He was born in Merrick, New York, the brother of producer/actor Scott Bloom and musician Mike Bloom. One of his earlier roles was the horror-comedy film The Stuff, which also starred his brother Scott (they played brothers onscreen in the film as well).
His first major acting role was as Dusty Donovan in the soap opera As the World Turns, which he played for several years. During that run, Bloom became the youngest winner of a Daytime Emmy Award in the category of Outstanding Young Leading Man. Despite his success, he left to star in several television movies and myriad guest appearances on television series such as Melrose Place, 2000 Malibu Road, CSI: Miami, Law & Order: Special Victims Unit, Drive and HBO's Oz.
Bloom is expanding his resume to include voice work on both animated projects and video games. His hobbies include writing, cooking, and designing and building furniture. He owns and runs an online store called Animal World Network, and he practices a rare martial art known as bojuka.
His recent work has been the voice of Alex Shepherd in Silent Hill: Homecoming and Kane in Kane & Lynch: Dead Men and its sequel Kane & Lynch 2: Dog Days (among many other notable video games) the role of fanatical cult leader Jonas Sparrow in the Joss Whedon show Dollhouse, and the voice of Jackie Estacado in The Darkness II. He is presently cast in a number of voice over parts, both in video games as well as direct-to-video projects.