| Name | Character | Episodes |
|---|---|---|
| Richard Chamberlain | Dr. Kildare | 191 |
| Jack Nicholson | Jaime Angel | 191 |
| Eddie Ryder | Dr. Simon Agurski | 191 |
| Raymond Massey | Dr. Leonard Barry Gillespie | 191 |
| Ken Berry | Dr. John Kapish | 191 |
| Margaret Leighton | Chris Becker | 191 |
| Jud Taylor | Dr. Thomas Gerson | 191 |
| Jean Inness | Nurse Beatrice Fain | 191 |
| Clegg Hoyt | Mac | 7 |
| Donna Loren | Anna Perrona | 7 |
| James T. Callahan | Dr. Yates Atkinson | 6 |
| Dean Stockwell | Dr. Rudy Devereux | 6 |
| Jack Hawkins | Justin Post | 6 |
| Diane Baker | Amy Post | 6 |
| Tony Bill | Thomas Hartwood | 6 |
| David Opatoshu | Fred Kirsh | 6 |
| William Shatner | Dr. Carl Noyes | 5 |
| Diana Muldaur | Jeannie Orloff | 5 |
| Joanna Pettet | Yvonne Barlow | 5 |
| Jeff Donnell | Evelyn Driscoll | 5 |
| Robert Reed | Judd Morrison | 5 |
| Andrew Prine | Dr. Roger Helvick | 5 |
| Lesley Ann Warren | Bonda Jo Weaver | 4 |
| Burt Brinckerhoff | Charles Shannon | 4 |
| Darren McGavin | Prof. Felix Holman | 4 |
| Ricardo Montalban | Damon West | 4 |
| Cloris Leachman | Rhoda Kirsh | 4 |
| Elizabeth Allen | Katherine West | 4 |
| Marlyn Mason | Laura Morrison | 4 |
| James Mason | Dr. Maxwell Becker | 4 |
| Fred Astaire | Joe Quinlan | 4 |
| Audrey Totter | Ella Vitnack | 4 |
| Kathy Garver | Tracey Richards | 4 |
| Diana Sands | Irene Rush | 4 |
| Hazel Court | Norma Hobart | 4 |
| Laura Devon | Sister Benjamin | 4 |
| Tippy Walker | Lois Gibbon | 4 |
| James Earl Jones | Dr. Lou Rush | 3 |
| Martin Balsam | Dr. Milton Orloff | 3 |
| Angie Dickinson | Carol Tredman | 3 |
| Karl Swenson | Judge | 3 |
| Lee Meriwether | Nurse Bonnie Tynes | 3 |
| Richard Beymer | Rev. Jack Elder | 3 |
| Bradford Dillman | Andrew Webb | 3 |
| Bradford Dillman | Rev. Andrew Webb | 3 |
| Mercedes McCambridge | Sister Teresa | 3 |
| Eduardo Ciannelli | Pappas | 3 |
| Paul Stewart | Dr. Giuseppe Muretelli | 3 |
| Anne Seymour | Mrs. Canford | 3 |
| Donald Harron | Dr. Ian MacDuff | 3 |
| James Frawley | Luther Bernstein | 3 |
| Harry Morgan | Francis X. Healy | 3 |
| Edward Binns | Peter De Gravio | 3 |
| Naomi Stevens | Mrs. Gast | 3 |
| Philip Bourneuf | Dr. Wickens | 3 |
| Ramon Novarro | Gasparo Paolini | 3 |
| Daniela Bianchi | Francesca Paolini | 3 |
| Alida Valli | Luisa Brabante | 3 |
| Joyce Bulifant | Judy Cannon | 3 |
| Hayden Rorke | Bishop | 3 |
| Edmon Ryan | Mr. Hallerton | 3 |
| Martin Balsam | Dr. Carl Noyes | 2 |
| George Kennedy | Joe Cramer | 2 |
| George Kennedy | Sergeant Hensley | 2 |
| James Daly | Morgan Bannion | 2 |
| Susan Oliver | Dr. Jessie Martel | 2 |
| Clu Gulager | Dr. Norman Gage | 2 |
| Murray Hamilton | Dr. Haldore Mattern | 2 |
| Murray Hamilton | Lt. Dan Hargrave | 2 |
| Rip Torn | Dr. Nicholas Keefe | 2 |
| Kim Hunter | Emily Field | 2 |
| Sorrell Booke | MacAllister Thane | 2 |
| Basil Rathbone | Frederick Foray | 2 |
| Yvette Mimieux | Pat Holmes | 2 |
| Bill Walker | Tad | 2 |
| Barbara Rush | Madge Bannion | 2 |
| John Newland | Paul Montgomery | 2 |
| Sam Waterston | Mark | 2 |
| Jeanette Nolan | Fanny Devalon | 2 |
| Madge Blake | Nurse Helen Phipps | 2 |
| Whit Bissell | Dr. Kenneth Kline | 2 |
| Sharon Farrell | Rachel Field | 2 |
| Lew Gallo | Dr. Ned Rand | 2 |
| Susan Silo | Angie | 2 |
| James Flavin | John Dolan | 2 |
| Leonard Stone | Fred Payson | 2 |
| Kym Karath | Margaret Hanson | 2 |
| Audrey Totter | Norma Littell | 2 |
| Joe De Santis | Bruno Rossi | 2 |
| Anjanette Comer | Carol Montgomery | 2 |
| Hayden Rorke | Dr. Norman Hackett | 2 |
| Joan Marshall | Charlene Ross | 2 |
| Frances Reid | Emmy Foray | 2 |
| Sandy Kenyon | Dr. William Galdi | 2 |
| Tim Rooney | Wylie Hamilton | 2 |
| Rupert Crosse | George Parker | 2 |
| Lawrence Montaigne | Raymond Rossi | 2 |
| Elizabeth Rogers | Miss Trilling | 2 |
| Phyllis Hill | Mrs. Holmes | 2 |
| Dan Tobin | Jonsey | 2 |
| Charles Bronson | Harry Gregg | 1 |
| Leslie Nielsen | Walter Burton | 1 |
| Leslie Nielsen | Harry Kleber | 1 |
| Peter Falk | Dr. Matt Gunderson | 1 |
| Robert Redford | Mark Hadley | 1 |
| James Caan | Charley Johnson | 1 |
| Suzanne Pleshette | Julie Lawler | 1 |
| Suzanne Pleshette | Nurse Cathy Benjamin | 1 |
| Suzanne Pleshette | Ellen Tracey Adams | 1 |
| William Shatner | Dr. Toby Cunningham | 1 |
| Walter Matthau | Franklin Gaer | 1 |
| Marianna Hill | Gina Craig | 1 |
| Martin Balsam | Ned Lacey | 1 |
| Martin Balsam | Benny Orloff | 1 |
| Edgar Buchanan | Steve Devitt | 1 |
| Edgar Buchanan | Judge Wilfred Manning | 1 |
| Elinor Donahue | Sharon Calloway | 1 |
| Ned Glass | Nate Martin | 1 |
| Andrew Duggan | Carl Quincy | 1 |
| Charles Lampkin | Eddie | 1 |
| Steven Geray | Frank Chernak | 1 |
| Joseph Schildkraut | Dr. Maxwell Keller | 1 |
| Cliff Norton | Joe Gatson | 1 |
| Walter Brooke | William Fredericks | 1 |
| Cliff Osmond | Robert Slade | 1 |
| Dorothy Provine | Sally Boles | 1 |
| Stuart Erwin | Dave Lesser | 1 |
| Susan Strasberg | Barbara Miller | 1 |
| Douglas Fairbanks Jr. | Dr. Robert Devlin | 1 |
| Scott Marlowe | Dr. Eddie Moore | 1 |
| Michael Forest | Julian Forman | 1 |
| Robert Warwick | Dr. Bromley | 1 |
| Paulene Myers | X-Ray Technician | 1 |
| Paulene Myers | Dr. Jean Sackley | 1 |
| Paulene Myers | Technician | 1 |
| Walter Pidgeon | Dr. Charles Priest | 1 |
| George Voskovec | Dr. Charles Hodiak | 1 |
| Richard Kiley | Fred Carroll | 1 |
| Hope Summers | Madge | 1 |
| Burt Brinckerhoff | Vincent Doyle | 1 |
| Ron Howard | Jerry Prentice | 1 |
| Gena Rowlands | Helen Scott | 1 |
| Ellen Burstyn | Anne Garner | 1 |
| Lee Marvin | Dr. Paul Probeck | 1 |
| Lee Marvin | Buddy Bishop | 1 |
| Harold Gould | Dr. Peter Duey | 1 |
| Harold Gould | Earl McCloskey | 1 |
| Mariette Hartley | Ellen Hendricks | 1 |
| Kevin McCarthy | Dr. Harvey Gruboldt | 1 |
| Kevin McCarthy | Dr. Omar Larson | 1 |
| Carolyn Jones | Evy Schaller | 1 |
| John Fiedler | Father Hughes | 1 |
| John Fiedler | D.V. Dromley | 1 |
| John Fiedler | Mr. Calhoun | 1 |
| Eddie Albert | Dr. Norman French | 1 |
| Jack Warden | Ernie Duffy | 1 |
| Earl Holliman | Capt. Bob Hill | 1 |
| Ralph Bellamy | Dr. L Richard Starke | 1 |
| Julie Adams | Ginny Nelson | 1 |
| Victor French | Jack | 1 |
| Robert Culp | Matt Hendricks | 1 |
| Robert Culp | Dr. Jesse Hartwood | 1 |
| Kim Darby | Patsy Carey | 1 |
| Kim Darby | Sandy Kimball | 1 |
| Pat Hingle | Lloyd Jason | 1 |
| Pat Hingle | Dr. Edward Swader | 1 |
| Beau Bridges | Bob Colby | 1 |
| Barbara Eden | Nurse Judy Gail | 1 |
| Susan Oliver | Carol Logan | 1 |
| Dennis Weaver | Wayne Wandemeir | 1 |
| Marion Ross | Nurse Ann Patterson | 1 |
| Anne Francis | Kathy Stebbins | 1 |
| Donnelly Rhodes | Chris McKenna | 1 |
| Ruth Roman | Marie Quincy | 1 |
| Ruth Roman | Lily Prentice | 1 |
| Barbara Barrie | Peggy Farrow | 1 |
| Tom Bosley | Harry Markham | 1 |
| Victor Jory | Dr. Oscar Whalen | 1 |
| Adam Williams | Ralph Walker | 1 |
| Dean Jagger | Lt. Gen. John Sparrow | 1 |
| Dan O'Herlihy | Mark Addison | 1 |
| Dan O'Herlihy | John Patrick McHenry | 1 |
| Dan O'Herlihy | Dr. Phillip Downey | 1 |
| Dan O'Herlihy | Mark Sloan | 1 |
| Virginia Gregg | Grace Temple | 1 |
| Claude Rains | Edward Fredericks | 1 |
| Forrest Tucker | Max Beemis | 1 |
| Jean Stapleton | Nurse Whitney | 1 |
| Joseph Cotten | Charles Ladovan | 1 |
| Robert Young | Dr. Gilbert Winfield | 1 |
| Patrick O'Neal | Dr. Harvey Robert Jones | 1 |
| Joan Hackett | Karen Welby | 1 |
| Bill Mumy | Jeffey | 1 |
| Lauren Bacall | Virginia Herson | 1 |
| John Williams | Dr. George Hazard | 1 |
| Ellen Corby | Ainsley Hallie | 1 |
| Glynis Johns | Sister Brigid Marie | 1 |
| Joyce Van Patten | Julie Belmanno | 1 |
| Joyce Van Patten | Ruth Scully | 1 |
| J. Pat O'Malley | Paul Menzies | 1 |
| J. Pat O'Malley | John Doe IV | 1 |
| Carroll O'Connor | Roy Drummond | 1 |
| Carroll O'Connor | David Burnside | 1 |
| Marta Kristen | Darleen Landon | 1 |
| Sal Mineo | Carlos Mendoza | 1 |
| Brian Keith | Alfred Freely | 1 |
| Beverly Garland | Julia Dressard | 1 |
| Beverly Garland | Susan Hastings | 1 |
| Diane Baker | Emma Swader | 1 |
| Jack Weston | Dr. Justin Muntag | 1 |
| Ed Nelson | Dr. Keith Judge | 1 |
| Brooke Bundy | Linda Robbins | 1 |
| Lois Nettleton | Hildy Pochek | 1 |
| Lois Nettleton | Lisa Dowling | 1 |
| Tony Dow | Bob Quincy | 1 |
| Sorrell Booke | Julius Orloff | 1 |
| James Anderson | Spencer | 1 |
| Ross Martin | Dr. Bill Mitchell | 1 |
| Ross Martin | Oscar Clayton | 1 |
| Barbara Bel Geddes | Dr. Ruth Halliman | 1 |
| Lee Meriwether | Nurse Adams | 1 |
| Lee Meriwether | Nurse Angela Springer | 1 |
| Lee Meriwether | Nurse Harper | 1 |
| John Marley | Dr. Xavier Miller MD | 1 |
| John Marley | Judge Haines | 1 |
| John Anderson | Vernon Hackett | 1 |
| Jocelyn Brando | Doris Phillips | 1 |
| Pat Crowley | Janet Parker | 1 |
| Pat Crowley | Claire Sutton | 1 |
| Harry Guardino | Gerald Hastings | 1 |
| Olympia Dukakis | Anna Nieves | 1 |
| Morgan Brittany | Harriet Kirsh | 1 |
| Anne Baxter | Nora Willis | 1 |
| Peggy Wood | Katie Harris | 1 |
| Steven Hill | Dr. Chandra Ramid | 1 |
| Bradford Dillman | Tony Warren | 1 |
| Theodore Bikel | Dr. Mahmel Homatka | 1 |
| Kathryn Hays | Gina Beemis | 1 |
| Fritz Weaver | Arthur Hobler | 1 |
| Polly Bergen | Janice Graham / Cathy Brandon | 1 |
| Paul Carr | John Doe | 1 |
| John Qualen | Mr. Callahan | 1 |
| Joanne Linville | Elizabeth Thornley | 1 |
| Ted Knight | Henryk | 1 |
| Glenda Farrell | Vera Dennis | 1 |
| Henry Silva | Ed Carson | 1 |
| William Demarest | Mr. Aimes | 1 |
| Dabney Coleman | Dr. David Kirkson | 1 |
| John Hoyt | Dr. Bernard Motley | 1 |
| Jack Carter | Ted Galahad | 1 |
| Jack Carter | Willie Guy | 1 |
| Nina Foch | Georgia Pettigrew | 1 |
| Eduardo Ciannelli | Angelo Delvecchio | 1 |
| Richard Benjamin | Dr. Adam Barstow | 1 |
| Richard Benjamin | Intern | 1 |
| Ford Rainey | Dr. Andy Meadows | 1 |
| Ford Rainey | Dr. Walter Untermeyer | 1 |
| Aki Aleong | Dr. King | 1 |
| David Lewis | Dr. Robert Coneely | 1 |
| Bert Freed | Dr. Donald White | 1 |
| Bert Freed | Director | 1 |
| Barbara Parkins | Annie Grant | 1 |
| Max Showalter | Ben Ballard | 1 |
| Max Showalter | Rulon Murphy | 1 |
| Paul Newlan | Carl Victor | 1 |
| Lloyd Bochner | Dr. Harry Nelson | 1 |
| Pippa Scott | Dr. Elizabeth Cullus | 1 |
| Rosemary DeCamp | Angela Faring | 1 |
| Betty Field | Mrs. Harper | 1 |
| Bill Bixby | Dr. John Grant | 1 |
| Bill Bixby | Dr. Ben Mollenhour | 1 |
| George Macready | Harper Faring | 1 |
| Al Ruscio | Ed Rutherford | 1 |
| Peggy Rea | Dorothy Gitner | 1 |
| Peggy Rea | Nurse Helen O'Hara | 1 |
| Peggy Rea | Nurse Carrie | 1 |
| Anna Lee | Mrs. Frances Alland | 1 |
| Lurene Tuttle | Mrs. Parker | 1 |
| Philip Abbott | Dr. David Key | 1 |
| John Larch | Dr. Victor Jonah | 1 |
| Joanna Barnes | Dr. Suzanne Shary | 1 |
| Frank Maxwell | Vincent Thompson | 1 |
| Stanley Adams | Dr. Alexander Shoates | 1 |
| Patricia Smith | Norma Jasper | 1 |
| Dick York | Harry Benton | 1 |
| Lee Philips | Dr. Arthur Colby | 1 |
| Robert Walker Jr. | Neal Tomlinson | 1 |
| Peter Hansen | Mr. Sloan | 1 |
| Beverly Adams | Student Nurse (uncredited) | 1 |
| Charles Aidman | James Grady | 1 |
| Beah Richards | Alice | 1 |
| Mary Badham | Cora Sue Henty | 1 |
| Dina Merrill | Evelyn LeFevre | 1 |
| Conlan Carter | Intern (uncredited) | 1 |
| Milton Frome | Walter Goodman | 1 |
| Conrad Nagel | Governor Matthew Evans | 1 |
| Peter Whitney | Carl Temple | 1 |
| Peter Whitney | Dr. Nat Franklin | 1 |
| Orville Sherman | Steward | 1 |
| Peter Helm | Tommy Rainey | 1 |
| Colleen Dewhurst | Eleanor Markham | 1 |
| Patricia Huston | Marie Hackett | 1 |
| Marge Redmond | Mrs. Barnett | 1 |
| Marge Redmond | Clara McCloskey | 1 |
| Connie Gilchrist | Mary Markham | 1 |
| Barry Gordon | Billy Hoffman | 1 |
| Grandon Rhodes | Dr. Evans | 1 |
| Mario Alcalde | Luis Nieves | 1 |
| David Sheiner | Fred Hunter | 1 |
| Frank Puglia | Joe Crosetti | 1 |
| Isobel Elsom | Mrs. Walker | 1 |
| Isobel Elsom | Mrs. Silver | 1 |
| Stanley Clements | Mr. Riccio | 1 |
| Sue Randall | Emily Gunderson | 1 |
| Paul Mantee | Neurosurgeon | 1 |
| Leonid Kinskey | Sam Weiss | 1 |
| Frank Aletter | Dr. Jerry Helvick | 1 |
| Raymond Bailey | Dr. Jerry Wagner | 1 |
| Jack Ging | Dr. Paul Graham | 1 |
| Tom Tryon | Dr. William Ellis | 1 |
| Peter Brocco | Druggist | 1 |
| George Savalas | Aristos | 1 |
| Miriam Colon | Rani Stewart | 1 |
| Miriam Colon | Pila | 1 |
| Collin Wilcox Paxton | Winona Pine | 1 |
| Malcolm Atterbury | Asa McConnell | 1 |
| Collin Wilcox Paxton | Lorena Henty | 1 |
| Robert Winston | Army Corporal | 1 |
| Edith Atwater | Miss Thorton | 1 |
| Denver Pyle | R. E. Lenger | 1 |
| Richard Anderson | Dr. Norman Phelps | 1 |
| John Cassavetes | Makin Saund | 1 |
| William Schallert | Inspector | 1 |
| William Schallert | Tom Scola | 1 |
| Leonard Nimoy | Harry | 1 |
| Ed Asner | Dr. Frank Williams | 1 |
| Margaret O'Brien | Nurse Lori Palmer | 1 |
| Lois Smith | Libby Clayton | 1 |
| Jeanette Nolan | Annie | 1 |
| Dick Sargent | Dr. Paul Willis | 1 |
| Andrew Prine | Dr. Louis Miller | 1 |
| Andrew Prine | John Bardeman | 1 |
| Jack Lord | Dr. Frank Michaels | 1 |
| Ed Begley | Henry Harris | 1 |
| Ed Begley | Joe Hogan | 1 |
| Ed Begley | Jamie Cousins | 1 |
| Bert Remsen | Dr. Tom Belmanno | 1 |
| Yvonne Craig | Carol Devon | 1 |
| Elizabeth MacRae | Nurse Carrie Palmer | 1 |
| Gloria Talbott | Jerry Cunningham | 1 |
| Diana Hyland | Dr. Lilith McGraw | 1 |
| Diana Hyland | Marguerite Williams | 1 |
| Roger Davis | Karl Bjorstrand | 1 |
| Peter Haskell | Paul Williams | 1 |
| Edward Binns | Ben Laney | 1 |
| Lola Albright | Gertrude Carey | 1 |
| James Shigeta | Dr. Roy Shigera | 1 |
| Alfred Ryder | Dr. Tony Stewart | 1 |
| Ivan Dixon | Dr. Arthur Staples | 1 |
| Ivan Dixon | Detective | 1 |
| Constance Ford | Reba Guy | 1 |
| Parley Baer | Dr. James Connors | 1 |
| Abraham Sofaer | Shahzi Saund | 1 |
| Steve Ihnat | Dr. James Rothson | 1 |
| Mala Powers | Julie Michaels | 1 |
| William Fawcett | Cox | 1 |
| Linda Watkins | Mrs. Keeler | 1 |
| Cesar Romero | Dr. Paul Marino | 1 |
| Lana Wood | Judy Gaer | 1 |
| Hans Conried | Oliver Blair | 1 |
| Anne Helm | Helen Keening | 1 |
| Charles McGraw | Fred Rainey | 1 |
| Charles McGraw | Dr. Kenneth Hasker | 1 |
| Joseph V. Perry | Antonio Pronesti | 1 |
| Miyoshi Umeki | Hana Shigera | 1 |
| Les Tremayne | Dr. Keith Bresson | 1 |
| Les Tremayne | Dr. Arthur Jansen | 1 |
| Naomi Stevens | Aunt Kasia | 1 |
| Naomi Stevens | Mrs. Gitlin | 1 |
| Naomi Stevens | Mrs. Mendoza | 1 |
| James Franciscus | Stan Fisher | 1 |
| Fay Spain | Sally Winters | 1 |
| Fay Spain | Emily Buchanan | 1 |
| Irene Hervey | Martha Kildare | 1 |
| Mary Astor | Martha Lantzinge | 1 |
| Mary Astor | Aunt Frances | 1 |
| Burt Mustin | Mr. Franklin | 1 |
| Burt Mustin | Dibbedee | 1 |
| Joan Freeman | Ellen Hall | 1 |
| Otto Kruger | Louis Conrad | 1 |
| Jeanne Cooper | Marian Colby | 1 |
| Dorothy Malone | Rena Ladovan | 1 |
| James Whitmore | Henry Clay Kincaid | 1 |
| Connie Sawyer | Gladys | 1 |
| Philip Bourneuf | George Prentiss | 1 |
| Estelle Winwood | Adeline Blair | 1 |
| Beatrice Straight | Pamela Rainey | 1 |
| Robert Strauss | Mike Martin | 1 |
| Michael Constantine | Dr. Ernest Miller | 1 |
| Frank Overton | John Oliver | 1 |
| Sharon Farrell | Jeanne Sawyer | 1 |
| Sharon Farrell | Glenda Hester | 1 |
| Barbara McNair | Mareema Kamba | 1 |
| Helen Kleeb | Nurse Bernard | 1 |
| Walter Burke | Hotel Clerk | 1 |
| Lew Gallo | Dr. Philip Leland | 1 |
| Henry Beckman | Sam Allen | 1 |
| Paul Langton | Dr. Ian Lamb | 1 |
| Jules Munshin | Sylvan Pappinax | 1 |
| Gina Gillespie | Little Girl | 1 |
| Ben Wright | Dr. Van Zandt | 1 |
| Ben Wright | Mr. Baker | 1 |
| Ross Elliott | Asst. District Attorney | 1 |
| Joby Baker | Jerry House | 1 |
| Edward Andrews | Arthur Penmore | 1 |
| George Grizzard | Douglas Martin | 1 |
| Richard Davalos | Gordon Hall | 1 |
| Harry Townes | Gerald Prince | 1 |
| Walter Slezak | Dr. Max Jurgens | 1 |
| Stefan Gierasch | Willie Kovar | 1 |
| Regis Toomey | Arthur Wheeler | 1 |
| Claire Trevor | Nurse Veronica Johnson | 1 |
| Louise Sorel | Eloisa Ruiz | 1 |
| Joan Blondell | Dolly Marlowe | 1 |
| Vic Perrin | Veterinarian | 1 |
| Tisha Sterling | Sheila Winfield | 1 |
| Jack Albertson | Cary Fain | 1 |
| Jon Lormer | Mr. Teale | 1 |
| Roger Mobley | Jamie Carroll | 1 |
| Roger Mobley | Alan Burnside | 1 |
| Vito Scotti | Jesus Munoz | 1 |
| Rhys Williams | Dr. Chester Wayne | 1 |
| James Griffith | Sims | 1 |
| James Griffith | Harold Hutchinson | 1 |
| Jeremy Slate | Dr. Anthony Tredman | 1 |
| Dick Wessel | Sam Dlugash | 1 |
| Stafford Repp | Eddie Boykin | 1 |
| Eileen Heckart | Nurse Jenny Freesmith | 1 |
| Michael Callan | Charles Devereaux | 1 |
| Richard Eyer | Bob Eckert | 1 |
| Alan Reed | Joe Belasco | 1 |
| Gerald S. O'Loughlin | Gus Pochek | 1 |
| Sidney Blackmer | Dr. Carleton Lantzinge | 1 |
| Sidney Blackmer | Dr. Andrew Bennett | 1 |
| Joe Mantell | Theodore Roosevelt Hopkins | 1 |
| Carol Eve Rossen | Dr. Emmy Lorfield | 1 |
| Carol Eve Rossen | Dr. Lois Bower | 1 |
| Jack Donner | Dr. John Shea | 1 |
| Jan Murray | Kenny Hallerton | 1 |
| Rusty Lane | Gus Markham | 1 |
| Garry Walberg | Dr. Benjamin Lenlow | 1 |
| Charles Macaulay | Jameson Black | 1 |
| Jean Hagen | Nurse Mary Ogilvy | 1 |
| Joe De Santis | Enrico Conti | 1 |
| Martine Bartlett | Mrs. Goodwin | 1 |
| Greg Morris | Lincoln Ball | 1 |
| Robert Sorrells | Big Green | 1 |
| Roberto Contreras | Santos Esqueda | 1 |
| Edward Platt | Dr. Tom Paulson | 1 |
| Crahan Denton | Fred Dennis | 1 |
| Jackie Joseph | Ellie | 1 |
| Chester Morris | Tom Monahan | 1 |
| Nancy Malone | Nurse Jean Dennis | 1 |
| Herschel Bernardi | Pico | 1 |
| Herschel Bernardi | Nathan Agurski | 1 |
| Fabrizio Mioni | Armando di Corragio | 1 |
| Lisa Loring | Cindy Norcross | 1 |
| Ann Harding | Mae Priest | 1 |
| Dennis Patrick | Franklin V. Powers | 1 |
| Alex Gerry | Arthur Agurski | 1 |
| Bill Quinn | Mr. O'Connor | 1 |
| Bill Quinn | Instructor | 1 |
| Corey Allen | Jerome Pine | 1 |
| Corey Allen | Dr. Harris | 1 |
| Patricia Breslin | Marion French | 1 |
| Bernard Kates | TV Director | 1 |
| Bernard Kates | Irving Forman | 1 |
| Danielle De Metz | Nurse Danielle Mercier | 1 |
| Mary Murphy | Janet Logan | 1 |
| Harry Basch | Dr. Milton Bremner | 1 |
| Joe Maross | Nicky Buchanan | 1 |
| Carl Benton Reid | Dr. George Garrison | 1 |
| Donald Randolph | Dr. John Grosseto | 1 |
| Beulah Quo | Natsu Shigera | 1 |
| Betsy Jones-Moreland | Ruth Jonah | 1 |
| Stuart Nisbet | Mr. Garst | 1 |
| Tige Andrews | Roy Winters | 1 |
| Ruth White | Hester Cullen | 1 |
| Shelley Morrison | Mrs. Martinez | 1 |
| Shelley Morrison | Mrs. Ruiz | 1 |
| Nora Marlowe | Mamie Delaney | 1 |
| Nora Marlowe | Mrs. Smith (uncredited) | 1 |
| Larry Parks | Dr. Steven Waller | 1 |
| Irene Dailey | Sara Anderson | 1 |
| Irene Tedrow | June Crowley | 1 |
| Bob Denver | Dr. Paul Garrett | 1 |
| Edmon Ryan | Bill Revere | 1 |
| Susan Bay Nimoy | Nurse Leah Bradley | 1 |
| Phyllis Love | Ruth Wandemeir | 1 |
| Arte Johnson | Bud Fowler | 1 |
| Barbara Baxley | Kitty Scola | 1 |
| Inga Swenson | Paula Waller | 1 |
| George Mathews | Dr. Willard Ryson | 1 |
| Geraldine Brooks | Laura Bailey | 1 |
| Gertrude Flynn | Eleanor Quayle | 1 |
| Gertrude Flynn | Technician | 1 |
| Jason Wingreen | Painter | 1 |
| Paul Comi | Dr. Thomas Kane | 1 |
| Robert Random | Eddy York | 1 |
| Michael McGreevey | Tommy Adams | 1 |
| Paul Burke | Lawrence Crane | 1 |
| Maidie Norman | Mrs. Johnson | 1 |
| Alexander Lockwood | Harold Lee | 1 |
| Francis X. Bushman | Mr. Cooper | 1 |
| Eddy Waller | Dr. Millard Eakins | 1 |
| Iphigenie Castiglioni | Mrs. Krolik | 1 |
| Tommy Farrell | Wally | 1 |
| Clancy Cooper | Dunleavy | 1 |
| Clancy Cooper | Janitor | 1 |
| Fay Bainter | Sister Mike | 1 |
| Moyna MacGill | Neighbor | 1 |
| Charla Doherty | Kathy Calvert | 1 |
| Pamela Duncan | Dorothy | 1 |
| Ken Mayer | Maitre d' | 1 |
| Cyril Ritchard | Justin Fitzgibbons | 1 |
| Betty Bronson | Wilma McHenry | 1 |
| Curt Conway | Judge Reynolds | 1 |
| Michael Evans | Charles LeFevre | 1 |
| Barbara Young | Saleslady | 1 |
| S. John Launer | Dr. Sadvary | 1 |
| Fred Holliday | John Tremont | 1 |
| Larry Blyden | Eddie Hiller | 1 |
| Karl Weber | Dr. E. David Golden | 1 |
| Kyle Johnson | Davey Mann | 1 |
| Anne Meacham | Rose Clayton | 1 |
| Peter Duryea | Larry | 1 |
| Phyllis Hill | Mrs. Beaton | 1 |
| William Swan | Young Doctor | 1 |
| Norman Alden | Bernie (uncredited) | 1 |
| Janice Rule | Lila Gregg | 1 |
| Janice Rule | Joan Cartwright | 1 |
| Alex Nicol | David Graham | 1 |
| Josephine Hutchinson | Amelia Blair | 1 |
| Lillian Bronson | Frances Neilson | 1 |
| Darryl Hickman | Harlan Thomas | 1 |
| Mike Kellin | Dr. Larry Phelen | 1 |
| Zohra Lampert | Rose Kemmer | 1 |
| Zohra Lampert | Myra Krolik | 1 |
| Dick Foran | Paul Adams | 1 |
| Gloria Swanson | Julia Colton | 1 |
| Ruth McDevitt | Nurse Adele Fromm | 1 |
| Anne Jeffreys | Jill Sloan | 1 |
| Audrey Dalton | Jo Grant | 1 |
| Eddie Firestone | Joe Fitch | 1 |
| Terry Carter | Ernie Mann | 1 |
| Claudine Longet | Mme. Dupres | 1 |
| Cheryl Holdridge | Nurse Nancy Reynolds | 1 |
| Mabel Albertson | Hannah Lacey | 1 |