| | | | |
| Series Cast Summary (27 of 752) (View more cast) | Episode Count | Year Range | STARmeter™ |

| Noah Wyle ... Dr. John Carter / ... | 255 | (1994-2009) | 1,715 |
 | Laura Innes ... Dr. Kerry Weaver / ... | 251 | (1995-2009) | 5,874 |

| Laura Cerón ... Nurse Chuny Marquez | 219 | (1995-2009) | 6,814 |

| Maura Tierney ... Nurse Abby Lockhart / ... | 190 | (1999-2009) | 1,511 |
 | Deezer D ... Nurse Malik McGrath | 188 | (1994-2009) | 12,926 |

| Goran Visnjic ... Dr. Luka Kovac / ... | 186 | (1999-2009) | 1,691 |
 | Yvette Freeman ... Nurse Haleh Adams | 185 | (1994-2009) | 14,548 |

| Anthony Edwards ... Dr. Mark Greene / ... | 182 | (1994-2009) | 2,139 |

| Eriq La Salle ... Dr. Peter Benton / ... | 173 | (1994-2009) | 4,925 |

| Emily Wagner ... Doris Pickman | 167 | (1994-2009) | 9,870 |

| Alex Kingston ... Dr. Elizabeth Corday / ... | 161 | (1997-2009) | 2,555 |

| Lynn A. Henderson ... Pamela Olbes | 148 | (1995-2009) | 15,091 |

| Sherry Stringfield ... Dr. Susan Lewis / ... | 143 | (1994-2009) | 5,069 |

| Abraham Benrubi ... Jerry Markovic | 141 | (1994-2009) | 2,988 |

| Mekhi Phifer ... Dr. Gregory Pratt / ... | 136 | (2002-2009) | 2,510 |

| Julianna Margulies ... Nurse Carol Hathaway / ... | 136 | (1994-2009) | 2,222 |

| Parminder Nagra ... Dr. Neela Rasgotra / ... | 130 | (2003-2009) | 2,856 |
 | Troy Evans ... Frank Martin / ... | 129 | (1994-2009) | 12,710 |

| Linda Cardellini ... Nurse Samantha Taggart / ... | 127 | (2003-2009) | 323 |

| Paul McCrane ... Dr. Robert Romano / ... | 127 | (1997-2009) | 5,029 |

| Lily Mariye ... Nurse Lily Jarvik | 127 | (1994-2009) | 16,179 |

| Ming-Na ... Dr. Jing-Mei Chen / ... | 118 | (1995-2004) | 1,246 |

| Montae Russell ... Dwight Zadro | 117 | (1995-2009) | 27,101 |
 | Scott Grimes ... Dr. Archie Morris / ... | 113 | (2003-2009) | 1,671 |

| Ellen Crawford ... Nurse Lydia Wright | 113 | (1994-2009) | 13,704 |
 | Conni Marie Brazelton ... Nurse Connie Oligario | 113 | (1994-2003) | 26,581 |

| George Clooney ... Dr. Doug Ross | 109 | (1994-2009) | 203 |
View more cast |