dr. zachary press was supposed to be in district court to answer those charges. we've got some questions for him, too joce sterman is in northwest baltimore to explain. >> reporter: dr. press is not only in trouble because of those charges, but he's also on the radar of the federal government. they consider him a dead beat because he has not paid back hundreds of thousands of dollars in loans. tonight at 11, an abc2 news investigation. we'll tell you about press and hundreds of other dentists and doctors like him. they were in the paid back from the program. tonight we'll let you know which maryland docs have defaulted and how much of your tax money is still on their tab. we'll tell you what happened when we dropped into his office and found him behind the counter. are you seeing patients? not at the moment. you're here? >> cleaning up and closing up. >> reporter: but your license was in the renewed a while ago. dr. . press did not show up here in district court. his attorney told the judge he did not know where he was or why he did in the show up. the judge wante

dr. zachary press has been hit with a $4500 fine for having two radiation machines. he has not had a valid dental license since 2009. >> and he's not the only one that's done this. >> absolutely not guilty. he's one of hundreds of -- absolutely not. he's one of hundreds not paying for student loans funded by your tax dollars. >> hi, we're channel 2, looking for dr. press. are you dr. press by chance. >> yes, i am. >> reporter: you're watching the magic act of zachary press. he may want to disappear from the camera, but no hiding from the past. >> are you seeing patients. >> reporter: not at the moment. >> you're just here. >> cleaning up and closing up. >> reporter: but your license was not renewed a while ago. and by a while we mean four years ago. records show his dental license was not renewed by the state board of dentistry since 2009 and we found him behind the counter wearing scrubs and while the signs around the office call him a dentist, the feds call him something different, a dead beat. >> it's a small percentage of debtors who are unwilling to pay and unco