Siegfried Szarfstein Ramler qualified as a doctor in at the University of Palermo (Italy) in July 1934 and was added to the Hong Kong list of authorised medical practitioners in September 1939. He worked in Kowloon's Nathan Road at first, but by the time of the Japanese attack had moved to the Exchange Building in Des Voeux Road.
Probably as a German or Austrian citizen (perhaps a Jewish refugee) he was not interned during the occupation. He was arrested by the Japanese on May 16, 1944 for reasons not currently known and held at Central Police Station for 27 days, providing medical attention to both prisoners and Gendarmes. He gave evidence to a War Crimes about the use of torture at the Station.
He stayed in Hong Kong after the war and became a popular and successful practitioner, and in 1947 he invited Solomon Bard, whom he'd known before the war, to return to Hong Kong to become his partner.
Hong Kong Government Gazette, September 15, 1939
Solomon Bard, Light and Shade, 2009, 134, 136
China Mail, July 10, 1947, page 2
Note: It's possible his name should be written Siegfried Szarfstein-Ramler