Our Management
Dr Djeng Shih Kien
Biography:
Dr Djeng Shih Kien is our Executive Director and CEO, and he was appointed to the Board on 24 November 2011. He is a founder of our Company and is responsible for the overall business and strategic direction of our Group, having been particularly involved in the healthcare business for around the last 30 years. Dr Djeng Shih Kien is a dentist by training and has over 50 years of clinical and administrative experience in both the private and public services. He began his career as a dental houseman in Singapore General Hospital in 1971. In 1972, he joined the University of Singapore as a lecturer in the Department of Prosthetic Dentistry in the Faculty of Dentistry. Since 1981, he has been practising in his private dental practice at Ko Djeng Dental Centre, a multidisciplinary specialist dental group which has three clinics and 15 dentists, and is its Director. Dr Djeng Shih Kien is also the Managing Director of Orthodontic & Dental Supplies Pte Ltd which is a major supplier of orthodontic supplies and equipment. He has continued to be involved in academia, having been a part-time lecturer at the National University of Singapore from around 1982 to 1992, and a Visiting Adjunct Associate Professor at the Department of Oral and Maxillofacial Surgery till 2013, at the National University Hospital. Dr Djeng Shih Kien is also an experienced entrepreneur who, on top of his private practice, has been involved in a variety of businesses including in the healthcare and automobile industries. He was one of the founding partners of AsiaMedic Limited and its group of companies where, during his tenure as a director, he assisted to form key partnerships. Dr Djeng Shih Kien was awarded the Friend of Labour Award by the National Trades Union Congress in 1994, and the Pro-Enterprise Partner Award by the Ministry of Trade and Industry Singapore in 2017. Dr Djeng Shih Kien obtained his Bachelor of Dental Surgery from the University of Singapore in 1971. He pursued postgraduate training in orthodontics and obtained a Diploma in Dental Orthopaedics in 1975, and a Diploma of Fellowship in Dental Surgery in 1978, from the Royal College of Physicians and Surgeons of Glasgow. He was admitted a Member and Fellow of the Academy of Medicine, Singapore in 1979, and was entered on the Roll of Specialists of the Academy of Medicine, Singapore, in 2003. Dr Djeng Shih Kien was registered as a specialist in Orthodontics in 2008 by the Singapore Dental Council. |
Yeo Seng Lye Paul
Biography:
Mr Yeo Seng Lye Paul is our Executive Director and COO, and he was appointed to the Board on 26 June 2023. He oversees the ongoing operations, administrative and marketing functions of our Group. He has more than 20 years of business, management and administrative experience. Prior to joining our Group in 2020, Mr Yeo Seng Lye Paul was the regional brand general manager for the Asia Pacific region for the Estee Lauder Companies from 1999 to 2016. Prior to 1999, he was an area manager for the Asia Pacific region for Sanofi Beaute Pte. Ltd. Between 1993 and 1995, he was a product manager of Dragoco Asia Pacific Pte Ltd (now known as Symrise Asia-Pacifica Pte Ltd).
Mr Yeo Seng Lye Paul obtained a Bachelor of Science in Biology from the National University of Singapore in 1991, and graduated with a Master’s degree in biotechnology from University of Kent, United Kingdom in 1992.
Dato’ Sri Lee Kok Chuan
Biography:
Dato’ Sri Lee Kok Chuan is our Non-Executive and Non-Independent Director, and he was appointed to the Board on 11 September 2019. He has over ten years of work experience in the fields of accounting, audit and corporate services with major international accounting firms, including Ernst & Whinney (Kuala Lumpur) (now known as Ernst & Young), Arthur Young (Melbourne) and Ernst & Young (Melbourne). Dato’ Sri Lee Kok Chuan later joined Berjaya Land Berhad as Senior Manager (Internal Audit) in 1994 and was responsible for its internal audit functions, before being subsequently promoted to General Manager (Internal Audit) of the Berjaya group of companies. Thereafter, he was Executive Director of Berjaya Group Berhad from 2000 to 2001 and Chief Executive Officer of Berjaya Food Berhad from 2010 to 2017.
Dato’ Sri Lee Kok Chuan currently heads the Bermaz Auto group of companies, primarily being the chairman of Bermaz Auto Philippines Inc. and the group chief executive officer and executive director of Bermaz Auto Berhad.
Dato’ Sri Lee Kok Chuan graduated with a Bachelor of Economics (Accounting) from Monash University, Australia in 1983, and was subsequently admitted as a Fellow of the Institute of Chartered Accountants in Australia.
Ms Sumei Shum
Biography:
Ms Sumei Shum is our Independent Director, and she was appointed to the Board on 26 June 2023. She is the Chairman of the Remuneration Committee and a member of the Nominating Committee. From 1993 to sometime in 1996, she was an associate in Colin Ng & Partners, a law firm in Singapore, and was promoted to a Junior Partner thereafter in 1997. She was its Head of Operations in Jakarta in 1997. From 1998 to 2005, Ms Sumei Shum was Senior Legal Counsel in the legal department of Motorola Electronics Pte. Ltd., before rising to Vice President and Regional Director from around 2006 to 2008, where she advised on legal and contractual matters of the company’s operations in South East Asia, Australia, New Zealand and the India sub-continent. She also assumed the role of supervising and managing a team of lawyers and administrative support staff in the company’s offices in Singapore and India.
Besides experiences in legal practice, Ms Sumei Shum has experience in operations of yoga, pilates and fitness studios, and has been the Manager and Partner of Space & Light Yoga LLP since April 2009.
Ms Sumei Shum graduated with a Bachelor of Laws from the National University of Singapore in 1992 and was admitted as an Advocate & Solicitor of the Supreme Court of Singapore in 1993.
Mdm Rose Tan Hoon Hoon
Biography:
Mdm Rose Tan Hoon Hoon (“Mdm Rose Tan”) is our Independent Director, and she was appointed to the Board on 1 October 2026. She is also the Chairman of the Nominating Committee and a Member of the Audit Committee of the Company. She has more than 30 years of experience in strategic communications, corporate reputation, issues and crisis management, marketing and stakeholder engagement. She has advised political office holders, boards, chief executives, government agencies and senior leadership teams on reputation, executive positioning, stakeholder engagement and communications during complex and sensitive situations. In 1992, she founded Rose Tan Agencies, which she built into a leader in sports promotions in Singapore. In 2005, the business was acquired by Octagon, part of the Interpublic Group of Companies, a global advertising and marketing services group listed on the New York Stock Exchange, to strengthen its sports marketing presence in Singapore.
In 2006, Mdm Rose Tan co-founded Integrated Marketing Solutions, where she served as co-owner across the group until 2025. She was responsible for client relationships, business development, strategic counsel and the delivery of integrated marketing and communications programmes. While continuing her involvement with the group, she assumed leadership of CROWD Pte Ltd in 2011 and developed its integrated public relations and marketing business.
As Managing Director of CROWD Pte Ltd, Mdm Rose Tan oversees its day-to-day operations and all aspects of the business, including strategic planning, client liaison, business development, project management, financial oversight and programme delivery. Her contributions to the community have been recognised with the Singapore Red Cross Distinguished Service Award in 2015 and the People’s Association 25 Year Service Award in 2024.
Mr Levin Tan Eng Kien
Biography:
Mr Levin Tan Eng Kien (“Mr Levin Tan”) is our Non-Executive and Non-Independent Director, and he was appointed to the Board on 24 March 2026. He is also a Member of the Nominating Committee and the Remuneration Committee.
Mr Levin Tan has over 18 years of work experience primarily in multinational energy companies and private equity firms in Singapore. He began his career in investment banking with Fieldstone Private Capital Group and Maybank Investment Bank before moving to private equity investments with The Rohatyn Group and its subsidiary Capital Advisors Partners Asia Pte. Ltd.(CapAsia).
From 2016 to 2023, Mr. Levin Tan served as Investment Director at CapAsia and, concurrently from 2019 to 2023, as Investment Director of TRG Management Singapore Pte. Ltd. During this period, he was responsible for originating, executing and managing private equity investments across Southeast and Central Asia. He subsequently joined Vopak Asia Pte. Ltd. as General Manager from 2023 to 2024, where he was responsible for energy infrastructure investments across Asia and the Middle East.
Mr Levin Tan currently serves as Executive Director of Berjaya Group Berhad and STM Lottery Sdn. Bhd., both since 2 April 2025 and as Executive Director of Berjaya Corporation Berhad since 27 February 2026. He also holds directorships in several other private companies within the Berjaya group, including Berjaya Infra Sdn Bhd, Berjaya AI Labs Sdn Bhd, and Tenaga Berjaya Sdn Bhd.
Mr Levin Tan graduated with a Bachelor of Science (First Class Hons) degree in Computer and Business Studies from the University of Warwick in 2005, and subsequently earned a Master of Science in Finance from Warwick Business School in 2006. He has been a Chartered Financial Analyst (CFA) Charterholder since 2011 and obtained the CFA Institute Sustainable Investing Certificate in 2022.
Dr Kwek Boon Han
Biography:
Dr Kwek Boon Han is our CMO. He joined our Group in June 2006 and is responsible for the management of doctors and provides advice on professional medical matters to our Group. Dr Kwek Boon Han is a medical doctor who specialises in radiology and has more than 20 years of clinical experience. He has completed a Cardiac and Chest fellowship in Massachusetts General Hospital, Harvard, under a government scholarship from the Human Manpower Development Programme Fellowship.
Dr Kwek Boon Han began his career as a medical officer in various Singapore hospitals from around May 1994 to October 2000, and later a registrar in Singapore Health Services Pte Ltd, one of Singapore’s healthcare clusters, from November 2000 to October 2002. After completing his fellowship in the Massachusetts General Hospital, Dr Kwek Boon Han returned to be a consultant radiologist in diagnostic imaging in Singapore General Hospital from around October 2002 to February 2005, before leaving the public sector to establish the Heart and Vascular Centre in AsiaMedic Limited which was amongst the first to offer certain scans. During this time, he was co-chair of the Joint Writing committee on “Guidelines on cardiac CT in Singapore” that was published in the April 2006 issue of the Annals of the Academy of Medicine, Singapore. In June 2006, Dr Kwek Boon Han left AsiaMedic Limited to set up, and be, a radiologist at the imaging centre of AHP, and thereafter AMI in 2018 as well, where he continues to pursue his interest in advanced medical imaging with CT and MRI.
Dr Kwek Boon Han obtained a Bachelor of Medicine and Bachelor of Surgery from the National University of Singapore in 1993 and has been a fellow of Royal College of Radiologists and the Academy of Medicine, Singapore since 2000 and 2002 respectively.
Specialty Interests:
- MRI
- Body imaging
Ms Shermin Tham Wan Yi
Biography:
Ms Shermin Tham Wan Yi (“Ms Shermin Tham”) is our CFO. She was appointed with effect from 1 October 2025 and is responsible for the consolidation of our Group’s accounts and financial results for management reporting. She also leads the finance department in strategic financial planning, forecast, cash flow management, accounting practices, and financial controls.
Ms Shermin Tham brought with her over 20 years of accounting and financial management experience when she joined our Group. She began her career in 2003 as an Accountant at Pacific Healthcare Holdings Ltd, where she later served as Senior Finance Manager from 2012 to 2015, overseeing financial reporting and compliance. She subsequently held roles in both operational and strategic finance, including Head of Finance at MHC Asia Group Pte Ltd from January 2020 to June 2024.
Prior to joining our Group, Ms Shermin Tham was Head of Shared Services, Finance at Health Management International Pte Ltd from June 2024 to April 2025, where she led the transformation of finance operations, including automation and receivables transparency. She also served as Senior Assistant Director, Finance at Alexandra Hospital (Restructured Hospital) from May 2025 to September 2025, overseeing financial planning and board-level reporting.
Ms Shermin Tham holds a Bachelor of Science (Hons) in Accounting & Finance from the University of London (SIM) and a Diploma in Chemical Process Technology from Singapore Polytechnic.
