Alleged serial rapist Dr. Derrick Todd was released on personal recognizance after pleading not guilty at his arraignment to 81 counts of sexual assault, including 21 of alleged rape.

The string of alleged assaults, the DA said, occurred during medical appointments with Todd in his practice with Brigham and Women’s and Faulkner Hospital in Boston between 2017 and 2023.

Todd was released Thursday on the conditions that he wear a GPS monitor, maintain a 5 p.m. curfew, and stay away from victims in the case.

The judge also indicated he was willing to allow Todd to travel to Connecticut, where he cares for his mother, according to his attorney.

During the arraignment, Todd’s attorney, Ingrid Martin, said she wanted to “remind the courtroom my client is innocent until proven guilty.”

She went on to list items off Todd’s resume and say that patients he’d seen for years, either as a rheumatologist or primary care physician, “never raised a complaint” until April 2023.

Martin also said the alleged assaults occurred during medical examinations, and that the prosecution will have to prove that Todd both went beyond the scope of what was medically necessary and did so with intent to assault the patients.

She also said that many of the victims in the case didn’t come forward until after the fall of 2023, when one of Todd’s patients went public with her allegations in a lawsuit, leading to “an avalanche of media attention.” Martin said that the coverage, along with advertising by plaintiffs’ lawyers about the class action, both precipitated the large number of patients coming forward.

According to a statement of the case filed by the Commonwealth, prosecutors plan to present evidence on the proper way to perform breast and pelvic exams to draw a comparison to Todd’s alleged improper behavior, which “went far beyond the standard and accepted methods… and into his own sexual gratification.”

In the statement, prosecutors describe several ways Todd assaulted patients, including digitally penetrating them for up to 10 or 15 minutes at a time and making lewd comments while he was doing so.

“The Commonwealth alleges, that the defendant steered some patients to his primary-care role as a greater opportunity to engage in and justify his sexual conduct,” the statement said. For example, he told a pregnant patient to cancel her post-birth gynecological follow-up, telling her he could take care of it.

He also frequently allegedly told patients he could save them money by performing pelvic therapies himself, even though he was not qualified to do so, the statement said.

Todd allegedly often communicated with patients via text message and didn’t record the pelvic and breast “exams” as a way to keep them out of the medical record. The messages, which ranged from sexual innuendo to “generally friendly,” the statement said, were also a way to “establish trust and rapport with these women.”

In one instance, he allegedly texted a patient about making an appointment, then seemed surprised when she showed up to the office. “Did I say anything inappropriate?” Todd asked her, admitting he was too drunk to remember the exchange, according to the statement.

When the indictment was announced Tuesday, Suffolk County District Attorney Kevin Hayden described the case as unprecedented.

“The allegations contained in these indictments outline serial sexual crimes that have little or no equivalent in the history of Suffolk County,” Hayden said. “The scale of victimization and the magnitude of trauma left in the wake of these allegations is something we have never encountered.”

The string of charges in Suffolk is just the latest development in the set of sprawling sexual allegations against Todd.

In March, the board-certified rheumatologist was charged in Middlesex County in connection with the alleged sexual assault of 11 victims treated at Charles River Medical Associates.

“The defendant is accused of conducting unnecessary and excessively prolonged pelvic and breast examinations, performing procedures for which he lacked appropriate training or certification and engaging in conduct that was outside the accepted standards of medical care,” according to the Middlesex DA. “In several instances, the alleged assaults occurred under the guise of legitimate medical treatment, including purported pelvic floor therapy, despite the defendant not being qualified to perform such therapy.”

The doctor also faces two more rape charges in connection with alleged incidents with two more victims that were also reported in Middlesex County in January.

Additionally, the class action lawsuit has more than 200 of Todd’s patients sign on, who say they were abused or assaulted during what were supposed to be exams.

“We take our duty to care for our patients and keep them safe extremely seriously,” Mass General Brigham said in a statement after the indictment. “We are deeply distressed to learn of the depth and breadth of harm reflected in these new indictments. We will continue to provide support and respond to our patients’ needs during this challenging time. We recognize the incredible courage it has taken for all patients who have come forward to ensure that this conduct was exposed.”

As a condition of bail, Todd was asked to stop practicing but had already voluntarily stopped working as a doctor in 2024.

Todd is due to return to court on June 8 for a pre-trial hearing.