Dr Khanna graduated from Panjab University Medical School in India in1985. He did post graduation in Internal Medicine and postgraduate training in Neurology before moving to USA in 1992.
Dr Khanna completed his Internal Medicine Residency in 1994 in Maryland. He moved to North Dakota with St. Luke’s Hospital in 1995 for three years.
Dr. Khanna's interests apart from the general issues of adult internal medicine are in the long-term management of chronic health problems such as Diabetes, High Blood Pressure, Heart disease & Heart Failure, and Chronic Lung disease.
He is Former Chairman, Dept. of Medicine, at Reston Hospital.