Gary Sinise stars as Dr. Robert Ellman on "13 Reasons Why," the compassionate but direct therapist who works closely with Clay Jensen during the show’s fourth and final season. As Clay struggles with anxiety, trauma, grief, and the mounting pressure of recent events, Dr. Ellman becomes one of the few adults able to reach him in a meaningful way. The character brings steadiness and emotional clarity to the series, offering guidance during some of its most psychologically intense material.
Before joining "13 Reasons Why," Sinise is already widely known for a major career in film and television. He gains broad recognition through projects such as "Forrest Gump," "Apollo 13," "The Green Mile," "Truman," and "CSI: NY," building a reputation as a commanding dramatic actor across both film and television. By the time he joins the Netflix series, he is one of the most established performers to appear in its cast.
In addition to his acting work, Sinise also works as a director, producer, musician, and philanthropist. His career spans decades and includes leading roles, supporting performances, and significant work beyond acting itself. That breadth of experience informs his performance on "13 Reasons Why," where Dr. Ellman serves as a grounded, humane presence within the show’s final season.
Outside of "13 Reasons Why," Sinise remains associated with a long body of work across stage and screen, as well as with his public humanitarian efforts. His role as Dr. Ellman adds a notable late-series presence to the show, giving it an experienced performer in one of its most emotionally important adult roles. On "13 Reasons Why," he brings authority, warmth, and credibility to a character focused on helping Clay begin to confront what he has been carrying.
