Dr. Jerry Malone (47 episodes, 1958-1963)
Dr. David Malone (46 episodes, 1958-1963)
Tracey Malone / Tracy Malone (43 episodes, 1962-1963)
Dr. Stefan Koda (41 episodes, 1962-1963)
Jill Malone (5 episodes, 1958-1959)
Dr. Paul Brown (5 episodes, 1958-1959)
Fran Merrill (5 episodes, 1958-1959)
Tracey Malone (5 episodes, 1958-1959)
Faye Bannister Koda (2 episodes, 1962-1963)
Claire Bannister Steele (2 episodes, 1962-1963)
Erica Brandt (2 episodes, 1962-1963)
Dr. Stefan Koda (1959) (2 episodes, 1962-1963)
Ted Powell (1 episode, 1963)
Lionel Steele (1 episode, 1963)
Eve Dunbar Cusack (1 episode, 1963)
Harold Cranston (1 episode, 1963)
Dr. Matt Steele (1 episode, 1962)
Emory Bannister (1959-1963) (1 episode, 1962)
Jill Malone (1 episode, 1963)
Deirdre Bannister (1 episode, 1963)
Jill Malone #2 (1959-1962) (unknown episodes)
Faye Bannister #1 (1959-1961) (unknown episodes)
Gail Prentiss (1959-1960) (unknown episodes)
Clara Kershaw (1959-1960) (unknown episodes)
Dr. Eileen Seaton (1959-1960) (unknown episodes)
Jody Baker (1959-1960) (unknown episodes)
Ernest Cooper #2 (1959) (unknown episodes)
Peter Brooks (1959) (unknown episodes)
Dr. Matt Steele #1 (1959) (unknown episodes)
Ernest Cooper #1 (1959) (unknown episodes)
Lisha Steele #1 (1959) (unknown episodes)
Dr. Matt Steele #2 (1959) (unknown episodes)
Lisha Steele #3 (1960-1961) (unknown episodes)
Pete Ferris (1960) (unknown episodes)
Lisha Steele #2 (1960) (unknown episodes)
Gig Houseman Malone (1961-1962) (unknown episodes)
Larry Renfrew (1961-1962) (unknown episodes)
Miss Long (1961) (unknown episodes)
Lillian Houseman (1961) (unknown episodes)
Lt. Flagler (1962-1963) (unknown episodes)
Fred McNeill (1962-1963) (unknown episodes)
Natalie (1962-1963) (unknown episodes)
Lisha Steele #4 (1962) (unknown episodes)
Rick Hampton (1962) (unknown episodes)
Miss Fisher (1962) (unknown episodes)
Marge Wagner (1963) (unknown episodes)
(unknown episodes)
Dr. Dudley (unknown episodes)
Mr. Driscoll (unknown episodes)
State's attorney (unknown episodes)
Clarence Williams (unknown episodes)
Role unknown (unknown episodes)
Sandra Peterson #1 (unknown episodes)
Clerk (unknown episodes)
Sandra Peterson #2 (unknown episodes)