Kal Penn is no stranger to wearing scrubs.

He played a doctor on TV — Dr. Lawrence Kutner , a physician at the fictional Princeton-Plainsboro Teaching Hospital in “ House .”

He even temporarily scrubbed in as the stoner Kumar Patel in his breakout film, the New Jersey-set “ Harold & Kumar Go to White Castle ” (2004).

Penn, a Montclair native who grew up in Freehold Township and Wayne , was seen wearing blue scrubs in Westfield Wednesday while filming another movie.

The actor is one of the stars of the upcoming film “ What the F*ck is My Password?! ”

Penn, 48, filmed with fellow star Alexander Ludwig (“The Hunger Games,” “Bad Boys: Ride or Die”) at a dentist’s office on Euclid Avenue.

The pair stopped to pose together and flash peace signs at a photographer who visi

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