Name Tammy
Actor Tammy Dahlstrom
First Appearance Big Baby

Tammy was Johnny's mother in the Season 5 episode Big Baby. She was portrayed by actress Tammy Dahlstrom.

Tammy and Johnny were visiting Sarah while she was in the hospital. She described how Sarah was able to build up the ability to communicate with Johnny, who is autistic. Johnny started to withdraw after Sarah left, so his mother took him for a visit to get him to open up again.