George Clooney portrayed Dr. Doug Ross on ER from 1994 to 1999. He was approximately 33 years old when the series began and turned 38 by the time he departed in 1999. This profile breaks down his age at key milestones during his five-year run, supported by production dates and publicly available casting records.
Key tenure and age milestones
Below is a concise overview of George Clooney’s age during his time on ER, aligned to production and air dates where available.
| Date or Period | Role / Event | Verified Detail | Age (approx.) |
|---|---|---|---|
| September 1994 | Series premiere; Clooney’s first episode | Contract signing & episodic airdate | 33 |
| 1996 | Peak of ER popularity; season 3 | Ongoing filming through midseason | 35–36 |
| May 1999 | Final ER episode with Clooney | Season 5 finale airdate: May 20, 1999 | 38 |
Career context before ER
Before landing ER, Clooney appeared in several television series and made-for-TV movies, building name recognition through daytime drama and guest roles. His breakout opportunity arrived when he was cast as pediatric emergency medicine fellow Doug Ross. Production timelines for the pilot and early seasons placed him in his early 30s at the outset, shaping the profile of a younger, charismatic physician character that resonated with viewers.
During ER: Main milestones and contributions
Over five seasons, Clooney helped define the show’s early tone. He balanced emotionally charged triage scenarios with nuanced character work, contributing to the series’ reputation for medical realism and ensemble storytelling. His tenure coincided with some of the show’s highest-rated episodes, cementing his status as a leading man in broadcast television.
Notable developments during his run
- Established Doug Ross as a fan-favorite Attending Physician in Emergency Medicine.
- Elevated ensemble dynamics with long-form story arcs spanning multiple episodes.
- Set the stage for future character evolutions that extended beyond his departure.
Departure and legacy
Clooney left ER in 1999 to pursue film opportunities and expand into directing and producing. His exit marked the end of an era for the series, but the character he originated remained influential in shaping the trajectory of subsequent emergency medicine dramas. Industry coverage consistently cites his years on ER as pivotal to his career trajectory.
By the numbers: Quick comparison
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Tenure on ER | 1994–1999 | Network press archives |
| Age at series start | 33 | Birthdate: May 6, 1961; casting records |
| Age at series end | 38 | Finale airdate: May 20, 1999; production schedules |