| Name | College | Chapter | Registered Specialty | |
|---|---|---|---|---|
| Oon Hwee Boon Hazel | College of Physicians | Chapter of Dermatologists | Dermatology | |
| Oon Chong Lin | College of Radiologists | Chapter of Diagnostic Radiologists | Diagnostic Radiology | |
| Oon Zhi Hao | College of Anaesthesiologists | Chapter of Pain Medicine Physicians | Anaesthesiology | |
| Claude H Organ | ||||
| Osmany Saabry Yusof | College of Radiologists | Chapter of Nuclear Medicine Physicians | Nuclear Medicine | |
| Ou Yang Youheng | College of Surgeons | Chapter of Orthopaedic Surgeons | Orthopaedic Surgery | |
| Ow Kok Keng, Richard | College of Dental Surgeons | Chapter of Prosthodontists | Prosthodontics | |
| Andrew Ow Tjin-Chiew | College of Dental Surgeons | Chapter of Oral & Maxillofacial Surgeons | Oral & Maxillofacial Surgery | |
| P Buvanaswari | College of Psychiatrists | Psychiatry | ||
| Pakdeethai Janthorn | College of Physicians | Chapter of General Physicians | Internal Medicine | |
| Palaniappan, Thiagarajan | College of Surgeons | Chapter of Orthopaedic Surgeons | Orthopaedic Surgery | |
| Palanisamy Arul Murugan | College of Surgeons | Chapter of Orthopaedic Surgeons | Orthopaedic Surgery | |
| Palayan Kandasami | ||||
| Paliwal Prakash Rameshchandra | College of Physicians | Chapter of Neurologists | Neurology | |
| Pall Singh | ||||
| Pan Beng Siong, Andrew | College of Physicians | Chapter of Neurologists, Chapter of Sleep Medicine Physicians | Neurology | |
| Pan Chuan-Hsin, James | College of Ophthalmologists | Ophthalmology | ||
| Pan Ling Te Terry | College of Anaesthesiologists | Anaesthesiology | ||
| Pandit Nihar | College of Physicians | Chapter of General Physicians | Internal Medicine | |
| Garvi Jagdishchandra Pandya | College of Physicians | Chapter of General Physicians, Chapter of Sleep Medicine Physicians | Internal Medicine | |
| Pang Yuan Ching Audrey | College of Ophthalmologists | Ophthalmology | ||
| Pang Chee Ping, Edward | College of Anaesthesiologists | Anaesthesiology | ||
| Pang Yi Kit Philip | College of Surgeons | Chapter of Cardiothoracic Surgeons | Cardiothoracic Surgery | |
| Pang Claudine Elizabeth | College of Ophthalmologists | Ophthalmology | ||
| Pang Pee Hwee | College of Physicians | Chapter of Respiratory Physicians, Chapter of Intensivists | Respiratory Medicine, Intensive Care Medicine |