According to the previous year cutoff of Bihar for National eligibility entrance test there are various colleges in which you can get admission on the basis of 612 marks. I am mentioning below the name of some medical colleges which you may get with this score. These are the NEET MBBS Bihar state wise cutoffs:

1. Anurag Narayan Magadh Medical College and Hospital
2. Government Medical College bettiah
3. Indira Gandhi Institute of Medical Sciences Patna
4. Darbhanga Medical College
5. Jawaharlal Nehru Medical College Bhagalpur
6. Nalanda Medical College Patna
7. Shri Krishna Medical College and Hospital Patna

You you can also use our college predictor link for knowing your chances for more colleges in Bihar:

https://medicine.careers360.com/neet-college-predictor?utm_source=qna&utm_medium=neet_cp