http://www.upinnumbers.org UPIN Numbers - What are they? Do I need an UPIN Number? Where to lookup UPIN Numbers Tue, 14 Oct 2008 17:36:23 +0000 http://backend.userland.com/rss092 en http://www.upinnumbers.org/medicare-upin-numbers-definition http://www.upinnumbers.org/hello-world