With his propulsive new emergency room medical series “The Pitt,” Noah Wyle steps back to where he began.

As the youngest member of the “E.R.” cast, Wyle, 53, continued with that ground-breaking, star-making series from its 1994 debut to its final episode in 2009.

“The Pitt” is the derisive nickname given to the rundown Pittsburgh hospital where Wyle’s Dr. Michael “Robby” Rabinavitch leads a dedicated team through the daily horrors and miracles that comprise an ER.

In a Zoom interview, Wyle noted that this return was a choice with perhaps a sprinkling of earned wisdom.

“This feels a little bit like that expression, I wish I could go back to high school, knowing what I know now,” he said. “To go back into an arena that you did a long time ago. But with a little bit more wisdom and maturity. A little bit more perspective on life.”

The 15-year gap, “Seemed like an appropriate period of time. It didn’t feel like I was just back to play my greatest hits again.”

His Dr. Robby is a commanding, even inspiring figure as a series of atrocities, from bullets, drugs and more, offer a mountain of horrors that must be quickly resolved.

“The ‘addiction’ my guy is dealing with, PTSD, is a holdover from the really difficult choices he had to make during the height of COVID. Ultimately, everybody had terrible consequences.

“So he’s got this undealt with, unlooked at trauma that he’s never been able to examine or synthesize. Because the need has never let up.

In the real world as well as a medical series Wyle said “since the pandemic, emergency rooms have continued to be overrun and understaffed.

“He probably should have left years ago, but there are very few better, and the need hasn’t lessened. He is a little bit addicted to being abused.”

“Pitt” is a complex show: Each hour-long episode’s an hour of real time. The 15-show season covers one shift in the life of this ER.

The amount of medical information alongside the complexities of navigating through the ER’s teeming humanity – how does that work?

“This is going back to 30 years ago, when we were doing 8 to 12 pages every day.

“It’s dialog heavy, and the scripts are very long because we talk very fast. So a lot of memorization, a lot of rehearsal on your own time.

“That way you come in not wasting company time with trying to figure out what you need to do. It asks a lot of the cast and crew to work in this format.

“It asks,” he said as his dog strolled by, “a lot of my wife, who gets pressed into service running lines with me every night.”

“The Pitt” streams its first 2 episodes Jan. 9 on MAX