We just did a dirty experiment, and it seems like you can do it.
We were able to use an RFID reader to read an NFC tag.
Keep in mind that this is some kind of "dirty" experiment, performed "as is" in a few minutes to see if this is possible.
We used an RFID reader capable of reading the ISO 14443-A standard , the reader is configured to read Mifare Ultralight.
Used NFC tag NFC NTAG203 Type 2 , with 137 bytes of usable memory.
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ICTransfer.exe ISO 14443-A\ Mifare-Ultralight.

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-, NFC, : http://rapidnfc.com/which_nfc_chip