Elisa Schwartz

Doctor Schwartz is a doctor who treated Laurel the night she died.

Season 4
Laurel was brought into the hospital in her Black Canary uniform, but Doctor Schwartz used doctor-patient confidentially to keep her workers from publically disclosing her identity to the public. This would be a pointless effort as Oliver would do it later on because an imposter was tarnishing her name.

Season 5
Doctor Schwartz treated Oliver after he was attacked by Vigilante. She also figured out Oliver was the Green Arrow based on their encounter a year ago. He advised her to keep reach out to a friend to help his mind heal from his stressful life.