Annette Katz didn’t expect to be part of a major social movement. She didn’t set out to take on a major health organization. But that all began to change when a co-worker saw her fighting back tears and joined Katz to report to her union what amounted to a criminal sexual offense at a Cleveland Veterans Affairs Medical Center in 2012 and 2013.

Four years later, Katz, a licensed practical nurse at the hospital, testified in a deposition that a male nursing assistant had shoved her into a linen closet and groped her and subjected her to an onslaught of lewd comments.

In speaking out and taking legal action, Katz joined a growing group of women who are combating sexual harassment in the medical field at every level, from patients’ bedsides to the executive boardroom.

Much as the #MeToo moment has raised awareness of sexual harassment in business, politics, media and Hollywood, it is prompting women in medicine to take on a system where workers have traditionally been discouraged from making waves and where hierarchies are ­ever-present and all-commanding. While the health-care field overall has far more women than men, in many stations of power the top of the pyramid is overwhelmingly male, with women occupying the vast base.

In a recent survey, 30 percent of women on medical faculties reported experiencing sexual harassment at work within the past two years, said radiation oncologist Reshma Jagsi, who conducted the poll. That share is comparable to results in other sectors and, as elsewhere, in medicine it had been mostly taboo to discuss before last year.

“We know harassment is more common in fields where there are strong power differentials,” said Jagsi, who is director of the Center for Bioethics and Social Sciences in Medicine at the University of Michigan. “And we know medicine is very hierarchical.”

Workers in the health care and social assistance field reported 4,738 cases of sexual harassment from 2005 through 2015, eclipsed only by fields such as hospitality and manufacturing, where men make up a greater proportion of the workforce, data gathered by the Equal Employment Opportunity Commission shows.

A Kaiser Health News review of dozens of legal cases involving health-care workers across the United States shows patterns similar to those found in harassment cases that have cropped up in other fields: The alleged harassers are typically male, and they typically supervise or outrank the workers lodging the complaints. There are slaps on the butt, lewd comments and requests for sex. When superiors are confronted with reports of bad behavior, the complainants, mostly women, are disbelieved, demoted or fired.

But recently, many physicians have taken to Twitter using the #MeTooMedicine tag, sharing anecdotes and linking to blogs that chronicle powerful male doctors harassing them or disrobing at professional conferences.

Women who work in cardiology recently told the trade publication TCTMD that they felt the problem was particularly widespread in their specialty, where women account for 14 percent of the physicians.

A Los Angeles anesthesiologist made waves in a blog post urging “prettier” women to adopt a “professional-looking, even severe, hair style” to be taken seriously and to consider self-defense classes.

Among those speaking out is Jennifer Gunter, a San Francisco obstetrician-gynecologist, who recently wrote a blog post about being groped in 2014 by a ­prominent colleague at a medical ­conference, even naming him. “I think nothing will change unless people are able to name people and institutions are held accountable,” she said in an interview. “I don’t think without massive public discourse and exposure that things will change.”

Lawsuits, many settled or still making their way through the courts, describe similar encounters:

A Florida nurse claimed that in 2014, a surgeon made lewd comments about her breasts, asking her in a room full of people if he should “refer to her as ‘JJ’ or ‘Jugs,’ ” the nurse’s lawsuit says. The nurse said she “responded that she wished to be called by her name.”

A phlebotomist in New York alleged in another lawsuit that a doctor in her medical practice gave her a box of Valentine’s Day candy and moved in for an unwanted kiss on the mouth.

A Florida medical resident alleged that a supervising doctor told her she looked like a “slutty whore.”

A Nebraska nurse alleged that a doctor she traveled with to a professional conference offered to buy her a bikini if he could see her in it, and an extra night in a hotel if they could share the room. She declined.

A Pennsylvania nurse described the unsatisfying response she got after reporting that a colleague had pressed his pelvis against her and flipped through her phone for “naked pictures.” A supervisor to whom she reported the conduct, she charged, expressed exasperation, saying, “I can’t deal with this” and “What do you want?” After her request to be transferred to another location was denied, the nurse, who said she suffered from severe anxiety as a result of the encounter, quit her job.

Kayla Behbahani, chief psychiatry resident at University of Massachusetts Memorial Medical Center in Worcester, did not file a lawsuit but recently wrote about sexual harassment by a subordinate. In an interview, she said her instincts were to pity the man and also to follow a dictate that’s drilled into medical ­students: Don’t make waves. So she disclosed the harassment only after another woman’s ­complaint launched an investigation.

“As a professional, I come from a culture where you go with the flow,” Behbahani said. “You deal with what you’re dealt. In that regard, it was a dilemma for me.”

Katz, the Veterans Affairs nurse in Cleveland, initially didn’t complain about the harassment. A single mother with two children, she needed her job. Her attacker, MD Garrett, was also a nursing assistant but had more seniority, was a veteran and was friends with her boss. “I really did feel that I would lose my job,” Katz said in an interview. “I would be that troublemaker.”

But as the abuse accelerated, she went to the VA inspector general and the police.

Five times, she estimated, Garrett pushed her into a closet, where he would ask for sex. She would “tell him ‘no’ and fight my way out of [his] grip,” her statement said. He also shoved her into an unconscious patient’s bathroom and would “try to restrain me, but I eventually could break free.”

After one such assault, a colleague noticed tears in Katz’s eyes. The co-worker shared with Katz that she, too, had been a target of Garrett’s lewd behavior.

Katz and the colleague filed complaints in March 2013 with their union, the police and with their managers.That July, Garrett was indicted and later pleaded guilty to three counts of sexual imposition and one count of unlawful restraint. He was also dismissed from his job.

Reached by phone, Garrett said he agreed to the plea because he was facing multiple felony charges and didn’t know what a jury would do. He said that even though he pleaded guilty to four misdemeanors, he did not commit the crimes of which he was accused. “There was no harassment; she and I were friends,” he said.

In 2013, Katz sued the VA, alleging that it had failed to protect her from harassment and retaliated against her by refusing to give her a transfer before firing her for not showing up to work.

The VA lawyers argued that the department had no direct knowledge of harassing behavior before Katz came forward and that once it was informed, immediate action was taken. Veterans Affairs Deputy Press Secretary Lydia Blaha said in an email that anyone engaged in sexual harassment is swiftly held accountable.

The VA agreed in February to pay $161,500 to settle Katz’s lawsuit. Katz said it was costly and emotionally taxing to press on with her legal case but hopes it helps other women see that seeking justice is worthwhile. “I do think there are a lot of women who just suffer in silence,” she said.

Gunter, the San Francisco physician-blogger, said that change will come only when people who are more established across all professions stand up for those who are more junior. “Speaking quietly, going to HR — if that worked, we wouldn’t be here,” she said.

It’s ironic, she said, that as a gynecologist she is trained to believe patients’ claims about sexual assault. In the workplace, though, it’s well known that raising such matters can backfire. She added: “Physicians should be setting a standard on this.”

Jewett is a reporter for Kaiser Health News, a nonprofit news service covering health issues that is not affiliated with Kaiser Permanente.