With a search of The Big List, I don't see a Neil Peart. The only Pearts I see are Greg Peart from Sacramento, CA, and a Margaret Peart from Tasmania Australia.
Perhaps Neil Peart is a pseudonym. Perhaps uses a pseudonym for his certs, though I can't imagine why anyone would. Perhaps he is a member, but only recently joined and the big list hasn't been updated with his ride yet. That can take a few months. Perhaps I misspelled "Peart" and didn't realize it. Nobody can be sure, but there is something we can be sure of. If he's been an IBA member for more than a year, his ride would be listed in the big ride list. Once you are a member, you're a member for life. Actually, you're a member even longer than that because nobody is going to purge the record if you die.