Traditional medicine that focuses primarily on the treatment of illnesses with medication, rather than illness prevention and wellness, is sometimes referred to as the model.

The given blank can be filled with medical model.

Explanation:

A model of health that suggests that disease is determined and identified via a systematic process of observation, differentiation, and description, in accordance with basic accepted approaches like medical tests, examinations, or an array of symptom descriptions is known as a medical model.  

It is a traditional or conventional method, which focuses mainly on the treatment of illness with medicines, rather than prevention of illness and wellness.