Donald Trump is a big fan of doctor's notes. After all, "it's how he got out of Vietnam!" pointed out "Late Show" host Stephen Colbert.

Last December, Trump released a one-page letter from his physician, which sounded a lot like something Trump himself would write. The letter appeared questionable for a number of reasons, including the fact that it began with the words, "To Whom My Concern."

"Is that a typo?" Colbert asked. "My-be, My-be not."

But Trump's doctor is real and gave an exclusive interview on NBC News this past Friday.

"The doctor in question is gastroenterologist and Trump's strategic hair reserve, Dr. Harold Bornstein," said Colbert, adding, "He looks like a guy who can not only write you a prescription for drugs, but tell you what they taste like."

"Bornstein proved he's a gastroenterologist because the letter seemed like he yanked it from where the sun don't shine," Colbert continued.

"For example, his assertion that 'Mr. Trump has had a complete medical examination that showed only positive results,' and positive results are always good. Blood pressure? Positive! Cholesterol? Positive! Chlamydia? Positive!"

In addition to describing Trump's health as "extraordinary," Bornstein also stated in the letter that if Trump becomes president, he will be the "healthiest individual ever elected"... despite the GOP nominee's "prescription of KFC and taco bowls," joked Colbert.

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