Hi aspirant,

With 423 marks you have chance to get bams seat in government medical college of Nagpur if you belong to ews catagory. According to previous years cutoff 400 + marks to good for ews catagory candidate to take a government seat. You can get seat.

This information is based on previous years cutoff and the cutoff marks change every year. It's depends upon number of students that appeared in examination, number of seats available in colleges, difficulties of question paper, reservation catagory, previous years cutoff trends, etc.
You can use neet college predictor to know which college you may get with your marks. That is mentioned below:-
https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer
Hope this helpful. Best of luck.