Hello Satyajit,

No you cannot become a doctor by doing a paramedical course.

There is no alternative to becoming a doctor except MBBS. 

Paramedic is just a very basic form of MBBS where you only get a little introduction of the MBBS course and you learn the do's and don'ts.

You will always have to work under the supervision of a doctor if you become a paramedic and you cannot independently treat a patient.

So if you want to be a doctor then you need to complete MBBS.

Hope this helps.