Regarded as the father of psychoanalysis, Sigmund Freud was a neurologist. Despite suffering criticism, psychoanalysis remains influential in the fields of psychology and psychiatry; such is the influence Freud has on humanities. Scholars believe that Freud is one of the most influential personalities of the 20th century and that his impact is comparable to that of Marxism and Darwinism.
Widely regarded as the father of analytical psychology, Carl Jung is one of the most important contributors to symbolization and dream analysis. The concepts of socionics and a popular psychometric instrument called Myers-Briggs Type Indicator (MBTI) were developed from Jung's theory. Apart from working as a psychiatrist and psychoanalyst, Carl Jung was also an artist, craftsman, builder, and prolific writer.
If the world is successful in its fight against polio, the credit goes to American virologist Jonas Salk who developed a vaccine for the disease. Described as a “miracle worker”, his concerns for humanity were reflected in the fact that he did not claim a patent for the vaccine. He founded the Salk Institute for Biological Studies, based in California.
James Watson is a geneticist, molecular biologist, and zoologist. He is credited with co-authoring the academic paper that propounded the double helix structure of nucleic acids such as DNA for which he was awarded the Nobel Prize in 1962. In 1977, he was honored with the Presidential Medal of Freedom. In 1997, he was awarded the National Medal of Science.
Nobel Prize-winning British biophysicist Francis Crick is best known for his ground-breaking work to determine the structure of the DNA, along with James Watson, Maurice Wilkins, and Rosalind Franklin. He taught at various institutes, such as the Salk Institute, and was also awarded the Order of Merit.
Born into a middle-class African-American family, Charles R. Drew initially excelled in football and track and field, and ended up earning athletic scholarships to fund his studies. He grew up to be a renowned surgeon and revolutionized the storage of blood plasma in blood banks.
10 Ben Carson
Neurosurgeon Ben Carson is credited with many pioneering neurosurgical procedures. He became a Library of Congress “Living Legend” and received the Presidential Medal of Freedom. He later contested in the 2016 presidential primaries, has authored numerous books, was a Secretary of Housing and Urban Development, and earned 60 honorary doctorates.
Known as Angel of Death, Dr. Josef Mengele was the chief doctor of Auschwitz concentration camp and was responsible for killing thousands of Jews as well as torturing the prisoners mercilessly and conducting inhuman experiments on them. These included injecting them with chemicals and stitching twin children together. Despite his horrible crimes, the infamous Nazi doctor could never be captured.
American paediatrician Benjamin Spock was the first paediatrician who studied psychoanalysis to comprehend needs of children and family dynamics. He penned Baby and Child Care, a best-seller book of the twentieth-century. His concepts of child-rearing influenced generations of parents. Spock was also an Olympic gold-medallist in rowing and ran during the 1972 United States presidential election as People's Party nominee.
13 Bennet Omalu
Nigerian-American physician, forensic-pathologist and neuropathologist Bennet Omalu is most-noted for discovering chronic traumatic encephalopathy (CTE) in American football players. He was serving at Allegheny County coroner's office in Pittsburgh at that time. He presently serves as President and Medical Director of Bennet Omalu Pathology, chief medical examiner for San Joaquin County, and as professor at the University of California, Davis.
14 Ron Paul
Ron Paul is a physician, author, and retired politician who has played an important role in promoting libertarian vision by delivering speeches on American college campuses. A doctor by profession, Ron Paul served in the U.S. Air Force as a flight surgeon from 1963 to 1968. His life and career inspired the 2012 film Ron Paul Uprising.
Vivien Theodore Thomas was laboratory supervisor who never went to college; yet he rose above poverty and racism to develop a procedure for treating cyanotic heart disease. Initially billed as janitor, he began his career as assistant to surgeon Alfred Blalock first at Nashville University and later at Johns Hopkins, and in time discovered the life-saving technique, eventually becoming a teacher of operative techniques.
16 Sanjay Gupta
Born to Indian-origin parents in the U.S., Sanjay Gupta is an acclaimed neurosurgeon and medical writer. He has also had a successful stint as a medical reporter for CNN, covering medical issues at wars and disasters. He has played himself in the movie Contagion and is a skilled accordion player.
17 Patch Adams
Patch Adams is an American physician, clown, comedian, author, and social activist. Credited with founding the Gesundheit! Institute, Adams advocates an alternative health care model. He also organizes volunteers who travel to various countries every year in order to bring a smile to the faces of patients, orphans, and other people.
Nobel Prize-winning Australian physician Barry Marshall, along with his colleague Robin Warren, proved that gastric ulcers were caused by the bacteria Helicobacter pylori and not by spicy food and other causes as previously believed. Their research made it possible to cure such ulcers by treating the bacteria with antibiotics.
Jack Kevorkian was a pathologist who believed that euthanasia or mercy killing of terminally ill patients was necessary. He later claimed to have helped 130 patients die and earned the nickname “Dr. Death.” He was later convicted of murder for his role in the voluntary euthanasia of a patient.
20 Mae Jemison
Former NASA astronaut Mae Jemison became the first Black woman to fly into space, as a mission specialist on the Space Shuttle Endeavour. A qualified physician, she has served as a Peace Corps doctor, too. She has written several books and established a non-profit and a tech research organization.
21 Jean Piaget
Johns Hopkins Hospital co-founder William Osler was also an avid historian. He redefined medical education with his emphasis on clinical experience and his book The Principles and Practice of Medicine. Born to a missionary father in Canada, he was to follow in his father’s footsteps but decided to study medicine instead.
Austrian psychiatrist Viktor Frankl founded logotherapy. He also authored several books, most notably his bestselling autobiographical depiction of his ordeal at various Nazi concentration camps, Man's Search for Meaning. He had lost his parents, brother, and wife in the Holocaust. He later won honors such as the Oskar Pfister Award.
Best known for her pathbreaking bestseller On Death and Dying, Swiss-American psychiatrist Elisabeth Kübler-Ross also made pioneering research in areas such as near-death studies. Her five stages of grief, or the Kübler-Ross model, has been adopted by corporates to help employees deal with loss and change.
Best known for his Pulitzer Prize-winning column in The Washington Post, Fox News commentator and political expert Charles Krauthammer was also a qualified psychiatrist. He was rendered paralyzed from the waist down at 22, after an accident while studying medicine at Harvard, but completed his degree nevertheless.
27 Jill Stein
28 Hasnat Khan
Better known as former lover of Princess Diana, British-Pakistani cardiac surgeon Hasnat Khan was once described by the late princess as “Mr Wonderful.” He had first met Diana at the Royal Brompton Hospital, where the princess had gone to visit a friend. Hasnat is a distant relative of Imran Khan.
29 Paul Nassif
American plastic surgeon and television personality Paul Sabin Nassif is best known for specialising in rhinoplasty and for co-hosting the plastic surgery-themed American reality television series Botched and its spin-off series Botched by Nature with another plastic surgeon Terry Dubrow. Nassif owns the skincare line Nassif MD Dermaceuticals and is a member of the American Society for Aesthetic Plastic Surgery.
Former physician Andrew Wakefield had his name removed from the medical register due to his association with a fraudulent 1998 study that claimed there was a link between autism and the vaccine for measles, mumps, and rubella. An anti-vaccination activist, he also taught at the Royal Free and University College.
31 Sam Sheppard
Sam Sheppard went from being a popular doctor at the Bay View Hospital to a murder suspect. After spending a decade behind bars, convicted of bludgeoning his wife, Marilyn Reese, to death in their bedroom and sentenced to life, he was eventually acquitted due to a lack of sufficient evidence.
Albert Schweitzer was an Alsatian polymath who won the Nobel Peace Prize in 1952 for his philosophical work, Reverence for Life. He is credited with founding the Albert Schweitzer Hospital, which was a direct result of his philosophical expression. Schweitzer is also credited with influencing the Organ reform movement, which began in the mid-20th-century.
Russell M. Nelson is an American religious leader and the current president of the Mormon Church. A former surgeon, Nelson is credited with co-developing the heart-lung machine, which was used in the first-ever open-heart surgery. He became a respected heart surgeon and went on to serve as the president of the Utah Medical Association before becoming a religious leader.
35 Frantz Fanon
Frantz Fanon was a French-West Indian born in Martinique, a former French colony. A skilled psychiatrist and physician, he realized the impact of colonialism on the human mind while treating French soldiers and Algerians. The author of books such as The Wretched of the Earth, Fanon supported the Algerian independence movement.
37 Connie Booth
François Duvalier was a Haitian politician. From 1957 to 1971, he served as the president of Haiti. Over the course of his political career, Duvalier's regime became despotic and totalitarian. In 1964, Duvalier declared himself President for Life and remained in power until his death. Since his demise, several books have been written about his rule in Haiti.
40 Osamu Tezuka
Osamu Tezuka was a Japanese manga artist, cartoonist, animator, and film director. He revolutionized the manga genre in Japan and was lovingly called "the Godfather of Manga". A prolific artist, he created works for both children and adult-oriented projects. He was the recipient of several awards, including the Winsor McCay Award and the Japan Cartoonists Association Award.
British middle-distance athlete and neurologist Sir Roger Gilbert Bannister was the first athlete to run a mile in less than four minutes. Before achieving such feat, Bannister set a British record in the 1500 metres during the 1952 Summer Olympics. In the medical field, Bannister became a neurologist and Master of Pembroke College, Oxford.
44 John Money
45 Harry Hill
Noted comedian and You've Been Framed! star Harry Hill is a trained neurosurgeon who quit his medical career to step into the world of entertainment. The Perrier Award-winning performer has soared to fame with the radio series Harry Hill's Fruit Corner and the ITV show Harry Hill's TV Burp.
47 Erich Fromm
Erich Fromm was a German social psychologist, psychoanalyst, sociologist, and socialist. A German Jew, he fled the Nazi regime and settled in the United States. He was a co-founder of The William Alanson White Institute and was associated with the Frankfurt School of critical theory. He is best remembered for authoring the book Escape from Freedom.
48 Li Wenliang
Born in New Zealand, to a doctor father from Dublin, Maurice grew up to be a Nobel Prize-winning biophysicist. His X-ray diffraction studies of DNA helped James D. Watson and Francis Crick, his fellow Nobel laureates, ascertain the DNA structure. He was also part of the Manhattan Project.