| Name | College | Chapter | Registered Specialty | |
|---|---|---|---|---|
| Sim Kwang Yong, Christopher | College of Dental Surgeons | Chapter of Prosthodontists | Prosthodontics | |
| Sim Poh Choo, Christina | College of Dental Surgeons | Chapter of Prosthodontists | Prosthodontics | |
| Sim Li Ping | College of Psychiatrists | Psychiatry | ||
| Sim Richard | College of Surgeons | Chapter of General Surgeons | General Surgery | |
| Sim Peng Chuan, Timothy | College of Dental Surgeons | Chapter of Endodontists | Endodontics | |
| Sim Sze Keen | College of Paediatrics and Child Health | Paediatric Medicine | ||
| Sim Hong Gee | College of Surgeons | Chapter of Urologists | Urology | |
| Sim Kang | College of Psychiatrists | Psychiatry | ||
| Sim Guat Bee Irene | College of Dental Surgeons | Chapter of Endodontists | Endodontics | |
| Sim Soon Phang Allen | College of Surgeons | Chapter of Urologists | Urology | |
| Sim Tiong Beng | College of Emergency Physicians | Section of Geriatric Emergency Medicine | Emergency Medicine | |
| Sim Xiangrong Bryan | College of Ophthalmologists | Ophthalmology | ||
| Sin Gwen Li | College of Psychiatrists | Section of Neuropsychiatry, Chapter of Sleep Medicine Physicians | Psychiatry | |
| Sin Yoong Kong, Kenny | College of Surgeons | Chapter of Cardiothoracic Surgeons | Cardiothoracic Surgery | |
| Kijja Sindhvananda | ||||
| Singh Shekhawat Ravindra | College of Physicians | Chapter of Neurologists | Neurology, Neurology | |
| Singh Baldev s/o Gulzar Singh | College of Physicians | Chapter of Cardiologists, Chapter of Intensivists | Cardiology, Intensive Care Medicine | |
| Singh Hardip | College of Surgeons | Chapter of Cardiothoracic Surgeons | Cardiothoracic Surgery | |
| Singh Tripti | College of Physicians | Chapter of Renal Physicians | Renal Medicine | |
| Prit Anand Singh | College of Anaesthesiologists | Anaesthesiology | ||
| Singh Dharambir | College of Surgeons | Chapter of Otorhinolaryngologists | Otorhinolaryngology | |
| Singh Sarbjit | College of Surgeons | Chapter of Orthopaedic Surgeons | Orthopaedic Surgery | |
| Rajinder Singh s/o Pall Singh | College of Physicians | Chapter of Neurologists | Neurology | |
| Singh Dhanwant | College of Physicians | Chapter of General Physicians | Internal Medicine | |
| Gurpal Singh | College of Surgeons | Chapter of Orthopaedic Surgeons | Orthopaedic Surgery |