Harry Zenonos, age 64, of Huntington Station, was last seen at his Columbia Street residence at around 6 a.m. Friday, March 1.
Suffolk County Police said Zenonos suffers from dementia and may be in need of medical attention.
He is described as 5-foot-7 and 170 pounds, with gray hair and brown eyes. At the time of his disappearance, he was wearing a brown jacket and gray pants.
Police said Zenonos may have traveled to New York City.
Anyone with information is asked to contact the Suffolk County Police Department at 631-852-6688 or call 911.
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