Got it!! Thanks JandM!
Just to share information for those applying visitor visa under the dependent child category from Singapore, I did the medical for my baby at SATA COMMHEALTH UTTAMRAM MEDICAL CENTRE (BEDOK). Cost me S$115 (only medical examination, NO chest xray and NO blood test). It'll take 3-5 working days for the medical examination result to be uploaded in the eMedical system.
Call them up in advance to make an appointment. Come half an hour before your appointment time so you have time to do the registration. Bring along your child's passport and the father/mother's passport (whoever is the main applicant for the resident visa, in my case it's my hubby). Also bring along your child's health booklet.
They will take a photo of your child there. The examination itself is very fast. We completed everything in abt 1 hour time.
Hope this info is useful 😊