"I hope everyone will respect my need for privacy as I take some time for myself and for my family," Rezaian said.
The 39-year-old reporter, whose reporting career has focused on writing about the relationship between the U.S. and Iran, added that he someday wants "to get back to writing the U.S.-Iran story."
Rezaian is currently with his family at a "very comfortable guest house" on a Swiss Air Force base in Landstuhl, Germany.
"I want everyone to know that I’m feeling fine, and I feel lucky to be here at a place where I can get such terrific care," he said. "But I won’t be saying anything further for awhile."
Rezaian was one of five U.S. citizens freed by Iran as part of a prisoner swap.
He recently opened up about his experiences being imprisoned in Iran, saying that at one point he spent 49 days in solitary confinement. He was later placed in a 15-by-20-foot room with three cots and no mattresses, the Washington Post reported.
Rezaian "found escape in the fiction he was allowed to read, and today he was avidly reading whatever he wanted," Post editors wrote in a memo to staff about his release.
The freed journalist also told his co-workers he looked forward to seeing them soon, saying, "I hear there's going to be a big party."