Asst. Prof. of Medicine, Osmania Medical College, Hyderabad (1985-1987) Asst. Prof. of Nephrology, Osmania Medical College, Hyderabad (1990-1994) Registrar in Nephrology, St. James University Hospital, Leeds, UK (1994-1995)Prof. of Nephrology, Guntur Medical College, Guntur (1995-1996) Consultant Nephrology, Apollo Hospitals, Hyderabad (1996 till date)