Dr Chew adalah Ahli Bedah Telinga, Hidung, dan Tenggorokan (THT) / Kepala & Leher. Dia adalah konsultan tamu dari Departemen Otolaringologi di Rumah Sakit Umum Changi (CGH), Rumah Sakit Khoo Teck Puat (KTPH) dan Rumah Sakit Alexandra (AH).

Ia juga merupakan Anggota Internasional dari American Academy of Otolaryngology, Head and Neck Surgery. Sebelum melakukan praktik pribadi, ia adalah Kepala dan Konsultan Senior Departemen Otolaringologi di Singapore General Hospital (SGH) dan dosen paruh waktu baik di fakultas Kedokteran Gigi dan Kedokteran di National University of Singapore (NUS).

Appointment Dr Chew antara lain:

• Medical Advisory Board member (Mount Elizabeth Hospital)
• Committee Member for Head and Neck Cancer (National Cancer Centre Singapore)
• Panel Member for ENT Surgery (National Panel of Medical Experts Subordinate Courts Mediation Service)
• Committee Member, Advisory Committee on Otolaryngology (Ministry of Health, Singapore)
• Founder Member, Singapore “New Voice Club” for Laryngectomees (Singapore Cancer Society)
• President, Singapore Society of Otorhinolaryngology
• Member of Expert Panel, ENT Surgery (Health Sciences Authority)
• Member, Otolaryngology / ENT Surgery Training Committee (MOH & Duke-NUS Graduate Medical School)

Dr Chew lulus dari University of Singapore (1976) dan telah menjadi anggota Royal College of Surgeons (Edinburgh) (1981), Royal College of Surgeons (Glasgow) (1981) dan Academy of Medicine, Singapura (1985) . Ia memperoleh beasiswa dalam operasi Telinga, Hidung & Tenggorokan (THT) dan dilatih dalam operasi Kanker Kepala dan Leher di City Hospital & Royal Infirmary di Edinburgh, Skotlandia (1981) dan di Stanford University Medical Center, USA (1987).