Question: who played dr mark greene's daughter on er
Answer: 1994 -- 1996 , 1996 -- 1998 , 2001 -- 2002 Hauser , Cole Cole Hauser Ex-husband of Samantha Taggart Steve Curtis Hazlewood , Rebecca Jane Rebecca Jane Hazlewood Cousin of Neela Rasgotra Jaspreet 2008 Helgenberger , Marg Marg Helgenberger Doug Ross 's girlfriend & his father 's boss Karen Hines Hirsh , Hallee Hallee Hirsh Daughter of Mark Greene ( Earlier played by Yvonne Zima ) Rachel Greene 2001 -- 2002 ; 2004 ; 2009 Hudson , Ernie Ernie Hudson Father of Michael Gallant Colonel James Gallant 2006 Hurd , Michelle Michelle Hurd Girlfriend of Kerri Weaver Courtney Brown 2006 -- 2007 Janes , Dominic Dominic Janes Son of Samantha Taggart Alex Taggart 2005 -- 2009 Keach , Stacy Stacy Keach Father of Tony Gates Mike Gates 2007 Greenfield , Chloe Chloe Greenfield Daughter of Tony Gates Sarah Gates 2006 -- 2009 Kher , Anupam Anupam