevention (PrEP, Treatment as Prevention), Viral hepatitis


Dr Olszyna received his medical degree from the University of Amsterdam in the Netherlands. He completed his advanced medical specialty training in internal medicine and infectious diseases at the Academic Medical Center in Amsterdam. In 2001, he was awarded a PhD in medicine from the University of Amsterdam.

Dr Olszyna has been working in the field of HIV for more than 10 years, both in clinical care of people living with HIV/AIDS as well as in teaching. His clinical interests beyond HIV/AIDS are viral hepatitis B and C with particular interest in HIV/hepatitis C co-infections.

Dr. Olszyna joined the Division of Infectious Diseases at the National University Hospital (NUH) in 2008. He is one of the co-founders of the HIV service in NUH. Dr Olszyna serves as the Programme Director of the National University Health System’s (NUHS) Advanced Internal Medicine Senior Residency and Associate Programme Director of the NUHS Internal Medicine Residency. Dr. Olszyna also serves as the Vice Chairman Medical Board for the Medical Affairs Education Office at Alexandra Hospital.

Research interests:
HIV/AIDS, Hepatitis B and Hepatitis C

Journals & Publications

When Traditional Model Meets Competencies in Singapore: Beyond Conflict Resolution. Ann Acad Med Singapore 2014: Vol 43, No 11.
Localization of Staphylococcus lugdunensis Clavicular Osteomyelitis Using FDG-PET/CT. Am J Med. 2016 Mar;129(3):e9-11.
Hepatitis B and C virus infections among patients with end stage renal disease in a low-resourced hemodialysis center in Vietnam: a cross-sectional study. BMC Public Health. 2015 Feb 27;15:192.
Challenges of hemodialysis in Vietnam: experience from the first standardized district dialysis unit in Ho Chi Minh City. BMC Nephrol. 2015 Aug 1;16:122.

Implementation and Effectiveness of the Asia Pacific HIV Practice Course: Building Capacity of Healthcare Workers in the Region. Open Forum Infect Dis. v5(Suppl 1) 2018 Nov.

Responding To COVID-19: how an academic infectious diseases division mobilized in Singapore. BMC Medicine. 2020 Jun 18:179.

Recommendations for the use of antiretroviral therapy in adults living with HIV in Singapore. Singapore Med J. 2022 Apr.

Guidance for the prescription of human immunodeficiency virus pre-exposure prophylaxis in Singapore. Singapore Med J. 2022 Apr.

Same-day and rapid initiation of antiretroviral therapy in people living with HIV in Asia. How far have we come? HIV Med. 2022 Oct Suppl 4:3-14.

National HIV Programme Testing Recommendations Singapore Med J., May 2023.

Professional Memberships

​International AIDS Society, European AIDS Clinical Society, Netherlands Society of HIV Practitioners, Netherlands Internists Society, Academy of Medicine, Singapore


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