Dr. Roberto von Sohsten M.D. is a cardiologist serving patients in Palm Beach County, FL. He is accepting new patients at his Boynton Beach office. ... PATIENT PORTAL. MORE. Roberto von Sohsten, M.D. Cardiology. Cardiology (561) 770-7030. 6080 W. Boynton Beach Blvd, #260 Boynton Beach, FL 33437. Directions (Boynton Beach) ....