[1][2] Lam was trained as an aviation medicine specialist and served the Republic of Singapore Air Force (RSAF) as a medical officer and flight surgeon between 1995 and 2003.

[1] After his electoral defeat in the 2020 general election, Lam joined Eagle Eye Centre as chief executive officer and Director of the Paediatric Ophthalmology and Adult Strabismus Service, and Senior Advisor of Lumens Auto on 1 September and 27 October 2020 respectively.

[8] Lam made his political debut in the 2006 general election as part of a five-member PAP team contesting in Ang Mo Kio GRC led by Prime Minister Lee Hsien Loong and won 66.1% of the vote.

[13] In February 2018, it was revealed that Lam had sent an appeal letter directly to State Courts to help his resident, Tang Ling Lee, who was sentenced to one week jail for seriously injuring a motorcyclist in a road traffic accident.

The High Court Judge, Justice See Kee Oon dismissed the appeal, stating that Lam's letter had misrepresented the facts and trivialised the injuries sustained by the rider.

This incident led to a furor online with many netizens questioning why Lam, a legislative as well as an executive member of the government, was overstepping his duty by interfering with the judiciary.