Dr Juno is a paediatrician at the hospital. When Dr Juno was very small, she had an illness that meant she had to go to hospital a lot. The nurses and doctors were so kind to her she wanted to do the same thing when she grew up.
There are roughly one-sh*t billion tropes so PLEASE look through them before adding one. Otherwise add what you like. ADDITION: PLEASE read through the trope description provided before submitting something. It's not a huge deal but too often people submit characters that don't fit just because they misinterpreted the title...