David Milch Creator, Executive Producer Steven Bochco Creator, Executive Producer Jimmy Smits Det. Bobby Simone Actor Dennis Franz Det. Sgt. Andy Sipowicz Actor James McDaniel Lt. Arthur Fancy Actor Nicholas Turturro Detective James Martinez Actor Gordon Clapp Det. Greg Medavoy Actor Sharon Lawrence ADA Sylvia Costas Actor Gail O'Grady Donna Abandando Actor Justine Miceli Det. Adrienne Lesniak Actor Kim Delaney Diane Russell Actor Michael DeLuise Andy Sipowicz Jr. Guest Star Erik King Billy Stubbs Guest Star Mark Rolston Leon Broadus Guest Star Dennis Burkley Ernie 'Pig' Guest Star John DiSanti Frank Delva Guest Star Patricia Healy Alice Archer Guest Star David Purdham Dr. Barkley Guest Star Karen Ludwig Nurse Guest Star James Luca McBride Officer Shannon Guest Star Gerry Black Mario Walker Guest Star James Quattrochi Uniform 2 Guest Star Harley Zumbrum Biker Guest Star Mo Gallini Jay Dolinky Guest Star Andrew W. Walker Dr. Zisk Guest Star Ray LaTulipe Josh Astrachan Guest Star Colleen McQuade Heidi Archer Guest Star Mark Tinker Executive Producer Nicholas Wootton Writer Michael W. Watkins Director