You haven't mentioned your Category. We do not have 20199 data yet. Neverthless,you can check the cut offs of GMCs of Tamilnadu for 2018 at our page: https://medicine.careers360.com/articles/neet-cutoff-tamil-nadu . Now this is 2018 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. So for a seat under General Category, you will need more than 550 and for Reserved Categories, you will need more than 475. To help you with your NEET preparation, we have NEET Knockout packages that you can check at: https://learn.careers360.com/knockout-neet-may/. To help you during admission and counselling, we have https://www.careers360.com/mbbs-companion.