Actually, significantly more than other ranged characters; as long as clerics have ranged 5 powers and a burst-5 healing word, it will be a lot easier for monsters to engage them than the longbow-Ranger hiding 20 squares away behind a tree.
Thanks everyone. Final clarification, Astral Symbol gives +2 to range so makes Lance of Faith into range 7. Not ideal but as the primary healer I'm basically a two-trick pony: heal/debuffs and dpr lasering when nobody is dying.