I have list with doctors sorted by country, when user choose ''germany'' they will see doctors from germany, i change url e.g. ''domain.com/list?=germany'' but i not change title for ''germany'' is same like front page or doctors from italy, this is fine or i need have special for each choose because google will read this like thin/spam ?

I have list with doctors sorted by country. When a user chooses "Germany" they will see doctors from Germany. When that happens, I change URL e.g. 'example.com/list?=germany' but I do not change <title> of the page. The title for "Germany" is same as the whole list or as it is for doctors from Italy.

Is this fine or do I need have special <title> for each choice? Will Google think that using the same title indicates thin content or spam?