This article is from the ER FAQ, by Rose Cooper cooper@acm.cse.msu.edu with numerous contributions by others.
(Note: I define a "recurring" character as someone
who's appeared in more than one episode in
*unrelated* storylines, or has their own storyline.
Patients who appear over the course of several episodes
as part of the same medical storyline aren't listed here.)
Dr. Maggie Doyle, played by Jorja[n] Fox
ER Resident, third-year
Dr. Donald Anspaugh, played by John Aylward
Hospital Chief of Staff
Dr. Neal Bernstein, played by David Spielberg
Head of Pediatrics
Al Boulet, played by Wolfgang Bodison (first season)
and Michael Beach (after first season)
Jeanie's ex-husband [currently doyled somewhere in Atlanta,
waiting for his storyline to start again]
Mary Cain, played by Fran Bennett
Head of hospital re-engineering committee
Dr. Janet Coburn, played by Amy Aquino
OB/GYN attending
Drummond, played by Paul Collins
Hospital labor rep
Officer Al Grabarsky, played by Mike Genovese
Local policeman, married to Lydia
Jennifer Greene, played by Christine Harnos
Mark's ex-wife, a lawyer currently clerking
Rachel Greene, played by Yvonne Zima
Mark's daughter
Helen Hathaway, played by *Giorgi Tarian (first season)
and Rose Gregorio (after first season)
Carol's mother
Jackie, played by Khandi Alexander
Peter's sister
Carla Reese, played by Lisa Nicole Carson
Peter's ex-girlfriend, and now mother of his child
Reese [Reece]~ Benton, played by Matthew Watkins
Peter Benton and Carla Reese's son
[name of original actor playing Baby Boy Benton, unknown]
Craig Simon, played by Bruce Nozick
Jenn Greene's husband
[off playing "What's My Line" with Al]
Kathy Snyder, played by Meghan Gallagher
Legal counsel for the hospital
Dr. Tabash, played by Ted Rooney
Surgical obstetrics specialist
Dr. Jack Kaysen, played by Sam Anderson
Cardiologist
E. Ray Bozeman, played by Charles Noland
Ex-nursing assistant, now administrations desk
Dr. Robert "Rocket" Romano, played by Paul McCrane
Surgical Attending
[and pelvis-girdle-hole-driller extraordinare]
Chase Carter, played by Jonathan Scarfe
John Carter's addicted cousin
Millicent "Gamma" Carter, played by Frances Sternhagen
John Carter's grandmother, and Carol's clinic-benefactor
Allison Beaumont, played by Michele Morgan
EMT/Paramedic, and ongoing patient of Dr. Corday's
Dr. Dale Edson, played by Matthew Glave
Surgical Resident, third-year (season 5)
[...and all-around pipsqueak]
*Roxanne Please, played by Julie Bowen
Carter's Season 5 [ObBlonde] girlfriend
*Dr. Amanda Lee, played by Mare Winningham
Chief of Emergency Services, Season 5
[aka "One of the baddest ER bitches out there"]
 
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