It took a Brooklyn jury about three hours to convict a Long Island doctor of billing Medicare more than $25 million for procedures he never actually performed.

Syed Ahmed, 51, was found guilty on all six counts against him Thursday night in Brooklyn federal court.

During the three-week trial, prosecutors said that Ahmed billed for as many as five bogus surgeries a day on the same patient. In all, he pocketed $3 million in Medicare reimbursements from 2011 to 2013.

The disgraced doctor faces up to 45 years behind bars.

His attorneys didn’t return messages.