| People Name | Number of Episodes | Dates |
|---|---|---|
| Brad Kern | 28 | 10/14/1998 - 05/21/2006 |
| Joel J. Feigenbaum | 16 | 04/27/2000 - 11/20/2005 |
| John T. Kretchmer | 14 | 10/07/1998 - 05/15/2005 |
| Curtis Kheel | 14 | 05/10/2001 - 05/15/2005 |
| Mel Damski | 14 | 01/13/1999 - 01/15/2006 |
| James L. Conway | 13 | 02/03/1999 - 05/21/2006 |
| Sheryl J. Anderson | 11 | 12/16/1998 - 04/26/2001 |
| John Paré | 10 | 02/17/2000 - 05/14/2006 |
| John Behring | 10 | 03/03/1999 - 10/12/2003 |
| Constance M. Burge | 8 | 10/07/1998 - 05/04/2000 |
| Derek Johansen | 8 | 01/12/2003 - 04/30/2006 |
| Javier Grillo-Marxuach | 7 | 10/28/1998 - 04/06/2000 |
| Jonathan West | 6 | 05/11/2003 - 05/07/2006 |
| Craig Zisk | 6 | 05/05/1999 - 11/16/2000 |
| Michael Grossman | 5 | 11/14/2004 - 04/16/2006 |
| Chris Long | 5 | 01/11/2001 - 01/05/2003 |
| Doug E. Jones | 5 | 03/28/2002 - 01/22/2006 |
| David Straiton | 5 | 01/25/2001 - 10/13/2002 |
| Stuart Gillard | 5 | 11/03/2002 - 02/26/2006 |
| Nell Scovell | 4 | 01/25/2001 - 01/31/2002 |
| Kevin Inch | 4 | 01/20/1999 - 04/06/2000 |
| Shannen Doherty | 4 | 05/18/2000 - 05/17/2001 |
| James A. Contner | 4 | 11/25/1998 - 01/11/2004 |
| Jon Paré | 4 | 05/16/2004 - 04/24/2005 |
| Jim Conway | 3 | 01/19/2003 - 04/27/2003 |
| LeVar Burton | 3 | 01/23/2005 - 04/23/2006 |
| Anson Williams | 3 | 02/03/2000 - 04/26/2001 |
| Noel Nosseck | 3 | 12/14/2000 - 01/31/2002 |
| Brian Krause | 3 | 04/27/2003 |
| David Jackson | 3 | 01/18/2004 - 11/28/2004 |
| Michael Schultz | 2 | 04/20/2000 - 10/04/2001 |
| Les Sheldon | 2 | 02/10/1999 - 05/26/1999 |
| Michael Zinberg | 2 | 01/20/2000 - 05/11/2000 |
| John D. Kretchmer | 2 | 10/23/2005 - 02/19/2006 |
| Richard Compton | 2 | 10/28/1998 - 10/21/1999 |
| Richard Denault | 2 | 12/16/1998 - 04/07/1999 |
| Nick Marck | 1 | 11/04/1998 |
| Janice Cooke | 1 | 11/27/2005 |
| Ed Bokinskie | 1 | 04/27/2003 |
| Martha Mitchell | 1 | 11/04/1999 |
| Chip Scott Laughlin | 1 | 01/24/2002 |
| Abbey Campbell | 1 | 11/15/2001 |
| Derek Johnson | 1 | 05/02/2004 |
| Roxann Dawson | 1 | 04/06/2003 |
| Perry Lang | 1 | 11/02/2000 |
| James Marshall | 1 | 10/20/2002 |
| James Whitmore Jr. | 1 | 05/19/1999 |
| Allan Kroeker | 1 | 01/18/2001 |
| Ellen S. Pressman | 1 | 10/21/1998 |
| Don Kurt | 1 | 02/10/2000 |
| Timothy Lonsdale | 1 | 04/25/2002 |
| Elodie Keene | 1 | 05/12/1999 |
| Les Landau | 1 | 11/15/2001 |
| Richard Ginty | 1 | 11/11/1998 |
| John Kretchner | 1 | 09/19/2004 |
| Christopher Leitch | 1 | 10/10/2004 |
| Gilbert Adler | 1 | 11/18/1998 |
| People Name | Number of Episodes | Dates |
|---|---|---|
| Daniel Cerone | 15 | 11/09/2000 - 01/11/2004 |
| Chris Levinson | 13 | 10/21/1998 - 03/22/2001 |
| Zack Estrin | 13 | 10/21/1998 - 03/22/2001 |
| Krista Vernoff | 13 | 10/19/2000 - 05/09/2004 |
| Jeannine Renshaw | 11 | 10/19/2003 - 05/07/2006 |
| Alison Schapker | 10 | 11/16/2000 - 05/04/2003 |
| Monica Breen | 10 | 11/16/2000 - 05/04/2003 |
| Cameron Litvack | 10 | 11/23/2003 - 04/30/2006 |
| Henry Alonso Myers | 9 | 11/03/2002 - 05/08/2005 |
| Rob Wright | 6 | 10/31/2004 - 04/16/2006 |
| David Simkins | 6 | 10/21/1999 - 03/14/2004 |
| Mark Wilding | 4 | 10/13/2002 - 05/01/2005 |
| Andy Reaser | 4 | 04/18/2004 - 04/23/2006 |
| Edithe Swensen | 3 | 11/18/1998 - 04/28/1999 |
| Peter Hume | 2 | 12/14/2000 - 05/03/2001 |
| Erica Messer | 2 | 10/17/2004 - 02/20/2005 |
| Debra J. Fisher | 2 | 10/17/2004 - 02/20/2005 |
| Paul Jackson | 2 | 02/10/1999 - 05/05/1999 |
| Greg Elliot | 2 | 11/11/1998 - 01/20/1999 |
| Scott Lipsey | 2 | 10/26/2003 - 11/21/2004 |
| Liz Sagal | 2 | 11/20/2005 - 02/19/2006 |
| Michael Gleason | 2 | 02/17/2000 - 01/24/2002 |
| Valerie Mayhew | 2 | 11/11/1999 - 02/03/2000 |
| William Schmidt | 2 | 11/02/2000 - 02/08/2001 |
| Vivian Mayhew | 2 | 11/11/1999 - 02/03/2000 |
| Michael Perricone | 2 | 11/11/1998 - 01/20/1999 |
| Tony Blake | 2 | 02/10/1999 - 05/05/1999 |
| Peter Chomsky | 1 | 04/27/2000 |
| Sanford Golden | 1 | 05/11/2000 |
| Doug E. James | 1 | 04/17/2005 |
| Robert Masello | 1 | 04/06/2000 |
| Julie Hess | 1 | 11/16/2003 |
| Laurie Parres | 1 | 10/20/2002 |
| Natalie Antoci | 1 | 11/21/2004 |
| Whip Lipsey | 1 | 10/26/2003 |
| Elizabeth Hunter | 1 | 10/30/2005 |
| Andrea Stevens | 1 | 04/20/2003 |
