Hey.
The cut off for admission in government colleges in Bihar under the State quota for the OBC category in the previous year 2018 was a rank of 15016 and a score of 519 marks.
The cut off changes each year due to several factors like level of difficulty or level of Competition etc. This year as the paper was easier the cut off based on marks will be higher than before.
Considering your rank, and the previous year last rank you seem to have lesser chances of Admission here.
You can use the link below for previous year trends.
Chances for a government college under All India quota seem less too.
https://medicine.careers360.com/articles/neet-cutoff-bihar/amp
Best of luck.

National Eligibility cum Entrance Test

Eligibility | Application | Result | Cutoff | College Predictor | Counselling | Answer Key | Accepting Colleges

Get Updates Brochure