Over the course of work, A/Prof Koh has received numerous academic, service and quality improvement awards both in hospital and public service.
- Best Residency Program Director Award 2019
- Best Residency Program Award 2019, 2021
- SingHealth GCEO Excellent Award 2016: Outstanding Educator
- SingHealth Duke-NUS Golden Apple Innovative Program Award
- SingHealth Academy Golden Apple Outstanding Creative Educator Award
- National University of Singapore Dean's Award for Teaching Excellence
- National University of Singapore MedSoc Distinguished Educator (Outstanding Tutor) Award 2016
- National University of Singapore Leadership Academic Medicine Award
- Public Healthcare Clinician Special Recognition Award 2013
- Best Clinical Practice Improvement Program Award (SingHealth)
- Clinical Practice Improvement Program Merit Award (NHG)
- Singapore General Hospital Making-A-Difference Award
- Singapore General Hospital Service Quality Awards
- Singapore General Hospital Service-with-A-Heart Awards
- Courage Award for SARS Warriors, 2003
- Good Service Award, Singapore Civil Defence Force