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"Heal Thyself"
Season 15, Episode 7 (#316)
Air date November 13, 2008
US viewers 9.80 M
Written by David Zabel
Directed by David Zabel
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Heal Thyself is the seventh episode of the fifteenth season of the NBC medical drama series ER. It premiered on November 13, 2008. It has Anthony Edwards returning as Mark Greene in the flashback role as Catherine Banfield's past is revealed.


While out for a mind-clearing run, Banfield encounters a desperate situation and finds herself trying to rescue a very young girl from drowning in a nearby lake. Painful memories of her son in mortal danger and Dr. Greene 's heroic attempts to save him are triggered during the experience. Meanwhile, Gates attempts to pull some strings to help out a homeless war veteran, and the interns continue to struggle in the ER.

Cast and Characters


Parminder Nagra as Dr. Neela Rasgotra

John Stamos as Dr. Tony Gates

Linda Cardellini as Nurse Sam Taggart

Scott Grimes as Dr. Archie Morris

David Lyons as Dr. Simon Brenner

Angela Bassett as Dr. Cate Banfield

Anthony Edwards as Dr. Mark Greene (Final Appearance)


Leland Orser as Dr. Lucien Dubenko

Troy Evans as Frank Martin

Julian Morris as Dr. Andrew Wade

Courtney B. Vance as Russell Banfield

Yvette Freeman as Nurse Haleh Adams

Abraham Benrubi as Jerry Markovic

Emily Rose as Dr. Tracy Martin

Emily Wagner as Pickman

Louie Liberti as Paramedic Bardelli

Nasim Pedrad as Suri


Laura Innes as Dr. Kerry Weaver

Paul McCrane as Dr. Robert Romano

Monique Gabriela Curnen as Nurse Blanca Alvarado



  • Eriq La Salle appears to speak out about the death of Michael Crichton after the old ER title card is shown. After he introduces himself, He says to the audience, "This past week we lost the creator of our show, Michael Crichton He was a true gentleman, gracious and witty, a brilliant writer, intelligent and unfailingly kind. Most of all, Michael was a good friend. We'll miss him."
  • Not only do former ER cast members reprise their roles in this episode, but the old opening title-card is also used after having been abandoned at the beginning of Season 13. However, the opening sequence used after the title card appears is the current one.
  • Anthony Edwards reprises his role of Dr. Mark Greene more than six years after his last appearance on the series, in the Season 8 episode "On The Beach ." He is listed first in the main cast credits, rather than being credited as making a special appearance, or as a special or regular guest star.
  • Although listed in the opening credits, David Lyons does not appear in this episode.
  • Laura Innes (Dr. Kerry Weaver ), Paul McCrane (Dr. Robert Romano ) and Abraham Benrubi (Jerry ) reprise their previous roles in this episode. Each is credited as making a "Special Appearance."
  • The title of this episode is a reference to a proverb found in Luke 4:23. It appeared on the screen just before the title: "Physician, heal thyself: whatsoever we have heard done in Capernaum, do also here in thy country."


  1. Seidman, Robert (November 14, 2008). "UPDATED Thursday: CSI Most Viewers, Grey's Anatomy Higher Demos; Plus ER ". TV by the Numbers. (May 24, 2015).