Graduating from Northwestern University in 1888 with an M.D., Charles Horace Mayo joined his father, William Worrall Mayo, and older brother, William James Mayo, to establish a private medical practice in Rochester, Minnesota. This collaborative effort eventually evolved into the Mayo Clinic, a globally recognized institution that pioneered the integrated group practice model for medical treatment and research.
Medical Career and Specialization
After completing postgraduate studies at the New York Polyclinic Medical School, Mayo focused his surgical expertise on the nervous system and the thyroid. He managed the clinic's ophthalmic patients until 1908. A core aspect of the practice's early surgical success involved a strict commitment to sterile conditions within the operating room, a practice enforced by Mayo and his early partners.
Twenty questions, eight minutes on the clock, and a percentile measured against everyone who has taken it. No sign-up.
Take the IQ test →Institutional Growth and Organization
The private practice expanded through the inclusion of partners such as Augustus Stinchfield, Christopher Graham, Edward Star Judd Jr., Henry Stanley Plummer, Melvin Millet, and Donald Balfour. In 1919, this group transformed the entity into the not-for-profit Mayo Clinic. This reorganization established the Mayo Properties Association, transitioning the original partners to salaried positions and institutionalizing the research-focused approach that eventually served one million patients during Mayo’s lifetime.
Professional and Military Service
Mayo held numerous leadership roles, including President of the American Medical Association (1917–1918) and President of the American College of Surgeons (1923–1925). His military service during World War I involved acting as a chief surgical consultant for the U.S. Army. Commissioned as a colonel in 1917, he was later promoted to brigadier general in the Officers' Reserve Corps in 1921. He also served as a professor of surgery at the University of Minnesota from 1919 until his retirement in 1936.
Personal Life and Final Years
In 1893, he married Edith Graham. The couple had two sons, Charles William Mayo and Joseph Graham Mayo, both of whom practiced at the clinic. Following his retirement in 1930, Mayo remained active in civic and social organizations, including the Freemasons and the Episcopal Church. He died of pneumonia in Chicago in 1939 and was interred at Oakwood Cemetery.
Fast facts
- Born: 1865, Rochester, Minnesota
- Died: 1939, Chicago, Illinois
- Medical Degree: Northwestern University, 1888
- President of the AMA: 1917-1918
- Military Rank: Brigadier General
- Burial Site: Oakwood Cemetery
- Spouse: Edith Graham
Questions readers ask
What was the significance of the Mayo Clinic's founding partners?
The seven partners, including Charles and William Mayo, created the world's first integrated group practice, moving away from solitary private work to a shared, salary-based research model.
What honors did Charles Horace Mayo receive?
His honors included the Army Distinguished Service Medal, being named an honorary Fellow of the Royal College of Surgeons, and receiving various decorations from the governments of France and Italy.
Achievements
- honorary Fellow of the Royal College of Surgeons — 1920
.jpg)