Yes, but his having been born in that hospital is much less clear. Not that it matters, McCain will not run again...
OTOH, it might matter since he was the only candidate to get electoral votes for President, other than the Messiah.
That's why it still matters.
As to the point about whether he was born in that hospital or not issue: There is a detailed coverage of the issue at the beginning of the Long Thread which I thought resolved the issue.
In August (08), there was some dissent on the point you raise. After the convention, I was in DC and ran into a lawyer who was working on the McCain campaign and we had the Natural Born Citizen debate. He said the posted birth certificate was correct--McCain born in Colon; but that it didn't make any difference because both his parents were citizens.
There has been some subsequent consideration of McCain. The statute on which he relies for citizenship was adopted several years after he was born and was not retroactive. Further, I am of the opinion, if anyone is interested, that McCain would in fact have had a Common Law argument that he was a citizen at birth because of the two parent rule but that such citizenship was not "natural born citizenship" because of the interruption of the foreign sovereignty.