Hi Subha, These are some of the self financing medical colleges in tamil nadu and all these colleges admit via NEET only

IRT Perundurai Medical College , Perundurai.  

P.S.G. Institute of Medical Sciences & Research, Coimbatore.

Sree Mookambika Institute of Medical Sciences,Padanilam,  Kanyakumari District.

Adhiparasakthi Medical College, Melmaruvathur.

Karpaga Vinayaga Institute of Medical Science, Chinna Kolambakkam, Kanchipuram District.

Tagore Medical College , Vandalur.

Sri Muthukumaran Medical College, Chennai

Chennai Medical College  Hospital & Research Centre, Irungalur, Trichy.

Dhanalakshmi Srinivasan Medical College, Perambalur

Annapoorna Medical College, Salem

Madha Medical College, Chennai

Karpagam Medical College, Coimbatore

Hope this helps, Good luck