The Bay Shore oncologist who was arrested during a sting operation in March 2010 and convicted of selling prescriptions has been arrested again on a new charge for the same offense, officials said.

Binod Singh, 42, of Oakwood Boulevard, and an associate, Steven Chin, were arrested Friday by federal Drug Enforcement Administration agents for selling oxycodone prescriptions, said Robert Nardoza, a spokesman for the U.S. attorney's office.

Both men are scheduled to be arraigned Saturday in federal court in Brooklyn.

Their attorneys could not be reached for comment Friday night.

According to an affidavit submitted by a federal agent who was part of the recent undercover operation, Singh would sell the prescriptions calling for 120 to 180 pills of 30mg doses of oxycodone for between $1,200 and $1,800, and he accepted only cash as payment.

The agent said a confidential informant observed Singh complete a transaction at 111 Maple Ave. in Bay Shore, using DEA numbers of licensed physicians to prepare prescriptions for fake patients in exchange for cash, and that Chin printed out the paper on which the fraudulent prescriptions were written.

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After his 2010 arrest, Singh was ordered by a judge to surrender his medical license and passport.

Police stopped him on March 26, 2010, as he drove erratically.

He was charged with criminal diversion of prescription medications, a misdemeanor, criminal sale of a controlled substance and driving while intoxicated. His drunken driving charge was upgraded to a felony because he had been convicted of driving while under the influence or with alcohol or drugs.

He was convicted in that case and released in October but a joint task force of police and agents has been tracking his movements since he was released, according to the affidavit.