He specializes in cardiac surgery. Dr. Siegenthaler operates a clinical practice out of the Cardiothoracic and Vascular Clinic at Suburban Hospital in Bethesda, Maryland.Dr. Siegenthaler completed his fellowship in vascular and endovascular surgery at Albert-Ludwigs Universitaet Freiburg in Freiburg im Breisgau, Germany. He also completed residencies in surgery at University of Connecticut Health Center in Farmington, Connecticut, and thoracic surgery at Texas Heart Institute at St Luke’s Episcopal Hospital in Houston, Texas. He received his medical degree from University of Bern in Bern, Switzerland. Dr. Siegenthaler is board certified in surgery and thoracic surgery. He is fluent in English, Latin, Italian, Spanish, French and German.Dr. Siegenthaler was recognized as one of the area’s “Top Doctors” in cardiac surgery by Washingtonian magazine.