William Daniels
Mark Craig (137 eps)
Ed Begley Jr.
Victor Ehrlich (137 eps)
Howie Mandel
Wayne Fiscus (137 eps)
David Morse
Jack Morrison (137 eps)
Christina Pickles
Helen Rosenthal (137 eps)
Denzel Washington
Philip Chandler (137 eps)
Norman Lloyd
Daniel Auschlander (115 eps)
Eric Laneuville
Luther Hawkins (115 eps)
Ed Flanders
Donald Westphall (115 eps)
Stephen Furst
Elliot Axelrod (95 eps)
Mark Harmon
Robert Caldwell (70 eps)
Terence Knox
Peter White (68 eps)
Cynthia Sikes
Annie Cavanero (68 eps)
Ellen Bry
Shirley Daniels (46 eps)
Bonnie Bartlett
Ellen Craig (45 eps)
Bruce Greenwood
Seth Griffin (45 eps)
Cindy Pickett
Carol Novino (45 eps)
Kavi Raz
Vijay Kochar (44 eps)
Sagan Lewis
Jacqueline Wade (31 eps)
Jennifer Savidge
Lucy Papandrao (27 eps)
Nancy Stafford
Joan Halloran (23 eps)
G.W. Bailey
Hugh Beale (22 eps)
Ronny Cox
John Gideon (22 eps)
Kim Miyori
Wendy Armstrong (22 eps)
France Nuyen
Paulette Kiem (22 eps)
David Birney
Ben Samuels (22 eps)
Florence Halop
Mrs. Hufnagel (16 eps)
Jeannie Elias
Marcy Eisenberg (7 eps)
Richard Marcus
Ralph Selover (7 eps)
Patricia Wettig
Joanne (5 eps)
Deborah White
Nina Morrison (5 eps)
Melinda Culea
McPhail (4 eps)
Jamie Rose
Dr. Birch (4 eps)
John Schuck
Andrew Wegener (4 eps)
Ann Hearn
Andrea Fordham (4 eps)
Laraine Newman
Jane Zontell (3 eps)
Alan Arkin
Jerry Singleton (3 eps)
Lycia Naff
Maddy (3 eps)
Tim Robbins
Andrew Reinhardt (3 eps)
Jack Bannon
Stephen MacAllister (3 eps)
Tim Van Patten
Dean (3 eps)
Robert Costanzo
Mr. Broadwater (3 eps)
Rafael Campos
Ramon (3 eps)
Piper Laurie
Fran Singleton (3 eps)
Dee Hoty
Dr. Patricia Meldrum (2 eps)
Paul Linke
Dr. Herb Benzig (2 eps)
Christopher Guest
H.J. Cummings (2 eps)
Harold Gould
Melvin Millstein (2 eps)
Karen Austin
Dr. Mary Woodley (2 eps)
Stephen Shortridge
ER Patient (2 eps)
Lance Guest
Orderly Rooney (2 eps)
Dick O'Neill
Mr. O'Connor (2 eps)
Jonathan Goldsmith
Dr. Julius Markes (2 eps)
Bruce Wright
Paramedic (2 eps)
Bill Macy
Hershel Millstein (2 eps)
Frances Lee McCain
Mrs. Reinhardt (1 eps)
David Packer
Willie Andrews (1 eps)
Helen Page Camp
Mrs. Deangelis (1 eps)
Molly Cheek
Leslie Stevenson (1 eps)
Ed Lauter
Stan Morgen (1 eps)
Norman Burton
Monsignor Senti (1 eps)
Wil Wheaton
Owen Drimmer (1 eps)
Barbara Tarbuck
Agnes Najinsky (1 eps)
Anne Haney
Mrs. Clifford (1 eps)
Rosalind Chao
Mary Wilson (1 eps)
Nan Martin
Mrs. Stevenson (1 eps)
Linda Carlson
Janet Dalton (1 eps)
Bette Ford
Pat Kroll (1 eps)
Rosemary DeCamp
Amy Jeffries (1 eps)
Peter Maloney
Dr. Burgess (1 eps)
Macon McCalman
Henry Judson (1 eps)
Adam Rich
Louis Appleton (1 eps)
Jeremy Licht
Robbie Durant (1 eps)
Lois Foraker
Masha (1 eps)
John Dennis Johnston
Nick Moats (1 eps)
Millie Slavin
Maggie (1 eps)
Valerie Wildman
Woman in Bar (1 eps)
Bruce Gray
Col. Harvey Blackwell (1 eps)
John Mahon
Police Officer (1 eps)
Henry Beckman
Mr. Benville (1 eps)
Frances Bay
Mrs. Renninger (1 eps)
Leo Gordon
Bjorn Johnston (1 eps)
Bob Harks
Restaurant Patron (uncredited) (1 eps)
Joan Hotchkis
Dr. Mary Carlisle (1 eps)
Penny Santon
Frannie Catalano (1 eps)
Charles Bouvier
Appliance Repairman (1 eps)
David Knell
Matthew Brody (1 eps)
Martin Garner
William Bonwit (1 eps)
Allyn Ann McLerie
Roxanne Reed (1 eps)
Jean Allison
Marie Benzinger (1 eps)
Michael Sharrett
Donald Westphall (1 eps)
Tom Atkins
Bob Lonnicker (1 eps)
Anita Gillette
Maureen Westphall (1 eps)
Earl Boen
Walter Lankau (1 eps)
Ellen Gerken
OR technician (1 eps)
Janis Paige
Dee Mackaluso (1 eps)
Arthur Taxier
Dr. Morton Chegley (1 eps)