Hey there, ever wondered, "How old was Neil Patrick Harris in Doogie Howser?" I mean, the kid was a doctor, but how old was the actor, really?

Let's rewind to 1989, the year Doogie Howser, M.D. premiered. Neil Patrick Harris, our favorite teenage doc, was just a fresh-faced 16-year-old. Can you even? I mean, he was younger than some of the props on that show!

Now, you might be thinking, "But wait, Doogie was supposed to be a 16-year-old genius doctor. That's not too far off!" Well, yes, you're right. But stick with me, folks, 'cause it gets a tad more interesting.

Growing Up on Screen

So, Neil Patrick Harris started playing Doogie at 16. The show ran for four seasons, wrapping up in 1993. That's four whole years of growing up on screen. By the time the final episode aired, NPH was a whopping 21 years old. Talk about an awkward graduation!

5 Best Neil Patrick Harris Roles5 Best Neil Patrick Harris Roles

I mean, imagine this: one day you're playing a high school kid, the next, you're a college graduate. That's gotta be some serious real-life growing pains, right?

Age Isn't Just a Number

Now, you might be wondering, "How did they pull off Doogie being a doctor at 16?" Well, it's all about that Hollywood magic, my friends. They'd use clever camera angles, quick cuts, and, let's be real, some pretty convincing lab coats.

Want to feel old? Doogie Howser -- OK, Neil Patrick Harris -- turns 39Want to feel old? Doogie Howser -- OK, Neil Patrick Harris -- turns 39

But here's the thing, even with all the tricks, Neil Patrick Harris was still just a kid playing a kid. And that, my friends, is the beauty of Doogie Howser. It's a show that reminds us that sometimes, age is just a number, and what really matters is the story we're telling.

So, there you have it. Neil Patrick Harris was 16 when Doogie Howser started, and 21 when it ended. Pretty neat, huh? Now, who's ready for a rewatch?