Is this story in the Gospels traditionally considered a parable or an actual glimpse into the afterlife? I guess the shortest way to answer this would be: is the poor man Lazarus venerated as a saint in the Orthodox Church? I know that he was in the medieval Latin church but what about in the East?
It's definitely read as just a parable by the Fathers, although it obviously includes a view of the intermediate state. The Fathers generally read it as a parable about the Jews and the gentiles (which makes perfect sense in context). Lazarus is not considered to be a historical person by anyone I know of.