Dr. Alhajji graduated from Dow medical school, Karachi University in 2001. Then he started practicing medicine in his home town, Hasa Saudi Arabia, King Fahad Hospital from 2002 - 2009.In 2010, Dr. Alhajji started his further training in Internal Medicine in Franklin Square Medical Center at the University of Maryland in Baltimore. In 2013, he accepted a position at St. Bernards Medical Center, where he worked as an inpatient adult hopsitalist. In 2017, Dr. Alhajji did a fellowship in Nephrology at University of Minnesota. He specializes in renal disease and hypertension.