Lewis Bardach is the father of Melinda Bardach in the Season 2 episode Safe. He is married to Barbara Bardach. He was portrayed by actor Lance Guest.
Lewis is very protective and when Gregory House locked himself and Foreman into the elevator with Melinda to find the tick House felt was there, Lewis nearly assaulted House when he found House examining Melinda's vagina until House showed him that's where the tick had been hiding.