Marsh was BBH's program director in early 2006, according to a letter to state health officials. In 2001 Georgia's medical board suspended his license, then put him on probation, after his sixth drunken-driving episode, according to the Maryland board. In 2004 he moved to Maryland and began rehabilitation under a program for addicted physicians.

In July 2006, Marsh received a medical license in Maryland with a probationary period of at least five years, board records show. One condition required him to be drug-tested. In spring 2009, while working on the Eastern Shore, he tested positive for alcohol, board documents say. In June of this year the board revoked his license.

Sheldon, a psychiatrist, resigned from a geriatric center in 2002, according to board records, amid concerns about her "physical and mental condition." In an interview Monday with The Sun, she said she had been using opiates at the time. She had agreed to a five-year "advocacy contract" with a rehab program and in 2004 signed a pact with the physicians board that required drug screens.

Sheldon began volunteering at BBH in 2005 and months later began working part-time. In July 2007, three months after leaving BBH to care for her ailing mother, she tested positive for an unauthorized pain medication — which board records say she reported taking for an ankle injury. She rejoined BBH as a part-time physician in September 2007.

In late 2008, she tested positive for alcohol, and board records say she admitted drinking wine on two nights. She told the board that she realized the episode was "an emergency in my recovery." The board reprimanded her and put her on five-year probation, which requires that she attend outpatient treatment and Alcoholics Anonymous meetings.

"Since then, my recovery has been so much better than it ever was," Sheldon said Monday. But she said she felt the board unfairly imposed the five-year probation, which will keep her from becoming board-certified in psychiatry, thus limiting her career options.

The Sun recently learned about Ostrovsky's employment at BBH from former employees.

He admitted billing for thousands of bogus 45-minute therapy sessions. His scheme was discovered because of suspicious billing patterns. He billed for more than eight hours of daily therapy on 293 occasions, according to then-state Attorney General J. Joseph Curran Jr., and once for 19 hours of therapy in a single day.

Baltimore County Circuit Judge John G. Turnbull II sentenced him in 2006 to five years in jail, with all but a year suspended. He ordered Ostrovsky to a year of home confinement. Ostrovsky paid a $250,000 fine at sentencing and was ordered to pay $150,000 over the next two years.

In revoking his license, the Board of Physicians cited his guilty plea to a crime of moral turpitude.

The inspector general is wrapping up its investigation into Ostrovsky's employment, Paulson said.

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