Hello,Samiran
The most advisable preference order of AIIMS shall be:

• AIIMS,Delhi
  
• AIIMS,Bhopal
  
• AIIMS,Bhubaneshwar
  
• AIIMS,Rishikesh
  
• AIIMS,Jodhpur
  
• AIIMS,Raipur
  
• AIIMS,Nagpur
  
• AIIMS,Patna
  
• AIIMS,Guntur
  

Hope this helps.

Best of Luck!!!

Hi, 

There are all together 9 AIIMS campuses in India. Six AIIMS institutions were established in 2012 in cities of Bhopal, Jodhpur, Patna, Rishikesh, Bhubaneswar and Raipur. According to the academic ranking they are as followed: (Best to Moderate)

• AIIMS, New Delhi.
• AIIMS, Bhopal.
• AIIMS, Bhubaneshwar.
• AIIMS, Jodhpur.
• AIIMS, Patna.
• AIIMS, Raipur.
• AIIMS, Rishikesh.
• To secure admission, student must clear AIIMS UG examination conducted in May or June every year. AIIMS Bhopal is most sought after campus after AIIMS Delhi due to it's outstanding hospital infrastructure and various research opportunities provided to students, faculty members. 
• Hope this helps.
• Good luck! 
•