There are very few doctors in Singapore who have done doctorate
degree in Medicine in Singapore.
Dr. Tan Han Khim 
MBBS, MRCP (UK), FAMS, MD (S'pore)
Dr Tan is a renal senior consultant in SGH.
http://www.sgh.com.sg/doctors/sgh_TanHanKhim
Note : The abbreviation of Doctorate degree in Medicine in
Singapore is MD,
not PHD
in medicine
Hi Lee012lee,
Thank you for the clarification and sharing. I initially thought
that a PhD in Medicine is offered in NUS as it is stated here that
Graduate students will graduate with a MSc or a PhD degree:
http://medicine.nus.edu.sg/corporate/youare_graduate.html
Cheers.