You haven't mentioned your Category. Neverthless, there are 3 Categories in Private Medical Colleges. Category A is the Government Quota Seats. And only candidates of the home State are eligible to apply for these seats. For this Category, if  you belong to General Category, then you will need 575 atleast and 500 if you belong to Reserved Categories.  B Category seats are also called Management Quota Seats and they are filled through State Counselling and the remaining seats are filled through direct Admissions by contacting the College directly. Here the fees is usually nothing less than 40 lakhs. If you belong to General Category, you will atleast need 525 and for Reserved Categories, you will need 475 atleast. The last Category is NRI seats Category and you cannot apply for that. 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. There are only 2 Private Medical Colleges in Delhi and they are Hamdard Medical College and ACMS. Now Hamdard is a Deemed University and it is a Minority Medical College. The admission to Hamdard is through All India Counselling. ACMS comes under IPU and the admissions are conducted at IPU admission process. To help you with your NEET preparation, we have NEET Knockout packages that you can check at: https://learn.careers360.com/knockout-neet-may/.