George Clooney as Dr. Doug Ross

George Clooney, Who Portrayed the Charming Dr. Doug Ross, Used Er as a Launchpad to Hollywood Superstardom.

In 2005, Clooney Directed and Starred in Good Night, and Good Luck, a Critically Acclaimed Drama. the Film Earned Several Academy Award Nominations, Including Best Director for Clooney.

Julianna Margulies as Nurse Carol Hathaway

Julianna Margulies Played the Dedicated Nurse Carol Hathaway. She Left Er in 2000 and Wasted No Time in Pursuing a Diverse Range of Projects. Margulies’s Most Notable Post-Er Endeavor Came in the Form of the Critically Acclaimed Tv Series the Good Wife. the Show Premiered in 2009 and Ran for Seven Seasons. for Her Good Wife Role as Alicia Florrick, a Lawyer Navigating the Legal World While Dealing with Personal Challenges, Margulies Received Critical Acclaim, Including a Primetime Emmy Award, a Golden Globe Award and Multiple Screen Actors Guild Awards.

Noah Wyle as Dr. John Carter

Noah Wyle’s Portrayal of Dr. John Carter, a Medical Student Who Eventually Becomes an Attending Physician, Was One of the Most Enduring and Beloved Characters on the Cast of Er. He Began His Role on the Show in 1994 and Remained a Central Figure Throughout the Series, Evolving from a Naive Young Intern to a Seasoned Doctor. Wyle’s Heartfelt and Compelling Performance Endeared Him to Audiences.

Sherry Stringfield as Dr. Susan Lewis

Sherry Stringfield’s Portrayal of Dr. Susan Lewis Was a Pivotal Part of Er from Its Inception in 1994. She Played a Dedicated and Compassionate Emergency Room Physician, Endearing Her Character to Both the Show’s Characters and Its Viewers. After Spending Several Year's as One of the Show’s Key Characters, Sherry Stringfield Made the Decision to Leave Er in 1996, During the Third Season.

Anthony Edwards as Dr. Mark Greene

Anthony Edwards’s Character, Dr. Mark Greene, Was a Fan Favorite from the Start in 1994. as the Show’s Medical Director and an Empathetic and Dedicated Physician, Dr. Greene’s Character Resonated Deeply with Viewers. Edwards’s Compelling Performance Brought the Character to Life, and His Presence Became Synonymous with the Enduring Appeal of the Series.

Eriq La Salle as Dr. Peter Benton

Eriq La Salle’s Portrayal of Dr. Peter Benton Was a Central Figure in the Cast of Er. as a Brilliant, No-Nonsense Surgeon, Dr. Benton’s Character Provided an Essential Counterpoint to the Often Chaotic Emergency Room Setting.

Laura Innes as Dr. Kerry Weaver

Dr. Kerry Weaver Was Introduced to the Viewers of Er During Its Second Season in 1995, and Laura Innes’s Portrayal of the Character Instantly Added Depth to the Show. Dr. Weaver Was a Complex Character Known for Her Strong-Willed, No-Nonsense Attitude and Her Dedication to Her Profession. She Was One of the Few Disabled Characters on Television at the Time, with Dr. Weaver Using a Crutch Due to Her Physical Disability.

Alex Kingston as Dr. Elizabeth Corday

Alex Kingston’s Character, Dr. Elizabeth Corday, Was Introduced to the Viewers of Er During Its Fourth Season in 1997. Dr. Corday Was a Skilled and Determined British Surgeon Who Joined the County General Hospital Staff. Kingston’s Performance Brought an Extra Layer of Complexity to the Series as Dr. Corday Grappled with the Challenges of Working in a High-Pressure Environment Far from Her Native Country.

Maura Tierney as Dr. Abby

Maura Tierney’s Character, Dr. Abby Lockhart, Was Introduced to the Viewers of Er During Its Sixth Season in 1999. Dr. Lockhart Was a Complex Character Who Evolved Throughout the Series, Beginning as a Nurse Before Becoming a Medical Student and Eventually a Resident.

Goran Visnjic as Dr. Luka Kovac

Goran Visnjic a Croatian Actor, Captivated Audiences as Dr. Luka Kovac. His Character’s Arrival in the Sixth Season Introduced a New Dynamic to the Show. Following His Success on Er, Visnjic Ventured into the World of Film.

Deezer D as Nurse Malik Mcgrath

Deezer D, Whose Real Name Is Dearon Thompson, Portrayed Nurse Malik Mcgrath in the Cast of Er. Nurse Mcgrath Was a Dedicated and Skilled Nurse Who Worked Alongside the Doctors and Staff of the Emergency Room. Malik Was Known for His Witty and Often Humorous Interactions with Both Patients and Colleagues, Providing a Light-Hearted Balance to the Often Intense and High-Stress Environment of County General.

Laura Cerón as Nurse Chuny Marquez

Laura Cerón’s Character, Nurse Chuny Marquez, Was a Dedicated and Compassionate Nurse Who Worked Tirelessly in the Emergency Room of County General Hospital. Her Character Was Known for Her Warm and Nurturing Personality, and Her Interactions with Both Patients and Colleagues Showcased Her Caring Nature. Ceron Continued on the Show for 14 Seasons.

Yvette Freeman as Nurse Haleh Adams

Yvette Freeman, a Talented Actress and Singer, Made a Lasting Impression with Her Role as Nurse Haleh Adams. Freeman Played the Role for an Impressive 13 Seasons.

Cast of 'Er' Then and Now: Where Are They Today?

By James H. Sterling

• Oct 8, 2026 • 12 min read

Cast of 'Er' Then and Now: Where Are They Today?

Direct Answer • Key Takeaway

The Cast of Er Captured the Hearts of Millions During Its 15-Season Run, Starting in 1994 and Ending in 2009. the Series Attracted a Dedicated Fan Base from the Start and Attracted More and More Viewers as the Year's Went On, Making It One of the Most Popular and Enduring Medical Dramas in Tv History.

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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