Valbona Yzeiraj had two identities, police say.

Most days, she was a personable office manager at a dental practice in the Bronx.

But when her boss was away on business, the 45-year-old Albanian native donned a white lab coat and transformed into a licensed dentist known as “Dr. Val,” according to the New York Daily News.

“She diagnosed patients, she took X-rays, she injected patients with anesthetics, and she performed root canals,” Bronx Assistant District Attorney Patrick McCadden said in court Thursday, according to CBS News.

Yzeiraj scheduled her own appointments and even offered discounts for customers willing to pay cash, CBS reported.

Prosecutors say the charade lasted from November 2012 to August 2013, according to CBS. It might have lasted longer, but for the poor quality of the office manager’s work.

Her boss, Jeffrey Schoengold, grew suspicious when patients returned to his practice complaining about botched procedures that he’d never performed, according to CBS. One patient, the Daily News reported, suffered from an infection from a root canal and another complained of severe pain two years after Yzeiraj’s procedure.

Prosecutors say that when Schoengold fired Yzeiraj, she even attempted to steal money from the practice, according to CBS.

“This is a gross betrayal of trust to me and to the community,” Schoengold, 61, told the Daily News, noting that he hired Yzeiraj using Craigslist in 2009.

“You hear about things like this,” he added. “You never think it’s gonna happen to you and here I am and it’s happening.”

Yzeiraj claimed she’d had dental training in Albania, but authorities say they have no evidence she’s received any training in the United States, according to the Daily News.

McCadden told UPI that Yzeiraj “preyed on the ‘vulnerabilities’ of the Albanian community by targeting them as patients.”

Yzeiraj has been charged with assault, reckless endangerment and attempted grand larceny and faces up to seven years in prison, according to CBS.

She pleaded not guilty. Bail was set at $20,000 bond or $10,000 cash.

“My client has spoken in court loud and clear,” defense attorney Corey Sokoler said. “She is not guilty, she intends to fight each and every one of these charges.”