Doctor of Medical Studies, surgeon, owner and director of “KRIOMED CZAJKOWSKI” in Piaseczno at ul. Kilińskiego 14. He graduated from the Warsaw Medical Academy in 1974; he obtained a second-degree specialisation in general surgery in 1983 and a second-degree specialisation in thoracic surgery in 1990.
Medical internship: National Tuberculosis Sanatorium, St. Thomas hospital in London, Regional Health Centre in Kwidzyn, City Hospital in Iława, National Institute of Tuberculosis and Lung Diseases in Warsaw; cardiac surgery internship in South Africa.
1974 – medical internship in Messina – Sicily, Italy,
1976 – St. Thomas Hospital – Londyn,
1990 – Bar-Ilan University – Tel-Aviv,
2001 – a series of lectures at the international Cryosurgery Congress in Lisbon,
2002 - a series of lectures and surgeries in Mexico City,
2006 – a doctoral thesis: “Cryotherapy of venous ulcers”,,
2010 – surgeries and lectures in Athens – Greece,
2012 – a series of lectures in Minsk – Belarus
2014 – ectures and surgeries in Almaty – Kazakhstan
Author of 32 scientific papers published in Polish and international medical journals; member of the Polish Medical Association, the Association of Polish Surgeons and the Polish Phlebological Society. His last position in a public medical facility has been the Director of Cardiac Surgery Clinic of the National Institute of Tuberculosis and Lung Diseases.