James Mangino, age 70, of East Northport, was last seen on 8th Avenue at around 3 p.m. Monday, July 29.
Suffolk County Police said he suffers from dementia and may be in need of medical attention.
Mangino was driving a 2018 white Toyota Camry with New York registration CVW-4099. He was wearing a gray hat with red writing and gray sweatpants.
He is 6-foot-2 and 215 pounds, with gray hair and brown eyes.
Anyone with information is asked to contact the Suffolk County Police Department at 631-854-8217.
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