How many American soldiers were wounded multiple times?

My grandfather was wounded three times during World War 1. He often remarked about how unusual this was and how every man in his regiment knew him as "the guy with three wound stripes." In his autobiography he states that he once saw a Sergeant White, who was the only American entitled to wear five wound stripes, and that he once saw a man with four wound stripes, and that there were perhaps a handful (or maybe he said half a dozen) with three. I don't know if he meant that's how many there were or that's how many he saw.

Are there any records regarding how many Americans were wounded multiple times?