The cause of death is unknown, but a source close to the family said Poddubny had collapsed during the late-morning hours at his sister's house where he was living.
Drafted 90th overall by the Edmonton Oilers in 1980, Poddubny played 11 NHL seasons with stops in Edmonton, Toronto, with the New York Rangers, Quebec and New Jersey. He amassed 184 goals and 238 assists in 468 games and topped the 30-goal plateau three times.
Poddubny spent five seasons with the Leafs. His best year in Toronto was 1982-83, when he had 28 goals and 59 points.
After finishing his playing career in the American Hockey League with the Worcester IceCats, Poddubny coached the Anchorage Aces in the now-defunct West Coast Hockey League.
He returned home in 2003 to spend time with his children and was involved in coaching and hockey celebrity appearances.
"It's funny. I come back and everyone still comes up and talks to me. That's really cool," Poddubny said in an interview in 2003. "I've always really appreciated that."