RUTLAND, Vt. — A former Vermont doctor who treated people for substance addiction has been charged with prescription and Medicaid fraud.

Mark Logan pleaded not guilty on Monday and could face up to 66 years in prison if convicted of the nine felony charges.

Court documents say he billed for office visits that never occurred and, wrote prescriptions for an employee and kept the drugs for his own use. Police accused him of defrauding Medicaid of more than $580,000.

When Logan was interviewed in June 2016 about allegations that he was prescribing drugs to employees and keeping them for his own use, he said he “would never do that,” according to a Vermont State Police affidavit from Detective Sgt. Thomas Mozzer. After Logan was shown a prescription profile he’d written for an office manager, he admitted he’d relapsed with his addiction recovery and (the office manager’s) prescriptions for narcotics and Diazepam ‘are all a reflection of a relapse on my part.’

He said: ‘I’m guilty of that. I’m guilty of manipulating them,'” Mozzer wrote in his affidavit.

The Rutland Herald reports (http://bit.ly/2uMBQ0D ) Logan was charged with two felony counts of obtaining a regulated drug by fraud, one felony count of uttering a false prescription and six felony counts of Medicaid fraud.

Logan bought Green Mountain Family Medicine in 2008 and was well known in the community because part of the practice focused on providing suboxone, a medication used to treat opioid dependence, and other treatment for addiction.

Logan’s lawyer, Kevin Henry, said after the arraignment: “We’re disappointed the state decided to pursue these charges.”

Logan voluntarily surrendered his license to practice medicine in Vermont in June 2016.

He was released without bail Monday.