A doctor's clinical performance was "deficient" and he failed to take advice or show improvement, a Medical Council inquiry has heard.
Colleagues at another hospital were so concerned that Dr Omar Hassan posed a threat to patient safety that he was placed on leave just two months into his post.
Dr Hassan faces 11 allegations of poor professional performance and professional misconduct relating to his work at the Midlands Regional Hospital Portlaoise, Mayo General Hospital and University Hospital Galway.
Dr Hassan, with an address in Dublin, denies the allegations.
Dr Amir Siddiqui told the inquiry today that there were "deficiencies" in Dr Hassan's clinical performance, and that "collectively, my feeling was that he was not a team player".
Dr Siddiqui was working as a consultant and was the clinical lead in the surgery department at the Midlands Regional Hospital Portlaoise during the time that Dr Hassan worked there in 2012.
Asked his opinion of Dr Hassan's clinical performance, Dr Siddiqui said: "Overall, it was deficient."
He said the deficiencies that Dr Hassan seemingly displayed are skills one would expect an intern to know, let alone an SHO.
Dr Siddiqui said there were numerous opportunities for Dr Hassan to take advice, but that he never took advice, nor showed improvement.
Dr Siddiqui said that on one day in October 2012, he went to the emergency department to look for Dr Hassan, as nursing staff had told him they had been attempting to contact Dr Hassan unsuccessfully.
Dr Siddiqui said he found Dr Hassan in a break room near the department. He said he told Dr Hassan that he could finish his break and then resume work.
Dr Hassan told Dr Siddiqui today that he found it very intimidating to his personal space that Dr Siddiqui came to him in the small break room to tell him to return to work.
He said he has never had another consultant do that with him, and that he found it "a bit intimidating and invasive".
The Medical Manpower Officer at University Hospital Galway also gave evidence regarding Dr Hassan's time at the hospital where he was employed as an orthopaedic SHO in 2014.
James Keane said a number of problems materialised early on with Dr Hassan, both with nursing and medical staff.
He said the consultants working with Dr Hassan, concerned about his abilities, put safeguards in place early on so that he was not placed on call, and was placed under close supervision.
Dr Hassan began his six-month contract at UHG in January 2014 but was placed on administrative leave by February 2014, due to concerns from colleagues over patient safety, according to Mr Keane.
The inquiry heard that Dr Hassan disputes many of the concerns raised by his former colleagues at UHG.
Dr Hassan argued that, during his first week at UHG, he successfully managed many patients and thought he got on well.
Dr Hassan worked at Midlands Regional Hospital, Portlaoise from July 2012 until January 2013, and at Mayo General Hospital in December 2013. He then worked as an orthopedic SHO at University Hospital Galway in January and February 2014.
