Dr Lam is an infectious disease physician in private practice and has an interest in immunisation and vaccine preventable diseases. Dr Lam is a founding partner of the Infectious Disease Specialists Group.

She was Head, Travellers’ Health & Vaccination Clinic at Tan Tock Seng Hospital before she left for private practice in 2000. She looks after inpatients at Mt Alvernia Hospital, Mt Elizabeth Orchard, Mt Elizabeth Novena Hospital and Farrer Park Hospital and sees outpatients at the group’s clinics, namely Infection & Vaccination Consultants at Mt Elizabeth Orchard, Infection & Vaccination Centre at Mt Elizabeth Novena Specialist Centre and Infectious Disease Clinic Pte Ltd at Farrer Park Medical Centre