Dr. Jonsson graduated from University of Iceland Faculty of Medicine in 1979 and has been in practice for 38 years. He completed a residency at Washington Hospital. He currently practices at Inova Fairfax Hospital and is affiliated with Inova Fairfax Hospital. Dr. Jonsson accepts multiple insurance plans including Aetna, Medicare and Humana. Dr. Jonsson also practices at Pediatric Hematology & Oncology of Northern Virginia in Falls Church, VA. In addition to English, Dr. Jonsson's practice supports these languages: Polish, Russian, Vietnamese, Spanish, Arabic, Korean, German, Italian and French.