The 28-year-old Mascia pleaded guilty in May to shooting himself and then claiming he was shot on the Southern State Parkway last October.
He was sentenced to six months in jail and five years' probation. He will also have to undergo mental health treatment and a civil judgement will be ordered for $289,511.
While he was still on the force, Mascia shot himself in the leg and then falsely claimed he was ambushed by another driver after initiating a traffic stop.
It led to a multi-state manhunt. Prosecutors say the elaborate hoax cost taxpayers thousands of dollars.
Officials say a simple search of the former trooper's phone prior to the incident revealed a Google search of how it feels to get shot and where he could potentially shoot himself.
There was research on temporary plate tags he would later describe for his imaginary assailant's car and hints at why he chose the Southern State Parkway -- because it had no cameras or license plate readers.
"Thomas Mascia's actions were as meticulously calculated as they were disgraceful. His lies wasted hundreds of hours of law enforcement manpower, deeply cost taxpayers in Nassau County, and betrayed the public's trust of those in uniform," said Nassau County District Attorney Anne Donnelly. "I want this case to be a reminder that serving the public in law enforcement is an enormous privilege. It's one that should never be taken lightly. No one is above the law, and I am pleased to say that justice was served because the system worked."
Mascia's parents were also charged with possessing an illegal firearm that was found at the foot of their bed during a search.
His father pleaded guilty to one count of criminal possession of a firearm and was sentenced to five years' probation on Wednesday.
His mother pleaded guilty to criminal possession of a weapon and was sentenced to conditional discharge on Wednesday.
There is still an ongoing debate over his motive.
"There was an ex-girlfriend he was trying to impress and I believe he wanted the public to see him as a hero," Donnelly said.
However his attorney said it happened as a result of untreated mental health issues.
"Nobody really wants to discuss the elephant in the room, which is why did this occur? It doesn't just occur out of the blue, it occurs because it was a result of many years of mental health issues that were never treated," defense attorney Jeffrey Lichtman said.
Lichtman said Mascia is mortified of his behavior and regrets it.
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