Every Tuesday and Wednesday night, a long queue of migrant workers forms outside a small clinic in Geylang.
Consultation is free for special pass holders while work permit holders pay $5.
Dr Joshua Lam, 30, volunteers twice a month for two to three hours a night at this clinic run by non-profit organisation HealthServe, which provides low-cost medical care for migrant workers.
A doctor at the Institute of Mental Health, Dr Lam, who is single, has been a volunteer at HealthServe since July 2015, and sees around 15 to 20 patients per session at the night clinic. In this episode of Heroes Among Us, he talks about his experiences serving there.
WATCH THE VIDEO