Russell Schaefer, 28, slammed his pickup truck into a Second Precinct vehicle on Jericho Turnpike, west of Commack Road, at 9:50 on Thursday night.
Schaefer was treated at St. Catherine of Siena Medical Center in Smithtown for minor injuries.
The officer was taken to Huntington Hospital, also for minor injuries.
The wrecked police cruiser had replaced a vehicle totaled in another drunk driving crash two years ago that killed an officer.
The vehicle, No. 222, replaced cruiser No. 218, which was being driven by Officer Glen Ciano when a drunken driver hit his car in February 2009.
The force of the impact sent the cruiser into a tree, setting it ablaze. Ciano was killed.