Medicine is not just a science to be learnt once; it is an unending process of learning. Having a scientific temper entails the interest in continuing medical education, which is the only way to be up to date to knowledge of your own practice. Medical professionals need constant thinking, trying new ideas and approaches and checking their validity, Willingness to keep learning daily.
The medical curriculum in
Most readers of medical journals don't read original articles. They may scan the abstract, but it is the rarest of beasts who reads an article from beginning to end, critically appraising it as he or she goes. Indeed, most doctors are incapable of critically appraising an article. They have never been trained to do so.
On the other hand a doctor may be in a primary care setting with minimal infrastructure, leave alone facilities for hard core research, but if he thinks and acts with a scientific temper, he does qualify to be a scientist.