Abby Lockhart

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Abby Lockhart
Maura Tierney as Abby Lockhart
First appearance	November 25, 1999 (6x08, "Great Expectations")
Last appearance	March 19, 2009 (15x20, "Shifting Equilibrium")
Portrayed by	Maura Tierney
Duration	1999, 2000–08, 2009
In-universe information
Gender	Female
Title	Medical Student (2000, 2003–2004) Intern (2004–2005) Resident (2005–2008) Attending Physician (2008)
Occupation	OB/GYN Nurse (1999–2000) ER Nurse (2000–2002) Nurse manager (2002–2004) Physician (2004–2008)
Family	Eddie Wyczenski (father) Maggie Wyczenski (mother) Eric Wyczenski (younger brother)
Spouse	Richard Lockhart (ex-husband) Luka Kovač (husband)
Significant others	John Carter (ex-boyfriend) Jake Scanlon (ex-boyfriend)
Children	Josip "Joe" Kovač (son with Luka, born on May 18, 2006)
Born	January 10, 1969

Abigail Marjorie "Abby" Lockhart, M.D. (née Wyczenski) is a fictional character from the NBC medical drama series ER, portrayed by Maura Tierney. She first appears as a guest star in the first half of the sixth season, before becoming a main character later that season, appearing until the beginning of the fifteenth season. Tierney returned to make one final guest appearance later in season fifteen. ^{[citation needed]}