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Related Party Balances and Transactions (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Related Party Balances and Transactions [Abstract]
Due from shareholders	$ 354,285	$ 2,240,872

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- Definition

Due from shareholders.

+ References

No definition available.

+ Details

Name:	nivf_DueFromShareholders
Namespace Prefix:	nivf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTaxExpenseAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration