Hi Madhav,

As per the official notification total number of seats available through NEET PG examination 2020 in India are as follows:-

MD - 19,953

MS - 10,821

PG Diploma - 1979

DNB CET - 1338

The total colleges are 6102 MS/MD/PG Diploma and 649 hospitals (DNB)

The institutes which are not covered by NEET PG are:-

AIIMS, New Delhi and other AIIMS
PGIMER, Chandigarh
JIPMER, Puducherry
NIMHANS, Bengaluru
Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum

You may refer to the source article for more detailed information.

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I hope this information helps you.

Good Luck!