Ibrahim Nurudeen was arrested Wednesday afternoon after he attempted administering medication to a patient on admission in one of the wards at the facility.
The security officer called Affum Adjei in an interview with Adom News said though the suspect was dressed as a doctor with his stethoscope he was acting strangely.
So Affum said he decided to ask Ibrahim basic questions about the medical profession and he was found fumbling in his response.
It was when the security man threatened to alert the police when the suspect admitted that he had been parading as a doctor at the hospital because he was deeply interested in the job.
Also, the Public Relations Officer at the Korle Bu Teaching Hospital Mustapha Salifu was not surprised the fake doctor was napped.
He indicated that the security arrangement at Korle Bu is very tight thus no charlatan can operate there.
Mustapha Salifu commended the security personnel for being proactive in apprehending the suspect.
Meanwhile, Superintendent Daniel Dzakah at the Korle Police Station said the suspect is in their custody pending investigations.