Aim Excellent organization of the internal processes is essential for a well-functioning health care system. Particularly, the process of treatment and interaction with the patients is important because the perception of treatment and interaction has a direct relation to the patients’ satisfaction. The latter has a strong influence on the recovery of the patients. The impact of the maturity level of the treatment and interaction process on patient orientation is investigated at the example of an extensive survey of hospital managers (...) in Ukraine. -/- Method The analysis is based on an empirical data collection conducted with hospital managers and their deputies in a large Ukrainian city, which is acknowledged as a ‘model city’ with regard to a comprehensive health care reform in the country. By means of the Business Process Maturity Model (BPMM) we have tested our hypothesis that a high level of process maturity leads to a high level of patient orientation. For this purpose, we have developed a scale for measuring the level of process maturity and have checked the method on validity and reliability. A total of 79 hospital managers and deputies, who represent all public health care facilities of the city (hospitals, primary care clinics, etc.), participated in the study. -/- Results The study reveals a clear relationship between the level of maturity of the treatment and interaction process and the level of patient orientation of the respective health care facility. The variance, which is explained by the independent variable process maturity level, is 16.3 %. All formative dimensions have a strong significant influence on the construct “patient orientation”. Likewise the maturity level of the treatment and interaction process shows a strong significant influence on patient orientation. -/- Conclusion For health care facilities it is of great importance to achieve a high maturity level of the treatment and interaction process to live up to the claim of being patient oriented. The maturity of the process can be tested using the questionnaire developed in the course of our study. (shrink)