Allen Ho-Yin Ngai, specialist in family medicine, is an associate consultant in the Department of Family Medicine and Primary Health Care, Kowloon West Cluster, Hospital Authority, and honorary clinical assistant professor in family medicine, Department of Community and Family Medicine, The Chinese University of Hong Kong.
The honorary secretary of the Hong Kong Institute of Musculoskeletal Medicine, he is concurrently doctor-in-charge of the South Kwai Chung Jockey Club General Outpatient Clinic and the Ha Kwai Chung Family Medicine Specialist Clinic (Musculoskeletal Medicine).

Dr Ngai earned his MBBS degree from the University of Hong Kong in 1998, then went on to train in family medicine at the Caritas Medical Centre and Yan Chai Hospital. He underwent specialized training in musculoskeletal medicine at the University of Otago, Christchurch, New Zealand, receiving a postgraduate diploma in musculoskeletal medicine in 2006.

Dr Ngai is a fellow of the Royal Australian College of General Practitioners, the Hong Kong College of Family Physicians and the Hong Kong Academy of Medicine.