Hello Aspirant,
No there is no requirement of any special permission from MCI or any other authority because for now the NIOS students are also provisionally eligible for MBBS admission through NEET UG, so if you have passed 12th from NIOS then also you can directly register for NEET UG.
Also you should satisfy the following eligibility criterion for NEET UG :-
** You must have passed 10+2 from any recognized central/state board.
** English should also be in your curriculum of class 12th and also you should have passed in it.
** You minimum age should be more that or equal to 17 years by December 31st 2022, as per the current eligibility criteria.
** As of now there is no upper age limit for NEET but the case is pending in Hon'ble SC and by 2022 if the verdict comes then the upper age limit may be decided and it can be either 25 or as decided by SC.
For complete details about NEET Eligibility criteria kindly check out the link given below :-
https://medicine.careers360.com/articles/neet-eligibility-criteria
If you are preparing for NEET then to help you in your preparation we have some resources which you can access from the link given below :-
https://learn.careers360.com/knockout-neet-may
I hope this information helps you.
Good Luck!!
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