This is Erica Gimpel's final appearance as Adele Newman with social services. She first appeared in season 3 and appeared in 19 episodes total.
Bruce Weitz, playing the Alderman, played Agent Bocks on The X-Files, in Irresistible (1995). The Alderman said of Dr. Romano "Tragic about his arm. Lots of people downtown wish it had been his head." Six years earlier, Paul McCrane also guest starred on The X-Files, in Leonard Betts (1997) as Leonard Betts, a paramedic who was decapitated and grew back his head.