A former Bay Shore cancer doctor who conspired to distribute oxycodone was sentenced Tuesday to 71/2 years in prison.

Binod Singh was arrested in 2012 on charges of selling 40 forged prescriptions for 120 to 180 pills of 30-milligram doses of oxycodone. His price for each was between $1,200 and $1,800 in cash, prosecutors said.

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Singh and his attorney, George Harmel of Central Islip, told U.S. District Judge Leonard Wexler Tuesday that the ex-oncologist's crimes were the result of his alcoholism. "I couldn't function without having a drink first," Singh, who lost his medical license in 2011, said at his sentencing.

Wexler, however, said the former physician's scheme was motivated by money.

"He threatened to shoot people if they squealed," Wexler said, alluding to a vow prosecutors said Singh made to kill anyone around him wearing a wire for law enforcement.

Singh, who faced up to a little more than 11 years in prison, will receive credit for the roughly 2 1/2 years served.

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Prosecutors said Singh prescribed painkillers using the Drug Enforcement Agency numbers of licensed physicians. He obtained them illegally with the help of a 25-year-old computer expert, who was also arrested, and employed several others, officials said. In 2010, Singh was charged with criminal diversion of prescription medications, a misdemeanor, criminal sale of a controlled substance and driving while intoxicated. He was convicted and sentenced to 4 years in state prison. Shortly after his release in 2012, authorities arrested him in connection with the pill dealing scheme.