She was able to work in the UK after reportedly providing bosses with a bachelor of surgery and a bachelor of medicine certificates from the University of Auckland.
The tertiary institution confirmed at the time of her arrest that records showed she did start a medical degree, but did not complete it.
She did, however, have a degree in human biology.
Under a Freedom of Information request, the BBC was told that checks were carried out before appointing Alemi.
However, her contract was immediately terminated when concerns were raised.
A spokesman for the Norfolk and Suffolk Trust said the General Medical Council had carried out all necessary checks at the time.
However, the medical council has come out apologising for its "inadequate" checking systems in the 1990s.
As a result of Alemi's actions, her former patients have all been contacted and told to seek medical attention if they had concerns. The medical council's checks are also more robust now.
A spokesman for the Norfolk and Suffolk Trust said: "As an added measure, if we receive a CV from an agency which refers to qualifications or first registration in the 1990s, we will flag this up with the [medical council] to double check."