An Orange County schoolteacher cheated his school district out of tens of thousands of dollars via insurance fraud, police said.

Timothy G. Johnson, 49, of Newburgh, was charged Thursday morning with second-degree insurance fraud and second-degree grand larceny, felonies, State Police at Monroe said.

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Johnson, a teacher with the Washingtonville School District, knowingly carried an unqualified dependent on his health insurance plan for about 12 years, police said. The district, which uses the Orange-Ulster Boards of Cooperative Educational Services health plan, incurred losses of more than $50,000 because of Johnson's fraud, police said.

State Police conducted the investigation with the Orange County district attorney's office.

Johnson turned himself in to police Thursday, accompanied by his attorney, John Ingrassia of Newburgh, police said. He was arraigned before Washingtonville Village Justice Steven Smith and released without bail. His next court date is Feb. 13 at 5 p.m.

Calls to Ingrassia and to Washingtonville schools Superintendent Roberta Greene were not immediately returned Thursday.

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Health care fraud costs the country an estimated $80 billion a year, according to FBI statistics.