what is the cuttoff in NEET 2019 for esi medical colleges for an INSURED IP person

You haven't mentioned your Category. Nevertheless, admission to ESIC Colleges happens through All India Quota, State Quota and IP Quota.

Through All India Quota, 15% of the total available seats will be filled up based on the reservation policy and procedures of the Central Government.

Based on the location the ESI Medical College is located in, the seats will be filled through State Government Quota as per the policy of the State. Admission to these seats is based on the reservation policy of the State.

The remaining seats after allocation of All India Quota and State Quota are treated as Insured Persons Quota comprising of seats pooled together on All India basis from various ESIC Colleges. These seats are filled by the wards of Insured Persons on All India Basis. These seats are filled on the basis of merit cum preference basis.

In 2019, an All India Rank of 24514 was the closing rank mop up round for SC candidate. This converts to 404 marks. Now this is 2019 data and cut offs change every year. Cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, top NEET score and difficulty of the exam. For a Candidate belonging to General Category, atleast 500-525 and for Reserved Categories, 450-475 will be an ideal score.