I'm glad it's helpful. ^-^ If he's getting good rep among the general public, one of (or all of) your other main characters might also come to suspect he's not all he appears to be and that could intrigue them enough to seek out your vampire to see if he's willing to help their side instead of the other way around. If that works with your plot, that would actually make it a stronger one because then both sides would actively be seeking something from the other.

ysabetwordsmith makes a good point, though. If they're in the same area, they'll be competing for similar resources. Even if they can easily keep to themselves (NY is BIG, after all), they'll have heard rumours and stories of other supernatural acts, possibly even groups, in the city. All things you can use to your advantage in drawing your characters together, though!