An NRI doctor Mahesh Goel is among two leading surgeons who have found guilty of serious professional misconduct and suspended for 12 months by the General Medical Council in London.
The Council Friday said the two surgeons were found guilty of removing a patient's only healthy kidney.
Mahesh Goel, 41, a medical registrar who is currently in India, cut out the wrong kidney during an operation on John Reeves, 69, who died five weeks later, GMC said.
The procedure had been overseen by John Roberts, 61, a consultant urologist, who placed X-rays the wrong way round before the operation.
Reeves, a Korean war veteran was left with no renal function after his left kidney was removed in January 2000. His remaining kidney was not functioning.
The surgeons realised their mistake two hours after the operation at Prince Philip Hospital in Llanelli.
Neither had checked patient notes, records or the consent form, the GMC noted.