Hey Chris,
 Before you start giving access to member numbers it might be to your benefit to research the reason they are no longer published in the membership directory. I remember this issue was brought up some time ago in a board meeting, and it was decided not to publish them. I understand that you would need this info to determine who is a member in good standing, but once this is determined, the need becomes a non-issue, as validity has been established. It has been several years ago that this decision was made, so, I can't recall what the specifics of the debate were. Perhaps you may wish to consult with Larry Widner or Paul Rode, they might be able to better recall the specifics of the debate.
Take Care!!!
Andy