In the respective Varna what position they would be? Kindly tell me.
One can not decide like that. One can not say that since you are such and such by occupation you belong to such and such varna.
What the scriptures will tell us is simply what the recommended occupations are for a person belonging to a particular varna.
For example, for the Vaishya varna the following are the recommended jobs:
- To invest money on interest, to be a jeweller, to tend cattle, tillage and trade, — these are declared as occupations for the Vaisya caste,
ParAsara Smriti 1-63
But, that does not mean one can also say that all persons in trading business are Vaishya by varna.
Similarly with doctors. Just like a Vaishya can be a doctor, even a Brahmin can be one too. But its a different thing that then he will be considered as degraded.
The four [classes of] Vipras, who sell sheep, who are painters, who are physicians, and who read the positions of stars, should never be adored, even if they are equal to Vrihaspati in learning. (378)
Atri Smriti's Chapter 1.
This above verse clearly shows that people belonging to different occupations can belong to one particular varna (Brahmin here). So, ascertaining varna from occupation is not possible.