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Dr Hazel Teng Leng

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  • Associate Consultant, Division of Advanced Internal Medicine, Department of Medicine, Alexandra Hospital
  • Associate Consultant, Chronic Programme (Live Better), Alexandra Hospital
  • Associate Consultant, Department of Medicine, National University Hospital


MBBS (Singapore), MRCP (UK), MMed (Internal Medicine)


Internal Medicine

Clinical Disciplines/Programmes:

Advanced Internal Medicine, Medicine


Dr Hazel is an Associate Consultant at Alexandra Hospital (AH) and National University Hospital (NUH). She graduated from the National University of Singapore, Yong Loo Lin School of Medicine (YLLSoM) in 2017 and completed her specialty training in 2022. 

She is a Core Faculty member of the NUHS Advanced Internal Medicine Senior Residency Programme as well as a House Mentor for the Phase I and II medical students at the National University of Singapore. 

Dr Hazel is also one of the leads of the NUHS@Home programme, with the main focus on developing clinical pathways. NUHS@Home is one of the few hospital at home services available in Singapore. Established in 2020, the programme provides patients with hospital-level acute care from the comfort of their own homes.


  • 2019 - Junior Research Grant Award, Department of Medicine, NUH
  • 2020 - Residency Excellence Awards, Internal Medicine Residency, NUH

Journals & Publications

  1. Lim SC, Teng H, et al. Nurses' Attitude towards Usage of Physical Restraints in a Teaching Hospital in Singapore. Open Journal of Geriatrics 2019; 2: 29-35.
  2. Yan G, Lee CK, Lam LTM, Yan B, Chua YX, Lim AYN, Phang KF, Kew GS, Teng H, Ngai CH, Lin L, Foo RM, Pada S, Ng LC, Tambyah PA. Covert COVID-19 and false-positive dengue serology in Singapore. Lancet Infect Dis 2020; 20(5):536.
  3. Ngoh CLY, Teng H, Chua YT, Leo CCH, Wng WK. Comparison between lung ultrasonography and current methods for voume assessment in Asian chronic hemodialysis patients. Hemodial Int 2020; 24(4): 516-527
  4. Cross GB, Naftalin CM, Ngiam JN, Bagdasarian N, Poh CM, Goh YS, Chia WN, Amrun SN, Tham SM, Teng H, Alagha R, Kumar SK, Tan SSY, Wang LF, Tambyah PA, Renia L, Fisher D, Ng LFP. Discrepant serological findings in SARS-CoV-2 PCR-negative hospitalized patients with fever and acute respiratory symptoms during the pandemic. Journal of medical virology 2022; 94(6): 2460-2470.

Professional Memberships

  • Royal College of Physicians, United Kingdom

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National University Health System
  • National University Hospital
  • Ng Teng Fong General Hospital
  • Alexandra Hospital
  • Jurong Community Hospital
  • National University Polyclinics
  • Jurong Medical Centre
  • National University Cancer Institute, Singapore
  • National University Heart Centre, Singapore
  • National University Centre for Oral Health, Singapore
  • NUHS Diagnostics
  • NUHS Pharmacy
  • Yong Loo Lin School of Medicine
  • Faculty of Dentistry
  • Saw Swee Hock School of Public Health
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