There are 10 deemed medical university in Tamil Nadu. There are:

• Sri Ramachandra Medical College & Research Institute, Chennai (Sri Ramachandra University Deemed, Chennai)
• Saveetha Medical College and Hospital, Kanchipuram (Saveetha University Deemed, Chennai)
• Sree Balaji Medical College and Hospital, Chennai (Bharath University Deemed, Chennai)
• SRM Medical College & Research Centre Chennai ( SRM University Chennai )
• Chettinad Hospital & Research Institute, Kanchipuram (Chettinad Academy of Research and Education Deemed University, Chettinad)
• ACS Medical College and Hospital, Chennai (Dr. MGR Educational and Research Institute Deemed University, Chennai)
• Shri Satya Sai Medical College and Research Institute, Kancheepuram (Sri Balaji Vidyapeeth Deemed University, Pondicherry)
• Vinayaka Missions Kirupananda Variyar Medical College, Salem (Vinayaka Missions University Deemed, Salem)
• Meenakshi Medical College Hospital And Research Institute, Kanchipuram, Tamil Nadu

To know more about NEET visit the link below:

https://medicine.careers360.com/exams/neet

I hope this answer helps. All the very best for your future endeavors!