The doctor is in. Zach Braff wouldn’t have it any other way. Growing up in South Orange, New Jersey, the “Scrubs” star dreamed of wearing a white coat. “Becoming a doctor was definitely on my radar,” the 51-year-old says. “When I was in high school, they had a Volunteer Rescue Squad in my town for kids to work with the local ambulance service EMTs. “I did that and was so fascinated by it that I thought, ‘Wow, maybe. Maybe I could get into medical school,’” Braff says, though he acknowledges: “I wasn’t the best student. I wasn’t good at biology and chemistry.” So, he did the next best thing: play a doctor on TV. Now, he says real doctors come up and say, “You really inspire me.” After the first run lasted nine seasons from 2001 to 2010, “Scrubs” is enjoying new life, back on Wednesdays on ABC and streaming the next day on Hulu. The revamped medical sitcom had 11 million viewers during its premiere week and was just renewed for a second season.…