Reese Witherspoon’s father, John Draper Witherspoon, was rushed to the hospital Friday, Page Six can confirm. A source tells us that the 84-year-old was found face down on the concrete by the pool at his condo in Nashville, Tennessee. According to our insider, a fellow resident spotted John from their balcony and called downstairs to alert the doorman, who eventually found the actress’ dad near the pool. “The doorman and building manager rolled him over and they said, ‘Dr. Witherspoon, are you OK?'” the source noted. “He blinked his eyes, and that’s when he was rushed to the hospital.” Nashville Metro confirmed to Page Six that a medical…