Dr. Tzonev graduated from Military Medical Institute, Sofia in 1988, where he earned 18 years of experience. From 1994 to 2007 he worked in the 5th General Hospital in the gastroenterology department of the medical clinic. He earned a specialization in internal diseases in 1995 and specialized in gastroenterology in 1997. In 1992, he completed additional qualifications courses in abdominal echography. He completed coursework in 1993 for invasive echography under the mentorship of Professor N. Grigorov, and later under the leadership of the leading Academic Professor G. Mechov. Since 2002, he has been qualified to conduct blind and precision hepatic (liver) biopsies. He is a member of the Bulgarian Association of Gastroentrologists and the Association of Ultrasound Medicine, and The International Association of Gastroentrologists and Surgeons. He completed post-graduate qualification courses in 1995 in Athens, Greece. He was awarded a two month specialization course in endoscopy and echo-endoscopy held in Rome, Italy in the Catholic Jemeli University hospital lead by Professor Guido Kostmania. In the year 2000, he specialized in Arnhem, Rotterdam, and Amsterdam, Holland in 2000.  Dr. Tzonev completed a two month specialization course in Nice, France in 2003. He has numerous publications in the national and international scientific journals. He is fluent in English, Russian, and is semi-fluent in Italian. 

Gastroenterology