Dr Metcalfe, who worked as a GP registrar at the Bron Meirion practice after qualifying from the University of Manchester in 2019, has been suspended from medical work after a series of deceptions.
A medical tribunal panel heard he went to the Tesco pharmacy in Bangor on January 2, 2022, and presented a prescription to staff, which he claimed was from an A&E department.
He then contradicted himself by describing the prescriber as an "old friend".
Dr Metcalfe told the pharmacist his friend had written the prescription to help him because GP surgeries were closed over Christmas.
Later the same day, Dr Metcalfe phoned the pharmacy and spoke to an employee.
This time using his true identity, he told the dispenser he had written the prescription for a friend.
He claimed he had tried to help his friend because it was "hard to get hold of a doctor during the holiday period".
Dr Metcalfe lied that the "friend" who had turned up at the pharmacy was simply trying to protect him by pretending not to know him. B...