No cet verification is not compulsory. Once you have given NEET exam..it's a separate entrance exam which you need to clear in order to get into medical colleges.Once the results are out and you are proceeding for counselling, you have to report for the document verification process.Here no cet verification is required .

At the verification centre candidates have to bring their original documents and their photocopies. 

• 10th equivalent marksheet 
• 10+2 equivalent marksheet 
• Printout of the application form
• Fee payment proof
• NEET rank card
• Caste certificate  (if applicable )
• Domicile certificate
• Passport size photographs 

NEET doesn't require verification of any other entrance exam.

Thank you