A former psychiatrist for the city’s hospital system claims she suffered retaliation for complaining that Mayor Bill de Blasio’s push to close Rikers Island “politicized” the mental-health evaluations of inmates.

In a $3 million whistleblower suit, Dr. Melissa Kaye says she was slapped with bogus disciplinary charges and demoted for warning “that inmates were potentially being released from jail in an expedited fashion and [in] circumvention of the procedures and law.”

Kaye, former medical director of the Bronx Forensic Psychiatry Court Clinic, alleges officials with the Health and Hospitals Corporation committed “ethical violations” and “malfeasance” in connection with exams used to determine if defendants are competent to stand trial. Those found incompetent are committed to the state Office of Mental Health for care.

Under de Blasio, “these examinations have become politicized . . . in an effort to get inmates off Rikers Island more quickly,” her Manhattan federal suit charges.

The misconduct allegedly included coercing mentally ill inmates into signing away their privacy rights “without their capacity to understand and without the input of defense counsel,” the suit says.

“You’re dealing with a blatant and cavalier disregard for the rights of the defendants,” said Kaye’s lawyer, Special Hagan.

The timing of Kaye’s alleged complaints between January and November 2018 coincided with a February 2018 announcement by HHC that it was “centralizing” oversight of the city’s four forensic psychiatric court clinics under its Correctional Health Services division, in order to “reduce the time that people stay in Rikers pending a psychiatric evaluation,” the head of the Mayor’s Office of Criminal Justice, Elizabeth Glazer, said.

HHC referred a request for comment to the city Law Department, where a spokesman said, “The accusations have no merit.”