A Medical Council inquiry is hearing eight allegations against Dr Saqib Ahmed who worked as a junior registrar in oncology from July to November of 2012 after which he was placed on administrative leave.
Dr Ahmed is alleged to have put one or more patients' health at risk by failing to attend University Hospital Limerick in a timely manner in October 2012 and also that he failed to order chemotherapy treatment.
He is also alleged to have left a clinic without permission in July, failed to adequately assess a patient, and responded in a verbally aggressive manner when doctors spoke to him about his treatment.
It's claimed he marked an area for a lumbar puncture using his thumb nail, failed to request basic tests and did to respond to attempts by staff to contact him.
Dr Ahmed, who qualified in Pakistan, is not legally represented at the inquiry – however he is participating by telephone from Michigan in the US.
He denies the allegations and has made a number of counter accusations claiming he was subject to racism, bullying and verbal abuse. Dr Ahmed also says he was a victim of dictatorship and slavery at the hospital.