There are many siddha colleges in Tamilnadu offering the BSMS courses and the list of these colleges is given below.

• Govt. Siddha Medical College, Tirunelveli, Palayamkottai
  
• Govt. Siddha Medical College, Arignar Anna Govt.Hospital of Indian Medicine Campus, Arumbakkam, Chennai
  
• National Institute of Siddha, Tambaram, Chennai
• Sri Sai Ram Siddha Medical College & Research Centre, Sai Leo Nagar, Poonthandalam, Tambaram West, Chennai
  
• Akila Thiruvithamcore Siddha Vaidya Samgam, Siddha Maruthuva Kalloory & Hospital, Anandashramam, Munchirai, Pudukkadai, P.O. Distt. Kanyakumari
• Velumailu SMC & H, No.48, GWT Road, Sriperumbudur- Distt. Kanchipuram
  
• RVS Siddha Medical College, SULUR, Coimbatore
  
• Sivaraj Siddha Medical College, Thumbathulipatty, SiddharKoil Main Road, Salem

These are the colleges offering the BSMS course and the cutoff marks for the course will depend upon the number of students registering for the course and then the merit list will be prepared and you will get the admission based on the merit rank.