Dr. Alfonso is a psychiatrist.
Season Ten[]
Tess Mercer hired Dr. Alfonso to evaluate Alexander. After a few sessions, Dr. Alfonso wanted to take Alexander to a facility, where he could keep a closer eye on him. Tess agreed to let him. However, by the time that Dr. Alfonso arrived at the Luthor Mansion, Tess had changed her mind (starting to have maternal feelings for the boy), and kept Alexander with her.