Hall began her career as a house surgeon at
Wellington Hospital, followed by two years as a registrar at Cook Hospital in
Gisborne. gaining her
MRCP diploma in 1932. She was the second New Zealand woman to obtain the MRCP. As surgeon and physician they were described as "the backbone of the Cook Hospital medical service". The Halls moved to
Paihia in 1958 when Richard retired but Theodora continued to work as a physician at the
Bay of Islands Hospital. She held that role until 1971. == Personal life ==