Rachel Kaplan is the mother of Olive Kaplan, a young clinic patient in Babies & Bathwater. Her husband is Joel Kaplan. She was portrayed by actress Natalie Shaw. Rachel and Joel brought Olive to the clinic as she seemed very sick. Gregory House diagnosed Olive with pneumonia and malnutrition which he blamed on the fact that Olive had been put on a vegetarian diet. Olive and Joel promised to feed the baby a more varied diet and Dr. House was satisfied.