He was born and raised in Chicago, Illinois. Keong earned a Bachelor of Arts in English literature from the University of Chicago.
In addition to his skills as an improvisational theater actor and teacher, Keong has worked at The Public Theater in New York, and the Steppenwolf Theater in his hometown, as well as around the globe, in places such as Canada, Cuba, England, and the Czech Republic.
He portrayed neurosurgeon Dr. Sung Park in the TNT medical drama Monday Mornings in 2013.
|2003||Law & Order: Criminal Intent||William Suan||(A Person of Interest)|
|2004||Law & Order||Delivery Man||(Evil Breeds)|
|2009||The Flying Scissors||Bruce Wong|
|2010||The Last Airbender||Earthbending Father|
|The Forgotten||Robert Chung||(Patient John)|
|2011||My Freakin' Family||Pastor Kim||TV Movie|
|Grey's Anatomy||Dr. Park||(Heart-Shaped Box)|
|The Protector||Dr. Jia Tao||(Help)|
|Glee||Mike Chang Sr.||2011 - 12 (Asian F, The First Time, Hold on to Sixteen, and Goodbye)|
|2012||Harry's Law||Arthur Choi||(Breaking Points)|
|Mike & Molly||Dr. Shufeldt||(Peggy Goes to Branson)|
|Watching TV with the Red Chinese||Wa|
|2013||Sullivan & Son||Edwin||(The Pilot, One More Time)|
|Being Social||Guest||(Diversity N the Entertainment Industry)|
|Monday Mornings||Dr. Sung Park||(10 episodes)|
|Olympus Has Fallen||Lee Tae-Woo|
|Inventing Adam||Jonathan 'Johnny' Wang|
|Time-stoppers||Brad Mickleson||short and post-production|
|Growing Up Fisher||Mr. Han||(Trust Fall)|