At 29 years old, Miles Heizer has this physical status:
Heizer starred in the short film Paramedic as Young James. Heizer has since guest-starred in episodes of Ghost Whisperer, Shark, Bones, and Private Practice.
In 2007, Heizer played the role of Davey Danner at 12 years old in the film Rails & Ties, for which he was nominated for the Young Artist Award for Best Leading Young Actor in a Feature Film. That same year, he had a recurring role as Joshua Lipnicki on the NBC medical drama television series ER. In 2010, he was cast as Drew Holt, the son of Lauren Graham's character, on the NBC drama series Parenthood. Heizer portrayed Drew until the series' ending in 2015.
In 2013, Heizer co-starred as Josh in the film Rudderless. In 2015, he had a supporting role as Marshall Lovett in the drama-thriller film The Stanford Prison Experiment, which premiered at the Sundance Film Festival on January 26. In 2016, Heizer starred as Tommy Mancuso in the film Nerve, and from 2017 to 2020, he played Alex Standall in the Netflix original series 13 Reasons Why. He also played Cal Price, one of Simon's classmates, in the 2018 movie Love, Simon.
In 2018, Heizer was featured in clothing retailer Gap's Logo Remix campaign. Heizer was also featured in Coach's fall and winter 2019 fashion campaigns.