Top 10 Most Evil Doctors, Nurses, and Healthcare Professionals

The medical field is typically associated with compassion, healing, and the preservation of life. Yet, as history grimly reminds us, even within this noble profession, darkness can fester. You might be surprised to learn that some of the most heinous crimes against humanity were perpetrated not by soldiers or dictators, but by individuals cloaked in white coats.

These are not the fictional monsters of horror films. They were real people who exploited their positions of trust to inflict unimaginable suffering.

1. Josef Mengele

   

   A German SS officer and physician during World War II, Josef Mengele conducted inhumane medical experiments on prisoners at Auschwitz concentration camp. His work, often without anesthesia, led to countless deaths and severe suffering, earning him the moniker "Angel of Death."

   Yeah, I don't think it gets any worse than this guy. Shame he was never truly brought to justice for his actions.

2. Shiro Ishii

   

   As a Japanese army microbiologist and the head of Unit 731 during World War II, Shiro Ishii oversaw gruesome biological warfare experiments on prisoners. His actions resulted in the deaths of thousands through diseases, vivisection, and other cruel practices.

3. Michael Swango

   

   An American physician and serial killer, Michael Swango poisoned numerous patients and colleagues throughout his medical career. His murders, often involving lethal injections, spanned multiple states and resulted in the deaths of at least 60 people.

4. Harold Shipman

   

   Harold Shipman was a British general practitioner who became one of the most prolific serial killers in history, with estimates of over 250 murders. He used lethal doses of drugs to kill his patients, many of whom were elderly women.

5. H. H. Holmes

   

   Often referred to as America's first serial killer, H. H. Holmes constructed a "Murder Castle" in Chicago, where he lured and killed numerous victims in the late 19th century. His methods included gassing, torture, and surgical dissection.

6. John Bodkin Adams

   

   A British physician suspected of killing over 160 of his patients between the 1940s and 1950s, John Bodkin Adams was accused of using overdoses of painkillers to hasten their deaths. Although acquitted of murder, his case raised serious concerns about medical ethics and euthanasia.

7. Carl Clauberg

   

   Carl Clauberg was a Nazi physician who conducted horrific sterilization experiments on women in concentration camps during World War II. His experiments caused immense pain and suffering, contributing to the larger atrocities of the Holocaust.

8. Arnfinn Nesset

   

   A Norwegian nurse and serial killer, Arnfinn Nesset was convicted of murdering 22 patients by administering lethal doses of muscle relaxants. His crimes, committed in the 1970s and 1980s, shocked the nation and led to a lengthy prison sentence.

9. Beverly Allitt

   

   Beverly Gail Allitt is an English serial killer who was convicted of murdering three infants and an 11-year-old boy, attempting to murder three others, and causing grievous bodily harm to a further six at Grantham and Kesteven Hospital, Lincolnshire, between February and April 1991. She committed the murders as a State Enrolled Nurse on the hospital's children's ward.

10. Ernst-Robert Grawitz

    

    Ernst-Robert Grawitz was a German physician and an SS functionary during the Nazi era. Grawitz funded Nazi programs involving experimentation on inmates in Nazi concentration camps and was part of the group in charge of the murder of mentally ill and physically disabled people in the Aktion T4 programme.

The Newcomers
11. ?

    Luc Jouret

    
12. ?

    Karl Gebhardt

    

    Karl Gebhardt was a German SS physician who served as Heinrich Himmler's personal doctor and as president of the German Red Cross during the Nazi era. He directed sulfonamide experiments on prisoners at Ravensbrück concentration camp, where subjects were deliberately wounded and infected to test treatments. Gebhardt was convicted in the Doctors' Trial for war crimes and crimes against humanity and was executed in 1948.

The Contenders

13. Walter Freeman

    

    An American neurologist, Walter Freeman was infamous for popularizing the lobotomy, a procedure that involved severing connections in the brain's prefrontal cortex. His operations left thousands of patients severely disabled, and many died as a result of his crude techniques.

14. Lucy Letby

    

    Lucy Letby is a British former nurse who was convicted in 2023 of murdering multiple infants under her care at the neonatal unit of the Countess of Chester Hospital. Her crimes, which shocked the nation, involved deliberately injecting air, insulin, or milk into the bloodstream of vulnerable babies.

15. Jack Kevorkian

    

    Known as "Dr. Death," Jack Kevorkian was an American pathologist who assisted terminally ill patients in committing suicide. His controversial actions sparked national debates on euthanasia and the right to die.

16. Henry Morgentaler

    

    A Polish-Canadian physician and abortion rights advocate, Henry Morgentaler performed thousands of abortions in Canada, often illegally, before the procedure was legalized. Though controversial, his work was instrumental in changing Canadian law and ensuring reproductive rights.

    He just died today at age 90. Meanwhile, his victims never even got to be born. So sad.

17. Robert Courtney

    

    An American pharmacist, Robert Courtney diluted chemotherapy drugs to increase his profits, potentially affecting thousands of cancer patients' treatments. His actions, driven by greed, resulted in reduced efficacy of life-saving medications and numerous deaths.

18. Charles Cullen

    

    A former nurse, Charles Cullen confessed to killing at least 40 patients, although some estimates suggest he may have been responsible for hundreds of deaths. He administered lethal doses of medication to his victims over a 16-year career in various hospitals.

19. Orville Lynn Majors

    

    Orville Lynn Majors was a licensed practical nurse who worked at Vermillion County Hospital in Clinton, Indiana. He was convicted in 1999 of murdering six patients under his care. Prosecutors alleged that he used injections of potassium chloride or epinephrine in cases connected to an unusual spike in patient deaths.

20. J. Marion Sims

    

    James Marion Sims was an American physician in the field of surgery. His most famous work was the development of a surgical technique for the repair of vesicovaginal fistulas, a severe complication of obstructed childbirth. He developed this technique via non-consensual and unanesthetized surgeries on enslaved Black women Anarcha Westcott, Lucy, and Betsey, as well as impoverished Irish women.

21. Larry Nassar

    

    Lawrence Gerard Nassar is an American convicted serial sex offender and former family medicine osteopathic physician. He served as a team doctor for the United States women's national gymnastics team from 1996 to 2014, where he used his position to exploit and sexually assault hundreds of young athletes as part of the largest sexual abuse scandal in sports history. Nassar was a team physician at Michigan State University under William Strampel from 1997 to 2016, and multiple student athletes reported his inappropriate behavior.

22. Brian Thompson (businessman)

    

    Brian Thompson was an American health insurance executive who served as chief executive officer of UnitedHealthcare until he was fatally shot in December 2024. He worked for UnitedHealth Group for many years before becoming CEO of the company's insurance division in 2021. UnitedHealthcare faced public scrutiny over claim denials and coverage practices during his tenure.

23. Anthony Fauci

    

    Anthony Fauci is an American physician and immunologist who served as director of the National Institute of Allergy and Infectious Diseases from 1984 to 2022. He advised multiple U.S. presidents on infectious disease policy, including during the HIV/AIDS epidemic and the COVID-19 pandemic. His public health recommendations during COVID-19 became the subject of political criticism, congressional questioning, and public debate.

24. Roger Abdelmassih

    

    Roger Abdelmassih was a Brazilian fertility doctor known for operating a prominent assisted reproduction clinic in São Paulo. He was convicted of sexually assaulting multiple patients who had sought fertility treatment. After fleeing Brazil, he was arrested in Paraguay and returned to serve his sentence.

25. Karl Brandt

    

    Karl Brandt was a German physician who served as Adolf Hitler's personal doctor and later became Reich Commissioner for Health and Sanitation. He was a leading figure in the Nazi euthanasia program, which involved the killing of disabled and mentally ill people. Brandt was convicted of war crimes and crimes against humanity at the Doctors' Trial and executed in 1948.

26. Ayman al-Zawahiri

    

    Ayman al-Zawahiri was an Egyptian physician who became a leader of Egyptian Islamic Jihad and later al-Qaeda. He was a close associate of Osama bin Laden and helped shape al-Qaeda's ideology and operations. The United States accused him of involvement in terrorist plots, including attacks on U.S. embassies in East Africa, and he was killed in a U.S. drone strike in 2022.

27. Christine Malevre

    

    Christine Malevre was a French nurse who worked at a hospital in Mantes-la-Jolie. She was convicted of killing several terminally ill patients under her care. Her case raised public debate in France over euthanasia, patient consent, and criminal responsibility in medical settings.