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Dr How Choon How of Changi General Hospital

Clin Assoc Prof How Choon How

MBBS (NUS), MMed (Family Medicine, FCFP (Singapore), Masters of Clinical Investigation (NUS)

Senior Consultant

Specialty: Family Medicine

Clinical Appointments

  • Head of Division Care & Health Integration Changi General HospitalChangi General Hospital
  • Senior Consultant Care & Health Integration Changi General HospitalChangi General Hospital
  • Visiting Consultant SingHealth PolyclinicsSingHealth Polyclinics


​Dr How Choon How is a family physician who practices at Changi General Hospital (CGH) as a senior consultant and at SingHealth Polyclinics as a visiting consultant. His clinical research interests include primary care, health literacy, quality of life and elderly nutrition. He enjoys exchanging ideas at national and international forums and has been widely published in peer-reviewed journals and a medical book chapter. Dr How is also a specialty editor in Singapore Medical Journal since 2012 and is the head of division for Care & Health Integration.


  • ​Master of Clinical Investigation (NUS)
  • FCFP (Singapore)
  • MMed (Family Medicine)
  • MBBS (NUS)

Professional Appointments and Committee Memberships

  • Adjunct Assistant Professor - Dept of Medicine, NUS
  • Adjunct Assistant Professor - SUTD
  • Clinical Associate Professor - FM-ACP, Duke-NUS Graduate Medical School
  • ​Director - Primary Care Programme, SingHealth RHS
  • Director - Transitional Care, Family Medicine, Academic Clinical Programme
  • Specialty Editor - Singapore Medical Journal
  • Instructor - Advanced Trauma Life Support
  • Director, SingHealth Office of Regional Health, Changi General Hospital Campus
  • Medical Assessor, Civil Aviation Medical Board, Civil Aviation Authority Singapore


  • ​2009 - MOH Healthcare Research Scholarship, MCI Programme
  • 2008 - SingHealth Best Medical Officer Award
  • 2007 - SingHealth Best Medical Officer Award (Inaugural Award)

Research Interests

  • Family Medicine


1.  Chan HBY, How CH, and Ng CW. 2017. "Definitive Tests For Dengue Fever: When And Which Should I Use?". Singapore Medical Journal 58 (11): 632-635. doi:10.11622/smedj.2017100.

2.  Poulose V, How CH. Authors' reply. Singapore Med J. 2017 Sep;58(9):573. doi: 10.11622/smedj.2017091. No abstract available. PMID: 28948290

3.  Ng CW, How CH, Ng YP. Managing depression in primary care.Singapore Med J. 2017 Aug;58(8):459-466. doi: 10.11622/smedj.2017080.PMID: 28848991

4.  Mok Y, Tan CW, Wong HS, How CH, Tan KL, Hsu PP. Obstructive sleep apnoea and Type 2 diabetes mellitus: are they connected? Singapore Med J. 2017 Apr;58(4):179-183. doi: 10.11622/smedj.2017027.PMID: 28429032

5.  Ng CW, How CH, Ng YP. Depression in primary care: assessing suicide risk. Singapore Med J. 2017 Feb;58(2):72-77. doi: 10.11622/smedj.2017006.PMID: 28210741

6.  Ng CW, How CH, Ng YP. Major depression in primary care: making the diagnosis. Singapore Med J. 2016 Nov;57(11):591-597. doi: 10.11622/smedj.2016174. PubMed PMID: 27872937.

7.  Ang D, How CH, Ang TL. Persistent gastro-oesophageal reflux symptoms despite proton pump inhibitor therapy. Singapore Med J. 2016 Oct;57(10):546-551. doi:10.11622/smedj.2016167. PubMed PMID: 27779277; PubMed Central PMCID: PMC5075954.

8.  How CH, Phua See Chun P, Shafi F, Jakes RW. Parental knowledge, attitudes and perception of pneumococcal disease and pneumococcal conjugate vaccines in Singapore: a questionnaire-based assessment. BMC Public Health. 2016 Sep 2;16:923. doi: 10.1186/s12889-016-3597-5. PubMed PMID: 27590503; PubMed Central PMCID: PMC5010741.

9.  Tan NC, Tan MS, Hwang SW, Teo CC, Lee ZK, Soh JY, Koh YL, How CH. Sleep time and pattern of adult individuals in primary care in an Asian urbanized community: A cross-sectional study. Medicine (Baltimore). 2016 Aug;95(35):e4749. doi: 10.1097/MD.0000000000004749. PubMed PMID: 27583923; PubMed Central PMCID: PMC5008607.

10.Ong ZY, Chai HZ, How CH, Koh J, Low TB. A simplified approach to haemoptysis. Singapore Med J. 2016 Aug;57(8):415-8. doi: 10.11622/smedj.2016130. PubMed PMID: 27549136; PubMed Central PMCID: PMC4993964.

11.Goh LH, How CH, Ng KH. Failure to thrive in babies and toddlers. Singapore Med J. 2016 Jun;57(6):287-91. doi: 10.11622/smedj.2016102. PubMed PMID: 27353148;PubMed Central PMCID: PMC4971446.

12.Puar TH, Mok Y, Debajyoti R, Khoo J, How CH, Ng AK. Secondary hypertension in adults. Singapore Med J. 2016 May;57(5):228-32. doi: 10.11622/smedj.2016087.PubMed PMID: 27211205; PubMed Central PMCID: PMC4876411.

13.Lim AT, How CH, Tan B. Management of plantar fasciitis in the outpatient setting. Singapore Med J. 2016 Apr;57(4):168-70; quiz 171. doi: 10.11622/smedj.2016069. PubMed PMID: 27075037; PubMed Central PMCID: PMC4853481.

14.Poulose V, Tiew PY, How CH. Approaching chronic cough. Singapore Med J. 2016 Feb;57(2):60-3. doi: 10.11622/smedj.2016028. Review. PubMed PMID: 26892615;PubMed Central PMCID: PMC4759375.

15.Tan NC, Mitesh S, Koh YL, Ang SB, Chan HH, How CH, Tay EG, Hwang SW.Evaluation of a training programme to induct medical students in delivering public health talks. Singapore Med J. 2017 Jan;58(1):35-40. doi:10.11622/smedj.2016043. PubMed PMID: 26891745.

16.How CH. Novel oral anticoagulants for atrial fibrillation. Singapore Med J. 2015 Dec;56(12):657-8; quiz 659. doi: 10.11622/smedj.2015184. PubMed PMID: 26702159; PubMed Central PMCID: PMC4678403.

17.Ng MC, How CH. When babies turn yellow. Singapore Med J. 2015 Nov;56(11):599-602; quiz 603. doi: 10.11622/smedj.2015167. Review. PubMed PMID: 26668403; PubMed Central PMCID: PMC4656866.

18.Gani LU, How CH. Authors' reply: Vitamin D deficiency. Singapore Med J. 2015  Oct;56(10):589. doi: 10.11622/smedj.2015157. PubMed PMID: 26512154; PubMed Central PMCID: PMC4613938.

19.Choo KW, Lee WL, How CH, Ng BY. Hoarding in Singapore. Singapore Med J. 2015 Sep;56(9):484-6; quiz 487. doi: 10.11622/smedj.2015131. PubMed PMID: 26464529;PubMed Central PMCID: PMC4582126.

20.Lauw M, How CH, Loh C. Authors' reply: Deliberate self-harm in adolescents. Singapore Med J. 2015 Sep;56(9):531. doi: 10.11622/smedj.2015142. PubMed PMID:26451058; PubMed Central PMCID: PMC4582136.

21.Gani LU, How CH. PILL Series. Vitamin D deficiency. Singapore Med J. 2015 Aug;56(8):433-6; quiz 437. doi: 10.11622/smedj.2015119. PubMed PMID: 26311908; PubMed Central PMCID: PMC4545131.

22.Kui SL, How CH, Koh J. PILL Series. The 'problematic' asthma patient. Singapore Med J. 2015 Jul;56(7):368-71; quiz 372. doi: 10.11622/smedj.2015106. PubMed PMID: 26243972; PubMed Central PMCID: PMC4520914.

23.Lauw M, How CH, Loh C. PILL Series. Deliberate self-harm in adolescents.Singapore Med J. 2015 Jun;56(6):306-8; quiz 309. doi: 10.11622/smedj.2015087.PubMed PMID: 26106236; PubMed Central PMCID: PMC4469847.

24.Luo N, Wang Y, How CH, Tay EG, Thumboo J, Herdman M. Interpretation and use of the 5-level EQ-5D response labels varied with survey language among Asians in Singapore. J Clin Epidemiol. 2015 Oct;68(10):1195-204. doi:10.1016/j.jclinepi.2015.04.011. PubMed PMID: 26032149.

25.Hui S, How CH, Tee A. Does this patient really have chronic obstructive pulmonary disease? Singapore Med J. 2015 Apr;56(4):194-6; quiz 197. Review. PubMed PMID: 25917469; PubMed Central PMCID: PMC4415097.

26.How CH, Hsu PP, Tan KL. Recognising sleep apnoea. Singapore Med J. 2015 Mar;56(3):129-32; quiz 144. PubMed PMID: 25820844; PubMed Central PMCID: PMC4371191.

27.How CH, Koh LH. PILL series. Not that way: advance care planning. Singapore Med J. 2015 Jan;56(1):19-21; quiz 22. PubMed PMID: 25640095; PubMed Central PMCID: PMC4325571.

28.Rajkumar V, Rajendra B, How CH, Ang SB. Wheeze in childhood: is the spacer good enough? Singapore Med J. 2014 Nov;55(11):558-62; discussion 563. PubMed PMID: 25631964; PubMed Central PMCID: PMC4294002.

29.How CH, Quah HM. Authors' reply: Are we any clearer on the blood pressure targets? Singapore Med J. 2014 Oct;55(10):554. PubMed PMID: 25631902;PubMed Central PMCID: PMC4293975.

30.How CH, Tan KJ. Doctor, I sprained my ankle. Singapore Med J. 2014 Oct;55(10):522-4; quiz 525. PubMed PMID: 25631892; PubMed Central PMCID: PMC4293961.

31.Luo N, Wang Y, How CH, Wong KY, Shen L, Tay EG, Thumboo J, Herdman M. Cross-cultural measurement equivalence of the EQ-5D-5L items for English-speaking Asians in Singapore. Qual Life Res. 2015 Jun;24(6):1565-74. doi:10.1007/s11136-014-0864-8. PubMed PMID: 25394895.

32.Luo N, Wang Y, How CH, Wong KY, Tay EG, Thumboo J. A Comparison of Three Language Versions of the EQ-5D-5L Dimension Scales in Singapore. Value Health. 2014 Nov;17(7):A731. doi: 10.1016/j.jval.2014.08.081. PubMed PMID: 27202614.

33.How CH, Quah HM. Doctor, do I really need treatment for my current blood pressure? Singapore Med J. 2014 Aug;55(8):401-3; quiz 404. PubMed PMID: 25189299;PubMed Central PMCID: PMC4294087.

34.Goh LH, How CH, Lau TC. Male osteoporosis: clinical approach and management in family practice. Singapore Med J. 2014 Jul;55(7):353-7. PubMed PMID: 25091882;PubMed Central PMCID: PMC4291959.

35.Ng MC, How CH. Recurrent wheeze and cough in young children: is it asthma? Singapore Med J. 2014 May;55(5):236-41. PubMed PMID: 24862744; PubMed Central PMCID: PMC4291977.

36.Ong C, Phuah KY, Salazar E, How CH. Managing the 'picky eater' dilemma. Singapore Med J. 2014 Apr;55(4):184-9; quiz 190. PubMed PMID: 24763833; PubMed Central PMCID: PMC4291945.

37.How CH, Chan WS. Headaches in children. Singapore Med J. 2014 Mar;55(3):128-30; quiz 131. PubMed PMID: 24664378; PubMed Central PMCID: PMC4293983.

38.How CH, Fock KM. Healthcare in Singapore: the present and future. Singapore Med J. 2014 Mar;55(3):126-7. Erratum in: Singapore Med J. 2014 Apr;55(4):234.PubMed PMID: 24664377; PubMed Central PMCID: PMC4293982.

39.How CH. Let it go. Singapore Med J. 2014 Mar;55(3):109. PubMed PMID:  24664373; PubMed Central PMCID: PMC4293978.

40.Ng MC, How CH. Childhood immunisation. Singapore Med J. 2014 Jan;55(1):12-7. PubMed PMID: 24452972; PubMed Central PMCID: PMC4291905.

41.How CH, Chan HN. Insomnia in the community. Singapore Med J. 2013 Dec;54(12):662-5. PubMed PMID: 24356750.

42.Wong PY, How CH, Wong PC. PILL series. Management of child abuse. Singapore Med J. 2013 Oct;54(10):533-6; quiz 537. Review. PubMed PMID: 24154576.

43.Umboh SJ, How CH, Chen H. Postnatal depression: a family medicine perspective. Singapore Med J. 2013 Sep;54(9):477-9; quiz 480-1. Review. PubMed PMID: 24068053.

44.How CH, Quah HM. PILL series. Managing urinary incontinence in the community. Singapore Med J. 2013 Aug;54(8):420-4. Review. PubMed PMID: 24005447.

45.Tan GC, De Roza J, Chen RY, How CH. Diabetes mellitus: the first visit. Singapore Med J. 2013 Jul;54(7):377-80; quiz 381. PubMed PMID: 23900466.

46.Law KH, How CH, Ng CS, Ng MC. PILL series. Prescribing health: exercise. Singapore Med J. 2013 Jun;54(6):303-8. PubMed PMID: 23820539.

47.Quah JH, Liu YP, Luo N, How CH, Tay EG. Younger adult type 2 diabetic patients have poorer glycaemic control: a cross-sectional study in a primary care setting in Singapore. BMC Endocr Disord. 2013 Jun 3;13:18. doi:10.1186/1472-6823-13-18. PubMed PMID: 23725198; PubMed Central PMCID: PMC3674913.

48.How CH, Quah JH, Koh MJ. Simply eczema. Singapore Med J. 2013 May;54(5):247-9; quiz 250. PubMed PMID: 23716147.

49.Chiou FK, How CH, Ong C. Recurrent abdominal pain in childhood. Singapore Med J. 2013 Apr;54(4):195-9; quiz 200. PubMed PMID: 23624445.

50.Goh IX, How CH, Tavintharan S. Cytochrome P450 drug interactions with statin  therapy. Singapore Med J. 2013 Mar;54(3):131-5. PubMed PMID: 23546024.

51.Ang SB, How CH. Menopause: an important milestone in women's health. Singapore Med J. 2013 Feb;54(2):60-3. PubMed PMID: 23462827.

52.Chee FY, How CH. Doctor, my dentist wants your opinion. Singapore Med J. 2013 Jan;54(1):11-3; quiz p.14. PubMed PMID: 23338910.

53.How CH, Chang NK. PILL series. What is my ideal diabetes target? Singapore Med J. 2012 Dec;53(12):778-80; quiz p. 781. Review. PubMed PMID: 23268148.

54.Quah CH, Koh D, How CH, Quah JH. Approach to hand dermatitis in primary care. Singapore Med J. 2012 Nov;53(11):701-4; quiz p.705. PubMed PMID: 23192494.

55.Chang CN, How CH, Tavintharan S. Beyond low-density lipoprotein cholesterol:  why, who and when. Singapore Med J. 2012 Sep;53(9):566-8; quiz 569. PubMed PMID:  23023895.

56.Teng GG, Tong CY, How CH, Goh LH. The unwelcome visitor. Singapore Med J. 2012 Aug;53(8):508-11; quiz 512. Review. PubMed PMID: 22941126.

57.Tan GJ, Lim EL, How CH. A guide to requesting outpatient and emergency radiographs. Singapore Med J. 2012 Jul;53(7):423-6; quiz 427. PubMed PMID:22815007.

58.Koh JM, Tan GJ, How CH. PILL series. The solitary pulmonary nodule. Singapore Med J. 2012 Jun;53(6):372-5; quiz 376. PubMed PMID: 22711034.

59.Luo N, Cang SQ, Quah HM, How CH, Tay EG. The discriminative power of the EuroQol visual analog scale is sensitive to survey language in Singapore. Health  Qual Life Outcomes. 2012 Mar 20;10:32. doi: 10.1186/1477-7525-10-32. PubMed PMID: 22429829; PubMed Central PMCID: PMC3365872.

60.Quah JH, Luo N, Ng WY, How CH, Tay EG. Health-related quality of life is associated with diabetic complications, but not with short-term diabetic control in primary care. Ann Acad Med Singapore. 2011 Jun;40(6):276-86. PubMed PMID: 21779616.

61.How CH. A Review of Health Literacy: Problem, Tools and Intervention. Proceedings of Singapore Healthcare. 2011;20:2:119-125.

62.How CH. Ideal Blood Glucose Control for Type 2 Diabetes Management — A New Clinical Equipoise. Proceedings of Singapore Healthcare. 2011;20:2:115-118.

63.How C, Tee A, Quah J. Presentation of gastrothorax masquerading as pneumothorax. Prim Care Respir J. 2006 Nov 8 PubMed PMID: 17097345.

Research Trials