This is a hostile website (feminist) and so there is a disclaimer on the article, but there's no indication they've changed the text of the article. I tried to confirm this as WashingtonPost.Com but couldn't find an archive pre-2006 (I'd actually appreciate it very much if someone knew how to find old 2004 Washington Post articles for confirmation).
I've also seen this referenced in Roman Catholic news releases like the Article above, and a related story on Lew Rockwell (though not regarding this particular clinic). I'll see if I can get confirmation through one of those sources.
Thank you.