| Name | College | Chapter | Registered Specialty | |
|---|---|---|---|---|
| Robert Shields | ||||
| Shim Weng Hoh Timothy | College of Surgeons | Chapter of Plastic, Reconstructive and Aesthetic Surgeons | Plastic Surgery | |
| Mike Shooter | ||||
| Shree Kumar Dinesh | College of Surgeons | Chapter of Neurosurgeons | Neurosurgery | |
| Shum Cheuk Fan | College of Surgeons | Chapter of Urologists | Urology | |
| Shum Jin-Wen Eugene | College of Public Health & Occupational Physicians | Public Health | ||
| Shwe Tin | College of Physicians | Chapter of Cardiologists | Cardiology | |
| Sia Tiong Heng Alex | College of Anaesthesiologists | Chapter of Intensivists | Anaesthesiology, Intensive Care Medicine | |
| Sia Wei Tee | College of Surgeons | Chapter of Hand Surgeons | Hand Surgery | |
| Sia Ching Hui | College of Physicians | Chapter of Cardiologists | Cardiology | |
| Siak Chong Leng | College of Paediatrics and Child Health | Paediatric Medicine | ||
| Siak Jyh Kuen Jay | College of Ophthalmologists | Ophthalmology | ||
| Siantar Rosalynn Grace | College of Ophthalmologists | Ophthalmology | ||
| Siaw Tung Yeng | Chapter of Family Medicine Physicians | Family Medicine | ||
| Siddiqui Mohd Mashfiqul Arafin | College of Surgeons | Chapter of Orthopaedic Surgeons | Orthopaedic Surgery | |
| Sidhu Harvinder Raj Singh | College of Surgeons | Chapter of General Surgeons | General Surgery | |
| Nicole Sie Ming | College of Ophthalmologists | Ophthalmology | ||
| Sieow Yu-Fang Nicole | College of Physicians | Chapter of Respiratory Physicians, Chapter of Intensivists | Respiratory Medicine, Intensive Care Medicine | |
| Siew Hin Chin | College of Psychiatrists | Psychiatry | ||
| Siew Ka Fai Stephen | College of Surgeons | Chapter of Hand Surgeons | Hand Surgery | |
| Si Hoe Kok Chun | College of Anaesthesiologists | Anaesthesiology | ||
| Si-Hoe Kok Soon | College of Dental Surgeons | Chapter of Periodontists | Periodontics | |
| Si-Hoe Cheng Kit | College of Radiologists | Chapter of Diagnostic Radiologists | Diagnostic Radiology | |
| Sim Hong Gee | College of Surgeons | Chapter of Urologists | Urology | |
| Sim Tiong Beng | College of Emergency Physicians | Section of Geriatric Emergency Medicine | Emergency Medicine |