Dr. Gregory Pratt - ER

Main cast, played by Mekhi Phifer

Episode 9x01: Chaos Theory (Sep 26, 2002)
Episode 9x02: Dead Again (Oct 3, 2002)
Episode 9x03: Insurrection (Oct 10, 2002)
Episode 9x04: Walk Like a Man (Oct 17, 2002)
Episode 9x05: A Hopeless Wound (Oct 31, 2002)
Episode 9x06: One Can Only Hope (Nov 7, 2002)
Episode 9x09: Next of Kin (Dec 5, 2002)
Episode 9x10: Hindsight (Dec 12, 2002)
Episode 9x11: A Little Help from My Friends (Jan 9, 2003)
Episode 9x12: A Saint in the City (Jan 16, 2003)
Episode 9x13: No Good Deed Goes Unpunished (Jan 30, 2003)
Episode 9x14: No Strings Attached (Feb 6, 2003)
Episode 9x15: A Boy Falling Out of the Sky (Feb 13, 2003)
Episode 9x16: A Thousand Cranes (Feb 20, 2003)
Episode 9x18: Finders Keepers (Apr 3, 2003)
Episode 9x19: Things Change (Apr 24, 2003)
Episode 9x20: Foreign Affairs (May 1, 2003)
Episode 9x21: When Night Meets Day (May 8, 2003)
Episode 10x01: Now What? (Sep 25, 2003)
Episode 10x03: Dear Abby (Oct 9, 2003)
Episode 10x04: Shifts Happen (Oct 23, 2003)
Episode 10x05: Out of Africa (Oct 30, 2003)
Episode 10x06: The Greater Good (Nov 6, 2003)
Episode 10x07: Death and Taxes (Nov 13, 2003)
Episode 10x08: Freefall (Nov 20, 2003)
Episode 10x09: Missing (Dec 4, 2003)
Episode 10x10: Makemba (Dec 11, 2003)
Episode 10x11: Touch and Go (Jan 8, 2004)
Episode 10x12: NICU (Jan 15, 2004)
Episode 10x13: Get Carter (Feb 5, 2004)
Episode 10x14: Impulse Control (Feb 12, 2004)
Episode 10x15: Blood Relations (Feb 19, 2004)
Episode 10x16: Forgive and Forget (Feb 26, 2004)
Episode 10x17: The Student (Apr 1, 2004)
Episode 10x18: Where There's Smoke (Apr 8, 2004)
Episode 10x19: Just a Touch (Apr 22, 2004)
Episode 10x20: Abby Normal (Apr 29, 2004)
Episode 10x21: Midnight (May 6, 2004)
Episode 10x22: Drive (May 13, 2004)
Episode 11x01: One for the Road (Sep 23, 2004)
Episode 11x03: Try Carter (Oct 14, 2004)
Episode 11x04: Fear (Oct 21, 2004)
Episode 11x05: An Intern's Guide to the Galaxy (Nov 4, 2004)
Episode 11x06: Time of Death (Nov 11, 2004)
Episode 11x07: White Guy, Dark Hair (Nov 18, 2004)
Episode 11x08: A Shot in the Dark (Dec 2, 2004)
Episode 11x09: 'Twas the Night (Dec 9, 2004)
Episode 11x10: Skin (Jan 13, 2005)
Episode 11x11: Only Connect (Jan 20, 2005)
Episode 11x13: Middleman (Feb 3, 2005)
Episode 11x14: Just As I Am (Feb 10, 2005)
Episode 11x15: Alone in a Crowd (Feb 17, 2005)
Episode 11x16: Here and There (Feb 24, 2005)
Episode 11x17: Back in the World (Mar 24, 2005)
Episode 11x18: Refusal of Care (Apr 21, 2005)
Episode 11x19: Ruby Redux (Apr 28, 2005)
Episode 11x20: You Are Here (May 5, 2005)
Episode 11x21: Carter est Amoureux (May 12, 2005)
Episode 11x22: The Show Must Go On (May 19, 2005)
Episode 12x01: Cañon City (Sep 22, 2005)
Episode 12x02: Nobody's Baby (Sep 29, 2005)
Episode 12x03: Man with No Name (Oct 6, 2005)
Episode 12x04: Blame It on the Rain (Oct 13, 2005)
Episode 12x05: Wake Up (Oct 20, 2005)
Episode 12x06: Dream House (Nov 3, 2005)
Episode 12x07: The Human Shield (Nov 10, 2005)
Episode 12x08: Two Ships (Nov 17, 2005)
Episode 12x09: I Do (Dec 1, 2005)
Episode 12x10: All About Christmas Eve (Dec 8, 2005)
Episode 14x16: Truth Will Out (Apr 24, 2008)
Episode 14x19: The Chicago Way (May 15, 2008)

Guest cast, played by Mekhi Phifer

Episode 8x18: Orion in the Sky (Apr 4, 2002)
Episode 8x19: Brothers & Sisters (Apr 25, 2002)
Episode 8x20: The Letter (May 2, 2002)
Episode 8x22: Lockdown (May 16, 2002)