I check with my auntie She said very good, her husband whole family children went there whenever their kids sick. The Doc name is Doc Ng at Ubi, contact no 67460909. Call to check their add and time. Another one is Spring Medical at Blk 39, Jln Tiga, #01-04, Tel 6247 7077 is at Old Airport Rd. This one i went myself when im sick, the doc very detail, my friend who live at sekang also went there. Hope it will help you.
Dr Zhang at Paddington Medical - she is very good with children! calming clinic environment also, Simpang Bedok, right beside Giant! not a PD, but a very calming and detailed GP! better than some pds actually!