It happened in Coram at about 7:30 a.m. on Tuesday, July 20.
Suffolk County Police said a Jeep was northbound on Route 112, and the driver was turning left into 1650 Route 112, when her vehicle was struck by a southbound motorcycle.
The driver of the motorcycle, Brandon Blades, age 32, of Port Jefferson Station, was taken to the hospital where he was pronounced dead.
The 45-year-old woman, a Ronkonkoma resident who was driving the Jeep, was hospitalized to be treated for minor injuries.
The motorcycle and the Jeep were impounded for safety checks, SCPD said.
Anyone with information on the crash is asked to contact police at 631-854-8652.
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