Going by previous All India cut offs and your rank, you may have chances in Private Medical Colleges like:

Silchar Medical College: Pathology

Assam Medical College: Forensic Medicine; Pharmacology

Guwahati Medical College: Post Graduate Diploma in Clinical Pathology

Tezpur Medical College: Community Medicine

Johrat Medical College: Physiology

Now this is 2019 data and cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, difficulty of the exam, and no.of seats available for each specialisation. Please try our College predictor to check the possibility of other specialisations with you rank across India:  https://medicine.careers360.com/neet-pg-all-india-college-predictor