Royal Pains

Hank and Evan's father. He is discussed extensively in season one. During Hank's adolescence and Evan's childhood, he walked out on the family when their mother was dying. Evan has been able to reconcile himself with his father's legacy, but Hank has pointedly not. At the end of season one, Evan lends a large amount of HankMed's capital to Eddie, which almost bankrupts HankMed and leads to a rift between Hank and Evan. He makes his first on-screen appearance in the season two opener, when he returns Hank and Evan's money, to which Hank responds by punching him in the face. By the next episode, he has returned all of the money and has begun a relationship with "New Parts" Newberg. Though Hank asks Eddie to leave the Hamptons (as he is causing him too much trouble), he decides to stay.

Source: wikipedia.org