Fan Mail Address

in Off Topic
Online, the "fan mail" address for Billy Joel is 34 Audrey Ave #5, Oyster Bay, NY 11771 (some place named Maritime Music Inc.). A couple years back I sent a first pressing of Piano Man in my naïveté, hoping I'd get a signed copy back. Now, I am pretty sure that address is bullshit, but is there anyone else who did the same thing and actually got a reply? And whoever manages Billy Joel's site and social medias, if you could give me some confirmation one way or another that would be awesome.
Comments
HUGE FAN many yrs.!! Thank You! ✌