In 2018, Blum starred in Netflix's smash hit series, You. | 22 Words

Actor Mark Blum, best known for his roles in Desperately Seeking Susan, where he co-starred alongside Madonna, Law & Order, and Succession, has died today after suffering complications from COVID-19.

He was sixty-nine-years-old.

Here's the full story:

Mark Blum's lucrative acting career began in 1980...

Blum's first appearance on-screen was a guest role on medical drama, St. Elsewhere. 

The star has since enjoyed a jam-packed, successful acting career.

via: imdb

In 1985, the actor notably hit the big screen alongside singing icon, Madonna, in the comedy-drama Desperately Seeking Susan. Blum starred as Gary Glass, Rosanna Arquette's husband, in the movie.

His film resumé also included several other popular spectacles...

Including the likes of Just Between Friends (1986), Blind Date (1987), The Presidio (1988), Denise Calls Up (1995) and Shattered Glass (2003).

Blum was also a huge figure in television.

The West Wing, Frasier, Roseanne, NYPD Blue, and The Practice, are just a few noteworthy titles he's starred in.

In more recent years...

The actor showed no signs in slowing down - landing roles in Law & Order, Succession, and The Good Fight.

In 2018, Blum starred in Netflix's smash hit series, You.

He starred as Mr. Mooney, the bookstore owner and Joe Goldberg’s extremely creepy father figure.

Blum was also a big player in the off-Broadway scene.

via: Getty Images

He's worked on the likes of  Kenneth Lonergan's The Waverly Gallery, Terrence McNally's It's Only a Play, Amy Herzog's After the Revolution, and Craig Lucas' The Singing Forest. 

Blum’s last-ever role will be a posthumous appearance on the upcoming fifth season of Showtime’s Billions.

via: Getty Images

Devastatingly, on Wednesday, March 27th, the star passed away at NewYork-Presbyterian hospital from complications relating to COVID-19.

Blum's friends confirmed the tragic news of his death today.

He leaves behind his wife, actress Janet Zarish.

Tributes have poured in for the star.

"This is a painful loss to our SAG-AFTRA family," union President Gabrielle Carteris said. "Mark Blum understood that all performers working in this industry share the same employers and that our strength depends on our unity. He was a visionary."

Rebecca Damon, executive vice president of the New York local, also spoke out following his tragic death.

"Those of us lucky enough to have known him will treasure our memories of a gifted actor, a master teacher, a loyal friend, and a beautiful human," she said. "I always appreciated Mark's clear perception of complex situations. Mark was smart, funny and a true actor's actor."

Madonna also paid tribute to her former co-star.

"I Want to Acknowledge the Passing of a remarkable Human, fellow actor and friend Mark Blum, who succumbed to Coronavirus. This is really tragic and my heart goes out to him, his family and his loved ones. I remember him as funny warm, loving and professional when we made Desperately Seeking Susan in 1985!!, she wrote on Instagram. "Another reminder that this virus is no joke, nothing to be casual about or pretend won't affect us in some way.  we need to stay grateful -be hopeful- help each other-and follow the quarantine rules!"

The actor has been described as "so generous, so kind, so humble, so talented."

"May he rest in peace knowing that he transformed the lives of so many and was cherished by so many; me among them."

Twitter was flooded with tributes to the beloved actor.

He clearly had a huge impact on my peoples' lives.

This is utterly devastating news.

Rest in peace Mark.