Dr. Raj Kumar Sharma is a highly respected nephrologist and the Director of Nephrology at Medanta Hospital, Lucknow. With over four decades of experience, he is an expert in kidney diseases and transplantation. A former head of nephrology at SGPGIMS, Lucknow, Dr. Sharma has contributed extensively to research, policy, and medical education, and is recognized for his leadership in advancing nephrological care in India.