Additionally, he holds a watching brief role which gives him oversight over the Sarawak Health Department and the Sarawak Fire and Rescue Department, both agencies of the Malaysian federal government. He is also one of the founding Vice Chairmen of the GPS coalition, in which SUPP is a co-founding component party.
While acknowledging that the region of Sarawak is part of Malaysia, Sim is one of the most vocal and consistent proponents for more Sarawakian autonomous power and rights, based on the unique contexts of the Malaysia's formation as originally outlined in the Malaysia Agreement 1963 (MA63), Inter-Governmental Committee (IGC) Report and recommendations, and the Report of the Cobbold Commission.
Policy and legislative highlights
Sim has taken part in major policy decisions through the years. He was first to announce about the Sarawak Cabinet and then- Chief Minister Adenan Satem's decision to officially recognise the Unified Examination Certificate (UEC) of Chinese independent schools, embracing graduates of the system into joining Sarawak-owned universities, Sarawak government scholarships and even the Sarawak Civil Service (with national language qualifications).
He is a proponent of the Sarawak Cancer Centre (cancer hospital) initiative, and public-private partnership. He also formed a Sarawak Medical Committee (SMC) under the umbrella of the Malaysian Medical Council (MMC), while frequently invoking Sarawak's historical medical board framework to justify its unique structure as part of Sarawak Health Autonomy.
Among the legislative bills he tabled in, and passed by, the Sarawak Legislative Assembly include the Building (Amendment) Bill 2025, which includes the Sarawak Building Board (SBB), accredited checkers for structural design reviews, professional oversight for architects and engineers and qualified persons, and mandatory green building standards; and The Strata Management Bill 2019, which outlines provisions of mandatory maintenance; developer liability on unsold units; and mandate elected management committees for stratified buildings.
He is the creator behind the LA Serve initiative, which led major local authorities (LA) to set up 24-7 "Serve" fast responder squads. These field squads are among the first to arrive on the scene of local authority-related incidents to assess and assist.
Early life and education
Sim is the son of father Tan SriDatuk Amar Sim Kheng Hong (Chinese:沈庆鸿) who was the Deputy Chief Minister of Sarawak from 1974 to 1991; and mother Puan SriDatin Amar Lim Su Kheng (Chinese: 林素卿). He received his primary education at Chung Hua Primary School No.4 and his secondary education in St. Joseph's Secondary School, Kuching. After that, he completed his Higher School Certificate at St. Bede's College in Mentone, in Victoria, Australia. He graduated with an MBBS from Monash University's Alfred Medical School and completed his cardiology fellowship at Monash Medical Centre in Melbourne.
Early career
When Sim found out that the Sarawak General Hospital (SGH) was attempting to set up a cardiology unit, he left his practice and returned to Malaysia in 1998, after spending 17 years in Australia. In 2001, the Cardiology Department of SGH was set up. He was instrumental alongside Dr. Ong Tiong Kiam in the setting up of this cardiac services. The department had progressively evolved into a cardiology centre (SGH Heart Centre, which later renamed Sarawak Heart Centre) with its own standalone facilities in Kota Samarahan and a recognised training centre for cardiothoracic surgeons.
Sim's maiden contest for public office was in the 2011 Sarawak Elections which he lost. Five years later, he contested and won in the 2016 Sarawak Elections.
Research
Sim is a member in the Expert Writing Panel for Clinical Practise Guidelines on management in cardiovascular disease in Malaysia; a task force member of the International Commission on Radiological Protection (ICRP) on radiation protection in cardiology; and a member of International Atomic Energy Agency (IAEA)’s Expert Panel on Radiological Protection of Patients.
Between 1996 and 2015, he participated as either a faculty member or speaker for more than 200 professional meetings in the US, Europe and Asian-Pacific; made over 200 scientific abstract presentations; over 50 scientific publications (including NEJM); and over 125 clinical trials as a principal investigator.[citation needed] He received Clinical Research Malaysia (CRM) Leadership Award in 2024.
His research interests include cardiac CT, cardiac MRI, metabolic syndrome and ACS biomarkers in the multi-ethnic Asian community. He is a principal investigator/steering committee member in more than 100 multicentre clinical studies in Malaysia.
Professional credentials
Fellow of Royal Australasian College of Physicians (FRACP – Cardiology)
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Gabungan Parti Sarawak (GPS) (since 2018)
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