Popularity: 2
| Creator: | Paul Attanasio | 
|---|
| Name | Character | Episodes | 
|---|---|---|
| Rhona Mitra | Dr. Alejandra Ollie Klein | 21 | 
| Eric Dane | Dr. Wyatt Cooper | 21 | 
| Hamish Linklater | Dr. Bruce Cherry | 21 | 
| Kevin J. O'Connor | Dr. Michael Pirandello | 21 | 
| Andre Braugher | Dr. Ben Gideon | 21 | 
| Rubén Blades | Dr. Max Cabranes | 21 | 
| Jascha Washington | Eli Gideon | 21 | 
| Ravi Kapoor | Dr. Sid Shandar | 21 | 
| Russell Hornsby | Dr. Aaron Boies | 21 | 
| Michael Nouri | Cardiologist | 2 | 
| Riley Smith | Derek Fitzhugh | 2 | 
| Rosalind Chao | Claire Hines | 1 | 
| Peter Jacobson | 1 | |
| Kevin Weisman | Mr. Ryan | 1 | 
| Marlee Matlin | 1 | |
| Stephen Macht | 1 | |
| Deborah May | Doctor | 1 | 
| Freda Foh Shen | Mrs. Lee | 1 | 
| Ed Begley Jr. | Haley's Father | 1 | 
| Azura Skye | Haley | 1 | 
| Lesley Fera | Janet Beckman | 1 | 
| Nicolas Coster | 1 | |
| Lennie Loftin | Alex Peterborough | 1 | 
| Mary Mara | Jane Lefkowitz | 1 | 
| Nicholas Pryor | Dr. Young | 1 | 
| Maile Flanagan | Nurse Daley | 1 | 
| Elizabeth Dennehy | Mrs. Fitzhugh | 1 | 
| Elizabeth Ruscio | Karen Peterborough | 1 | 
| Hedy Burress | Money Raspberry Dupree | 1 | 
| Randy Oglesby | Board Member | 1 | 
| Pamela Dunlap | Marge | 1 | 
| Molly Bryant | Diantha | 1 |