Dr. Miura is a pediatrician and Lily's doctor. Cameron and Mitchell met her when they took Lily to the doctor after Mitchell bumps her head in "Run for Your Wife". Cameron embarrasses the pair by making constant comments on her Asian origin, despite her constant reminders of her being from Denver.
Later, in "Fears", Cameron invites her over for brunch to make connections in the event of a tamiflu shortage. However, while she is holding Lily, Lily appears to call her Mommy. Over brunch, the three talk about it. Mitch and Cam decide that it was because the orphanage Lily was from was run by Asian women, while Dr. Miura insists Lily was just making noises. However, as they come to these conclusions, Lily says Mommy again.
Dr. Miura goes to leave, and as she does, talks to the two parents about how her mother just wanted her to be an Asian stereotype, and how her father supported her dreams of becoming a doctor. She tells Mitchell and Cameron that with two fathers like them, Lily is the luckiest girl in the world. However, pulling out the driveway, she hits their trashcan, yelling "I didn't see that!"
After she leaves, Mitchell and Cameron find out that Lily that got the word Mommy from her talking doll.